Management Accounting - Decision-relevant Management Accounting

Complete Variance Analysis

Planned to actual comparison in stepwise Contribution Margin Accounting shows where corrective measures must be taken first.

Complete Variance Analysis

The step-by-step contribution margin accounting, also called sales performance accounting, allows for a complete variance analysis. All variances from plan are to be identified and analyzed to derive corrective measures or new plans.

In the report for year 20XX of Ringbook Ltd. it can be seen that

- Gross sales grew mainly due to increased sales in the merchandise product range (+36.9%). In both assortments, somewhat higher sales deductions were granted in order to realize the sales. As a result, CMI I as a % of net sales for merchandise fell by 3.36%. Overall, the absolute CM I increased by 105,810 (see yellow fields).
- Sales promotion costs (fixed costs of the product groups) are clearly attributable to assortments but not to individual product groups. They did not deviate significantly from plan. The cost centers sales management and sales territories show minor spending variances in their cost centers. Since the sales organization works for all products, its fixed costs can only be allocated to the company as a whole (see grey fields).
- The purchase price variances (line 2, red fields) could be assigned to the two assortments because all raw materials and supplies are consumed for the company’s own products. The price changes of the suppliers of the merchandising goods appear in the corresponding assortment.
- Production order related variances can be collected for each production order. Here, the summarized values per variance type are presented for the responsible production management. These variances refer only to semi-finished and finished products manufactured in-house. Therefore, they are shown in the column for the goods manufactured by the company (light blue fields).
- The spending variances (target costs – actual costs) remain. These arise in each cost center per cost-type. In the stepwise contribution margin accounting, they are shown by cost center or summarized by functional area (dark blue fields for production and light green for other cost centers). Favorable spending variances increase the EBIT. They are the expression of the fact that fewer actual costs were incurred than target costs during the period under review. This corresponds to a productivity gain relative to plan.

This company-specific design of the step-by-step contribution margin accounting shows which individual areas of responsibility contributed to what extent to the improvement in EBIT of 93,316.

Purchase Price Variances are topical again

Show purchase price variances in financial accounting per period and in management accounting per product.

As a result of the Corona pandemic and supply chain challenges, increasing inflation rates can be observed worldwide. As a result, the questions of how quickly and comprehensively rising costs can be passed on to customers and what consequences can be expected for the company’s own results are coming to the fore.

To determine the extent to which price variances in purchasing could be passed on to customers and whether price increases are leading to increased spending variances in the cost centers, it is necessary to record purchase price variances in management accounting for short-term planning and control.

In the example below, the real price development for the purchase and consumption of sectional steel is the starting point for determining the company’s own material acquisition costs. Data origin: cf. https://www.d-a.ch/da/da-home/services/dienstleistungen/preisentwicklungen/stahl-metalle/kbob/kbob-preisindizes-baugewerbe.pdf) .

Purchaseprices sectional steel — Purchase prices sectional steel

Row 7 of the table shows the monthly purchase price variances based on the standard price of EUR 120.- per ton.

- These variances should be recorded as part of the monthly cost of materials in financial accounting, since the purchase price variance arose in this period.
- In management accounting, however, the planned standard purchase price should be used throughout the whole year, since otherwise production would have to create a new standard cost calculation every month, which would be too late for sales, since new price increases have already occurred in the meantime.
- The purchasing manager should include the expected average inflation when setting the standard purchase price for the plan year. Since he is not a prophet, he can only estimate the price. This estimate goes into the planned product costing and consequently is also applied in the planned contribution margin calculation. The advantage of this is that the standard cost estimate remains the yardstick and the monthly variances can be calculated automatically.
- Stock receipts of semi-finished and finished products are also consistently valued in Management Accounting at proportional standard manufacturing costs, which in turn facilitates the preparation of contribution margin accounting.

This approach also makes sense because raw materials from deliveries with different real purchase prices can be consumed in the same production order. The table highlights consumption and costs:

- Order 1 (row 8) consumes in January the 100 tons of sectional steel purchased in December of the previous year at a price of 100.00/ton, plus 20 tons from the January delivery at a price of 117.30 (row 3 in the price development table).
- Due to its volume of 320 tons the production of order 4 (row 11) has to be distributed over the months March to May. Because 100 tons are purchased each month and charged by the supplier at the applicable price, 3 different purchase prices would also have to be used for the calculation.
- If the smaller order 5 (row 12) were processed before order 4 in early March, it could still benefit from the more favorable purchase price in February of 134.20 per ton at the expense of order 4, but this would increase the cost of order 4.

This complexity of evaluating order-specific consumption cannot be expected of neither the production managers nor the salespeople. In addition, as can be seen from rows 16 – 18, the valuation rule to be applied would still have to be determined:

1. All purchases are valued at the standard purchase price throughout the year (row 16).
2. The real withdrawals from the warehouse are valued at the current purchase price of the month of purchase (Last-In-First-Out, row 17).
3. The real purchases are valued at the weighted average purchase price of the current inventory (weighted average purchase price, row 18).

It can be seen that price variances in purchasing are period costs. They can only be clearly allocated to a product if the material was purchased directly for a specific production order.

As a result, especially in inflationary times, order and product costing should be carried out using standard purchase prices. Otherwise, those responsible for production will lose their orientation with the use of rapidly changing prices. In addition, they are held responsible for variances for which they are not responsible.

As mentioned, purchase price variances are period costs. In stepwise contribution accounting they can usually not be clearly assigned to a specific sale. Consequently, they are to be reported where unambiguity is given, e.g. per product or customer group or, as in the example, the assortments (cf. Management Control with Integrated Planning, p. 231).

Management Tasks and Management Accounting

Corner stones for the implementation of the decision-relevant Management Accounting System covering revenue, activities, capacities, cost and earnings.

Management Tasks and Management Accounting

The design of the management accounting system outlined in this blog and in the book “Management Control with Integrated Planning” is based on generally accepted management principles and the resulting behaviors.

Decision support and responsibility for results

All managers make decisions and are responsible for their implementation. This applies to all individuals who manage an area and are accountable for its results to their superiors or to the company. Managers of all levels are thus the main customers of the management accounting system. Consequently, such systems must be structured to provide decision support to all managers at all management levels and to delineate responsibilities in a manner that is appropriate to the organization.

To fulfill its purpose, results must be achieved by a company. Objectives are results to be achieved. Each manager should be able to plan, measure and control the achievement of his objectives in accordance with his responsibilities.

As far as monetary targets are concerned, they are to be described in the management accounting system. From this it can be deduced that planning in management accounting should run in parallel with the process of agreeing on objectives. If, for example, the activity quantity of a cost center is determined as a target, but the headcount required for this objective is not approved, it cannot be achieved.

Objectives and plans belong together

When planning, it is necessary to make and prepare the decisions regarding personnel, material and financial resources required to meet the strategic and the operational goals. Since this process is time-consuming, ways are often sought to simplify and shorten the planning process. Despite the large amount of work involved, however, practice shows that it is worthwhile to plan all areas, products and management levels once a year in terms of performance and value and in conjunction with the objectives of an area. This provides the benchmark for the plan to target and plan to actual comparison and thus the basis for determining corrective actions. Planning for a fiscal year also proves useful in “short-lived” times, because personnel and management decisions as well as objectives are usually also agreed for a fiscal year.

The management cycle requires plan, target and actual data

In order for the management cycle to work properly the plans that are created together with the objectives must be stored in the system in all their detail, so that they can be compared with the results achieved. The comparison of planned, target and actual data makes it possible to also measure the actual extent of achievement of the objectives in monetary values. It is recommended to prepare the plan to actual comparison on a monthly basis, so that the real events are still present for the evaluation of the results. It also enables faster reaction in the case of unfavorable variances. For projects, the plan to actual comparison should also be set up for each milestone, because at each milestone meeting a decision has to be made as to whether the project should be continued or terminated (a go/no-go decision).

Managers at all levels usually decide on quantities, activities and times. The value consequences of implementation then become known in cost accounting. This requires that the management accounting system be designed as a cost-, activity-, revenue- and earnings system (CARE). Management-oriented CARE is therefore clearly distinguished from purely money-based financial accounting.

Requirements from strategic and medium-term planning

Strategic planning defines the intended positioning in the markets. For this purpose, product/market positions to be achieved are specified with quantities and revenues for several years.

Medium-term operational planning has the task of preparing the implementation of the strategies. Since the managers must record quantities, services and prices for this purpose, the CARE structures must also be set up in the multi-year planning.

In annual planning, the planned purchase prices, the planned personnel costs, and the bills of materials as well as the work plans for the planned year are set. This results in new planned cost center rates and new planned product costs.

Adjustments at the beginning of the new year

To enable managers to compare their achieved results with the planned values at any time during the year, the inventories of materials, semi-finished and finished products in CARE must be revalued using the new approach at the beginning of the next year.

If, for example, a product can be manufactured at a lower cost in the new year due to a process improvement, the previous year’s ending inventory must be revalued internally with the new cost rates. If this revaluation of the year-end inventory is not carried out, variances will occur in the new year which still belong to the old year. This revaluation is only carried out in management accounting and can be automated. Inventory valuation for financial accounting continues to follow the applicable commercial law regulations.

Forecasts

Because the preparation of forecasts ties up a lot of management capacity, it is advisable to schedule two forecast dates. When the fiscal year corresponds to the annual calendar, the first forecast should be prepared on the basis of the planned and actual data from January to April (Easter days are then always included). Based on the accumulated actual values as of the end of August (major vacation period mostly completed), the second forecast should be prepared. This forecast also serves as the input for the subsequent planning of the next business year. Stock-listed companies are usually forced to prepare quarterly forecasts. However, practice shows that especially forecasts based on the actual data as of the end of March is not very meaningful, and its preparation usually causes a lot of hectic activity in the organizations.

Controllers check the right system application

As designers and operators of the management accounting system, controllers have the task of monitoring the correct application of the planning and controlling system. This results from the controller mission statement (see Management, Controlling, Controller). Once the planning results or forecast data have been entered into the management accounting system, a sufficient period of time must be provided during which the controllers can check compliance with the system rules and, if necessary, ensure that corrections are made on time. Unfortunately, there are always “specialists” who try to abuse the planning system or valuation rules in their favor by circumventing content-related or process-related rules:

- In a company known to us, a business unit manager massively manipulated the planned net attendance times of the employees in order to be able to calculate lower unit costs in the plant he wanted to erect. On this basis, the investment in the plant was approved by the group’s management. In the first year of operation it already became apparent that the actual attendance times did not correspond to the planned ones, which led to the loss of the planned cost savings. In retrospect, the desision to make the investment had to be judged as wrong, but the money had already been spent.
- In multinational companies, there is a great risk that decisions about the profitability of a subsidiary are made on the basis of transfer prices between group companies. However, the latter are driven by international transfer pricing regulations obeying legal requirements and leaving out the overall group view (each country wants to generate taxes locally for the value produced, making it difficult to properly charge group services back to the producing and selling individual companies).
- From a controllers’ view, planning for an individual company must therefore be based on local conditions, but must also take into account the group’s internal planning and control requirements (those parameters which the local managers can actually influence themselves and therefore also take responsibility for). From this it can be deduced that controllers must set up the management accounting system in such a way that the entire business can successfully be managed locally. The finance department at corporate headquarters, on the other hand, must use transfer pricing to ensure that the overall corporate tax burden remains as low as possible (tax optimization). From a management perspective, these two areas must be kept separate if local planning and management are to be carried out correctly and the group result optimized.

Design of the decision-relevant Management Accounting System

To design a comprehensive management accounting system that can meet the requirements resulting from the management process, we have been observing the scientific developments as well as their practical implementations at our customers for several decades. According to our findings, the following sources and systems are of decisive importance for the design of CARE:

- Marginal costing according to Hans-Georg Plaut (Grenzplankostenrechnung GPK)
- Standard costing with flexible budgets according to Wolfgang Kilger
- Contribution margin accounting according to Albrecht Deyhle
- Sales and turnover planning according to the lived market cultivation structures
- Extension to multi-level and multi-dimensional contribution margin accounting (mainly described by Lukas Rieder)
- Three dimensions for the management-oriented structuring of costs and revenues in the controller dictionary of the International Group of Controlling (IGC)
- Activity Based Costing (ABC) according to Robert Kaplan and Peter Norton, but without allocation of fixed costs (including capacity costs) to product units. This mainly corresponds to Resource Consumption Accounting (RCA)
- The Costing Levels Continuum Maturity Model by Gary Cokins
- The IMA (Institute of Management Accountants) Conceptual Framework for Managerial Costing.

References to these publications can be found in the bibliography of this blog.

Multidimensional Contribution Accounting

A truly helpful management accounting system must deliver its figures in plan and actual according to market dimensions and internal structures. Only then it enables correct decision-making. Multidimensional and multi-level contribution accounting is the instrument for this.

In accordance with the goal orientation in the entire management (see the post “Integrated Management System”) it is also necessary to record values to be achieved for specific persons in the income statement. Multidimensional contribution accounting can make a significant contribution to this.

Multidimensional contribution accounting

Contribution accounting must be structured according to the structures in the company. For the example enterprise, the following plan results: We start with the sales and the sales deductions. The proportional standard product costs are deducted from these, which results in the Plan CM I. The planned sales commissions are subtracted from this. This in turn results in Plan-CM I after sales commission of 3,668,723.

The two assortments and the product group structure are shown horizontally. In this way, the CM I for each product group is visible. In the simulation model, this observation is possible at the individual item level.

This means that all proportional costs of sales are included (withdrawal from the finished goods warehouse at standard). Vertically, the fixed cost center costs are assigned to those areas where they can be clearly influenced and thus justified. The entire process of showing directly controllable fixed cost blocks is based on this responsibility without using any keys for fixed cost allocation:

- The company plans the costs for sales promotion in the cost centers “Sales Promotion Own Products” and “Merchandise”. These are fixed product range costs that can be assigned uniquely to the assortment, but not to the product groups or even the individual articles.
- The sales area consists of the three cost centers for the sales areas and those for sales management and internal sales. As these organizational units sell all articles of Ringbook Ltd., the fixed sales costs can only be assigned to the total of all contribution margins.
- The total fixed costs of the production area (995,112) can only be clearly assigned to the range of own products, since the employees take care of all own products.
- The remaining cost centers from the warehouse to management and administration work for the entire company, which is why they are only presented in the “Total company” column.

The result is the planned EBIT (earnings before interest and taxes). Assuming that the EBIT of 201,058 also corresponds to the profit objective for the year, the following responsibilities can be derived:

- The company manager is responsible for achieving the planned EBIT.
- The cost center managers are responsible for keeping to their target costs. These are the planned costs of the activity actually performed (explained in detail later). In all cost centers that are not directly involved in product creation (that is, they do not appear in any work plan), the target costs correspond to the planned fixed costs.
- The head of procurement is responsible for realizing the planned (standard) purchase prices.
- The top sales manager is responsible for the complete sales-CM. This includes the net revenues, sales commissions, planned proportional cost of goods manufactured, and the fixed costs of the entire sales organization. This responsibility can be partially delegated to sales area managers, since they are responsible for the CM achieved in their area and their own fixed costs. It can also be delegated to assortment managers or heads of promotion areas. If there is responsibility for both, regions and assortments, this results in a “crossed responsibility” (more to this at the end of this post).

These explanations are intended to show that the structure of the multilevel contribution accounting system allows obtaining financial targets that fully correspond to the ideas of Management by Objectives. It is important that the multilevel CM-calculation is designed according to the conditions and structures of the company (not according to the textbook).

If the sales, turnover and net proceeds are planned in all relevant dimensions of sales as described in the post “Planning from the Market into the Company”, the CM calculation can be created not only multilevel but also multidimensional. The prerequisite is that both product and customer structures are structured and planned bottom-up.

Contribution margin accounting for the sales areas is created by evaluating sales planning according to sales areas and the cost centers assigned to them. Each area manager has his own cost center for which he plans the fixed costs, which he can directly influence and therefore be responsible for. These are fixed costs because they have nothing to do with product manufacturing, but with the sale of all items. If this cost block is subtracted from CM I after commissions, the area CM (sales region) is the objective to be achieved.

Planned contribution margin for sales regions and sales management

No fixed costs were directly assigned to exports because the sales manager together with his office staff wins and handles all foreign sales in addition to his management task. According to this organization, the fixed costs of exportations are included in the cost center sales management and internal sales support. Using an appropriate allocation basis, these fixed costs could be distributed between export and sales management. But the consequence would be that nobody would be responsible for the fixed costs of internal services neither for exportation. This example shows why the structure of the database and of the profitability analysis always has to be set up according to the organizational circumstances.

The sales contribution of 2,495,958 is the same as the one in in the dimension of product groups. All the fixed costs below remain the same since the cost centers for production and the other areas work for all sales areas. This again results in the same EBIT.

The salespersons planned sales volumes and revenues per product group and sales area, but not by sales channel. Therefore, in planning, CM-accounting cannot be created according to sales channels. In the actual view, however, this will be possible, since the customer number in the invoices indicates the channel to which the customer belongs.

Today it is common practice in many companies to cultivate the market along various dimensions (for example, territories, sales channels, product groups). For each of the dimensions, the same total sales and contribution margin totals are to be achieved. As mentioned, the top sales manager is responsible for the complete sales CM. In order to achieve it area managers must coordinate with product managers. A sales promotion campaign for certain products (or product groups) should result in salespersons specifically recommending the respective products in their presentations and making targeted use of any available advertising material.

This coordinated approach can be supported by cross-referencing the results targets. The columns show the contribution margins planned in the individual sales areas for each product group. In the rows, the sales promotions planned for the product groups are compared with the target CM. It can be seen that the budget for the promotion of the still small merchandise area is almost as large as that for the own products. The intention here is to promote the merchandise area. This requires salespeople making their customers more aware of the advantages of the merchandise assortment.

Contribution accounting in two market dimensions

Contribution margin accounting is a powerful tool to support objective-oriented approaches and, in particular, for promoting coordination between all areas of an organization. It can be adapted to changing corporate structures. This also applies to strategic planning. Because there it has to be decided with which products the company wants to reach which market positions in the future and thereby make the profit targets become reality. To do this, it is necessary to know which sales volumes and net revenues will be added and which will be eliminated, which costs will be incurred by the products (proportional) and which capacities and structures will have to be rebuilt for the necessary success potential (fixed).

In operational terms, contribution margin accounting helps to enable management by achieving agreement on objectives. It provides the tools for agreeing on targets for sales and net revenues down to the individual order or customer. Cost targets are mapped in such a way that they correspond to the direct influence of the holders of the objectives. The proportional manufacturing costs of an item are the target value for consumption in production. Finally, the planned fixed costs are the budgets for maintaining performance, whether in one area or in the entire company.

Contribution Margin or Full Cost

Full cost accounting leads managers to take wrong decisions because fixed costs are allocated to the costs per unit. Here is the proof.

Contribution Margin or Full Cost? What is decision-relevant?

Thanks to good negotiating of the CEO of Pekka Heating Systems Ltd., his company was able to acquire and realize a large installation order for a university building and a smaller conversion order for the heating system in a house with 6 apartments in the last period. Now the question is what kind of orders should be increasingly won in the future. A consultant was commissioned to calculate whether it would be more likely to win conversion orders or large installations of new systems. The consultant explained that, using the method he knew from school, he had first distributed the full manufacturing costs over the orders according to the number of hours worked. The costs of sales and administration were then allocated to the orders in proportion to the full manufacturing costs.

He presented the following calculation:

Contribution Margin or Full Cost — Full cost accounting

The verdict is clear: it is not advisable to accept large orders.

The project manager of the large installation project was, on the one hand, proud that Pekka Heating Systems Ltd. was able to successfully implement this large order and, on the other hand, frustrated by the massive loss of the order. Therefore he asked a friend if the consultants’ calculation was correct. The friend presented the following table:

Without order 1 the company would be bankrupt

With the following example, the friend showed him that the application of different cost allocation bases (allocation keys) leads to different order results every time, despite the same initial situation. None of the results can be correct because costs are distributed that are incurred for the whole organization.

Different fixed cost allocation keys lead to different order profits

The conclusion remains that full cost accounting is not suitable for management control, because managers need to compare both in planning and in the concrete case of application the additional net proceeds of an additional order to the direct costs incurred with this order.

Precisely because various accounting standards and tax laws require the preparation of full cost accounting, management accounting requires the courage to not allocate fixed costs from one to other cost centers, orders, and products because otherwise managers will make wrong decisions.

Contribution Margins to Cover Structure Costs

Contribution margin accounting is applicable in all industries. The procedure is described using various examples. In addition, the path from the contribution margin of a single item to the EBIT of the company is shown.

After completing the planning for proportional product costs and net revenues (see the post From Planned Sales to Net Revenue), the data to calculate the contribution margins to cover structure costs is available.

Contribution Margins to Cover Structure Costs

The proportional cost of goods manufactured includes those planned costs that are directly caused by the product (valued bills of material and work plans). All product costs are first booked as entries in the warehouse (semi-finished or finished products) at planned proportional costs (standard costs) and are withdrawn from there at the moment of delivery to the customer. The planned fixed costs remain in the cost centers.

The example of item 101060 shows how contribution margin I is created in the plan:

CMI 101060 — Contribution margin of article/item 101060

Salespeople should not get a commission based on sales or net revenue as a component of their income. Doing so often leads to rebates of all kinds being granted in order to achieve the sales targets or to increase capacity utilization. Therefore, in the example company a contribution-based commission of 2% of the achieved CM I volume is credited.

The contribution margin I (CM I) is internationally defined as the difference between net revenue and proportional product costs (see Glossary). It is easy to see that the sum of all CM I must be sufficient to cover all fixed costs and earnings before interest and taxes (EBIT) if the result is to be in line with the objective. CM I is thus the contribution to structural cost coverage. The following illustration shows its creation:

Contribution Margins to Cover Structure Costs — The interaction between production levels, warehouse positions and Contribution margins

The following planned EBIT can be shown in the example company:

This illustration is not particularly informative. In the post “Multi-Level and Multi-Dimensional CM Accounting”, more detailed insights for the management are provided.

Cross-Industry Applicability

Before that, we consider the cross-industry applicability of this profitability analysis structure. So far, the example has been developed for a manufacturing company.

- In a pure trading company, the goods purchased are usually the goods sold. The company makes no changes to the product, that is, the bills of material and the work plans remain the same, so the purchase price corresponds to the proportional cost of goods manufactured. Small adjustments can happen if purchased goods are repackaged. All other costs are fixed costs since they are the result of the organizational and capacity structure of the trading company.
- In service companies, clear product definition is a prerequisite for the installation of an integrated planning and control system. Only the structured recording of the scope of services makes it possible to record the use of purchased services or products (bill of materials) and to describe the activities to be performed in the cost centers for a product in a measurable way (work plan). In an automotive workshop, the bill of material is of relatively great importance (spare parts, additional parts, externally commissioned paint shops). In a law office it is mainly the type of case to be processed (products) and the processing times required for this in the various departments (work plan) that are decisive, rather than the use of purchased parts or services.
- Public administration companies and, to a large extent, hospitals also know the consumption of purchased goods (parts list) and the work performed by their internal departments (work plans) for the planning and control of their cases.
- In banking institutions, the market interest rates of borrowed money define the proportional cost of the money lent in a mortgage while the work steps in the process of granting the mortgage loan correspond to the work plan and thus to the proportional manufacturing costs. The trading function comes to the fore when foreign currencies or gold (coins) are involved.

With the presentation of the planning of costs, services, and revenues as well as contribution margins for a manufacturing company, a more complex case was deliberately chosen. However, as the above references are intended to show, the presented system can be applied to almost all companies.

Management-Relevant Cost Terms

In order to make correct cost decisions, the management accounting system must be able to present all costs in three dimensions. Because these dimensions interpenetrate each other, they can be represented with the cost cube.

Why management-relevant cost terms?

Enabling management control requires decision-relevant cost and revenue terms. Every manager is dependent on being able to identify which variables he can directly influence and therefore should also be responsible for in his area. He must be able to recognize in which time period he can change what cost and revenue parameters. Finally, he wants to be sure that only those cost items are charged to his area that can be unambiguously assigned.

This requires viewing costs in three dimensions according to their intended use and mapping them in the management accounting system:

Management-Relevant Cost Terms in the cost cube

These three dimensions interpenetrate each other, which is why they should be represented in a cube (see the cost cube in the Controller Dictionary, p. 146):

What does this mean for the design of Management Accounting systems?

Costs are to be planned by the unit whose manager is also directly responsible for them. Personnel costs and most third-party costs arise in the cost centers (except material). The same applies to depreciation. Material costs and product-related external services are incurred for the products. They are represented in bill of materials items and are therefore included in the costing of the products. The production managers are responsible for this. These costs are therefore to be planned and accounted for by cost center managers and product-responsible managers.

For all managers, it is important to know in which period of time their costs (and the procurement prices behind them) can be changed. In the case of personnel costs (they always arise in cost centers), hiring, notice periods, negotiated wages and rates for social benefit costs determine the period in which the costs can be changed. In the area of material and external service costs, order quantities and the agreed contract and delivery conditions determine the costs.

From the point of view of traceability, in Management Accounting, both planned and actual costs (or expenditures) must be assigned to the area that is directly responsible for them. The costs of the unit’s own employees are direct costs for a production cost center since each employee is permanently assigned to that cost center. For the orders processed by the cost center, they are indirect costs because an employee usually works on different orders in a given time period. The same applies to the consumption of operating supplies, external maintenance work, or depreciation. Direct costs of products are the raw materials and semi-finished products consumed (ex warehouse) and of externally procured external services. These items can be clearly assigned to a production order. The key to recording purchases and consumption in a management-oriented manner is therefore the account assignment of the documents (supplier invoices, payroll accounting, material procurement from stock).

In the third dimension, a distinction is made as to whether costs are caused directly by the units manufactured or sold (products or services) or by decisions that determine the capabilities of the organization (capacities of all types, size of the organization, training and further education or management services). The former are referred to as proportional costs, while the capability/capacity costs are mainly called fixed costs or structural costs.

Proportional costs are determined by sales and production, while fixed costs are determined exclusively by management decisions. To staff the anteroom of a member of the management board is a management decision just as much as the approval of a sales promotion campaign, the decision to convert existing production facilities, the purchase of vehicles for delivery or the introduction of an ERP system. Proportional costs are determined by production quantities, bills of material (where the planned consumption quantities are recorded), work plans (containing the planned times for the individual production steps in the cost centers) and planned purchase prices for raw materials and order-related external services. In a purely trading company, the purchase price for the product sold corresponds to the proportional costs, since nothing is changed in the product. All other costs of trading operations are structural costs.

To avoid confusion: We have replaced the term variable costs with proportional costs (see Controller Dictionary, p. 200), because in practice and science proportionality is often confused with controllability. If the activity of an employee in a production cost center is causally necessary for product creation (can be seen in the work plan), these are proportional costs. They are added with every unit produced. If the same employee has nothing to do due to a lack of orders, his wage is still paid, but becomes a fixed cost (reserved or unused capacity). How long the wage will continue to be paid despite underemployment (controllability) is a question of notice periods and the management’s decision what to do with this employee. From this it can also be concluded that everything that is not proportional becomes fixed costs.

To distinguish clearly between proportional and fixed costs is extremely important for the design of the management control system. For both operational and strategic decisions to be made, it must be known which costs are directly caused by the products and their sales and which will be the result of decisions on capacities and structures of the organization.

Activity-flows and Internal Structures

Managers are the customers of management accounting. They want to know whether their services provided were performed according to plan but taking into account the actual order quantities.

Activity-flows and Internal Structures are the foundation of Management Accounting

Managers decide on the dimension of structures to be built, such as buildings, facilities, machines, fleets and software applications. This leads to investment decisions and the investments subsequently lead to (imputed) depreciation costs.

Managers also determine which employees are to be recruited, exchanged or promoted and trained in their area of responsibility. This generates the personnel costs (including all social benefit costs, sick leave, vacations and public holidays).

Purchases of external services, licenses, energy are consumed in the functional areas or directly for the manufactured products and result in material costs.
Purchases of raw materials, merchandise and auxiliary and operating materials can be stored until they are consumed. As long as they are still there, no costs are incurred, only expenditures.
Contracts were entered into for all the items described, mostly by the purchasing department. The purchasing department or the ordering managers are therefore responsible for purchase prices and conditions (also applies to investments).

For the purpose of management support, purchases must therefore be clearly separated from consumption. Consumption mostly happens subsequent to purchasing and storing. The procurement of capital goods is also initially an expenditure and only leads to costs through depreciation of the installed assets.

Personnel expenditures are also not always incurred at the same time as the consumption of employee performance. Many employees receive a fixed monthly salary. They perform their work mainly in the long months with few public holidays and in periods in which only a few take holidays. A cost center manager therefore wants to know which personnel costs were consumed in a month so that he can compare them with the activity performed during this month. If, for example, a company closes down completely in July because of company holidays, no personnel costs are incurred for this month, although wage payments are higher than in other months because vacation allowance is paid out.

Each manager is responsible for QQDR (quantity, quality, deadline and result) (see “360° Management, section 1.2″). For this reason, both in planning and control, they must be able to compare the consumption of resources (valued as costs) with the services provided in the same period.

Most consumption is caused by the units produced or sold, not by management decisions. This includes, in particular, consumption of raw materials and semi-finished goods as well as personnel activities for production orders and directly activity-dependent costs of machines (e.g. energy). For management support and for the cause-related valuation of inventories it is necessary to charge these consumptions to the production orders executed (red fields).

In the sales/distribution area, a distinction must also be made between the services provided to initiate a sale and the costs of products and services consumed when a customer places an order. The former, summarized simply by the term marketing, must be planned and controlled by the respective sales managers. These can hardly be assigned to individual customers on a cause-and-effect basis. The latter are triggered by the actual sales order and can subsequently be clearly assigned to this order.

To enable the production and administrative areas to fulfill their tasks, they are supported by internal service departments. Examples include the workshop for maintenance and repairs, other workshops or laboratories, the group for internal transports, an internal energy center (electricity, steam, compressed air). The services these areas provide to the receiving cost centers can be measured (hours, kWh). In some cases they are directly dependent on the performance of the receiving area, e.g., energy consumed per machine hour. The recipients decide or agree with the internal service areas how much activities they want to receive. The receivers are therefore responsible for the quantity of services received and the service areas for the costs incurred in their area. This makes it possible to charge the proportional costs for consumed activities to the receivers in a way that is appropriate to the cause (costing internal services provided).

Internal tasks are performed in the administrative and sales-oriented areas. The services provided there differ from those of the internal service areas in several ways:

- They are necessary to coordinate the processes (management, planning, IT applications, databases).
- They ensure the timely and cost-effective availability of materials and external services (procurement)
- Legal requirements or internal rules are the cause of their execution (personnel administration, documentation requirements, audits, legal services)
- They prepare the actual sales and handle sales (marketing, sales organization, sales promotion, product management).

These internal tasks are never directly related in a cause-and-effect manner to the products or services produced and sold. Consequently, the costs of internal tasks must not be attributed to the products, as they are caused by management decisions (especially in the budgeting process, blue fields). A production manager, directly responsible for the execution of production orders according to the plan, will correctly say that he is not responsible for the internal tasks of other areas and for their respective costs.

Although many accounting regulations (international financial reporting standards and tax law requirements) require the allocation of structural costs (blue fields), accounting for management is designed in such a way that only the costs directly caused by the production orders are assigned to the latter (red fields). Consequently, only the product costs incurred by the products sold are to be charged to the sales achieved. Variances that occurred in upstream areas have no place in sales-related evaluations.

The customers of management accounting are primarily the managers. They want to be able to recognize from the internal evaluations whether the services provided in their areas were performed according to plan but taking into account the actual order quantities. Management accounting designed for management must therefore start from the activity flows and consistently charge costs only according to their cause.

10 Principles for Decision Relevance

Management accounting has decision relevance when it can quantify objectives in plans, compare the results achieved with the plans, document the differences that arised and offer leverage points for improvement. In addition, it should provide support for the assessment of forecasts.

10 Principles for Decision Relevance

Implementing this uncompromising management orientation in the design of the management accounting system requires application of the following principles:

1 Work with standards:

Management means goal-oriented proceeding. This requires that all objectives be transformed into a measurable format. As far as management accounting is concerned this requirement can be met with a standard costing system. It can be applied to prices, services, cost and revenues. Standards and the standard cost system are not new. They are often described in literature and installed in practice (see Horngren, et al., 1999, p. 575 ff.).

New is the importance these methods gain in a management-oriented design of a planning and control system. A planned purchase price for a raw material determines for the plan year the expected average purchase price to be paid for raw material or supplies. For the responsible purchaser, this value is the yardstick against which he can measure the achievement of his price objectives. By displaying purchase price variances, procurement can see how well it succeeded in realizing the target prices.

For the users of an item (for example, production), the internal standard purchase price remains unchanged during the whole year. This equally applies for merchandise in the sales organization.

2 Plan and record direct costs:

A manager will rightly insist that his area of responsibility only be charged for services, consumption and revenues that he or his employees can influence directly and thus for which he should be held responsible. That includes withdrawals from inventory (raw material, semi-finished and finished goods), external purchases directly for one’s own cost center (area of responsibility), services from other cost centers (if the consumption can be determined directly by the receiver, i.e., real internal activity charging), as well as costs that can be clearly assigned to an item/product.

3 Distinguish consistently between proportional and fixed costs:

Proportional costs are those costs caused directly by the production of units, as opposed to fixed or structural costs which result from decisions by management concerning capacities or the structure of the organization. Decisions regarding fixed costs are always made by managers. Proportional costs can be clearly compared with the units produced and the sales achieved. Proportional costs are driven by quantity and product structure. Fixed costs are the result of management decisions and are the responsibility of the deciding manager.

4 Plan and record sales deductions according to source:

Bonuses and reimbursements are usually granted retrospectively based on sales achieved in a given period. Whether cash discounts were taken can only be determined after receipt of payment. All sales deduction items should be subtracted monthly from the monthly billings. This has the advantage of not overstating a company’s profits during the year. As the actual amounts of many sales deductions are not yet known at the reporting date, standard rates should be applied and deducted from sales. These standard rates should thus be used in preparing the monthly reports.

5 Always valuate stock receipts and issues with proportional standard costs:

Similar to the valuation of raw material issued to production at the planned purchase price, standard rates (based on proportional costs) should also be applied to the valuation of receipts to and issues from the semi-finished or finished goods warehouse as well as to the valuation of goods in production, WIP. This means that all production activities performed on production orders are always valued at proportional standard cost (proportional planned cost rate of the respective performing cost center). Additions to the semi-finished goods warehouse are valued at the planned proportional product cost, as are withdrawals of finished products for sale.

This principle results from the management orientation. If in a cost center the actual costs deviate from plan, the cost center manager is charged with taking corrective action so that the variances disappear in future reporting periods. He must ensure that these deviations are rectified by means of corrective measures. Recipients of his services, be they a person responsible for production orders or a cost center manager who receives internal services, cannot directly influence these variances. From a management point of view, it is appropriate that variances are always reported at the point of origin and not passed on to the purchasing or consuming units. They are only to be presented in the overall result of the operating unit. In any case, the allocation of variances to subsequent cost centers or to products is inappropriate as there is no direct causal link between the cause of the deviation and the actions of the recipients.

6 Present contribution margins after deducting proportional standard product costs:

The planned and the realized revenues (gross and net) should always be compared to the proportional standard cost of goods sold. Production managers and their cost center managers are responsible for variances on the manufacturing side; sales is responsible for the realized net revenues.

7 Revalue year-end inventories:

The application of the standard system for the calculation of proportional standard costs requires that, in the transition from the old to the new year, all inventories must be valued with the planned proportional unit cost for the new year. If, for example, an item becomes more expensive in the new year due to price increases in purchasing or due to higher proportional cost rates (e.g., higher wages), the inventories available at the end of the year are to be revalued with the new standard rates. This prevents “comparing apples to oranges” in the planned year.

This revaluation at year end is to be implemented without affecting net income. The assessment of net income for the current year is based on the standard rates for the current year, while the assessment for the following year is based on the new rate.

8 Value fixed assets at replacement value and use imputed depreciation:

It is advisable to value fixed assets at replacement value. This gives the responsible managers a more realistic feeling about the investment needed to produce and sell their products. Replacement value is estimated with the question: “How much would have to be paid today if the asset in question were bought and installed newly and what is the planned useful life of this new asset? From these specifications, one can calculate imputed depreciation for each asset and therefore also for each cost center.

Imputed depreciation is a fair guess of the cost of use of the currently invested assets and should be deducted whenpresenting the internal EBIT to management. The total of all replacement values minus the cumulated imputed depreciation roughly shows management the necessary net investment in fixed assets to run the business.

9 Do not allocate fixed costs:

Fixed cost should neither be passed on from one cost center to another nor allocated to manufactured or sold items. The amount of fixed costs is determined by the decisions of the respective cost center manager and his superiors. They are therefore responsible for these amounts.

Since there is no direct “cause-effect-relationship” between fixed cost and units produced and sold, any allocation of fixed cost to other cost centers and from there to product units is not appropriate.

The so-called “as realistic as possible causal relationship” does not actually exist. It can only be constructed with an arbitrary allocation basis. Because of this, neither full manufacturing costs nor cost-prices per unit should be calculated in accounting for management. Fixed costs are passed on as cost blocks in the step-by-step contribution margin accounting.

10 Include in reports only revenue and cost figures that can be directly influenced by a manager:

A manager should only be held responsible for what he can directly influence himself. All plans and reports about revenues and cost should be presented in a performance-related way so that the addressee recognizes the connection immediately. Items that cannot be influenced (e.g., allocations) are not to be shown. Input services from other areas should always be valued at proportional standard rates, as the influence is exerted through the service provider. Additionally, the receiver of the report should be able to derive the time-period in which he can change individual items from the report.

Insofar as external reporting requirements, local tax law, or the determination of transfer prices require the disclosure of full manufacturing costs, these calculations should be performed outside the management accounting system. External financial statements should only be shown to those managers who bear (co-)responsibility for these so that the different valuation approaches do not create confusion within the company.

Overall, the decision- and responsibility-oriented design of the management accounting system should always be structured in a way that each manager can immediately recognize for his area which items he is directly responsible for and thus has to react to if actual results do not proceed according to plan and requires corrective measures.

While these 10 principles contradict in many ways those used in common accounting practice, they are essential for developing and implementing effective management control systems. Most ERP-systems can be rearranged to reflect this management orientation without requiring a change of software.

Full product costs are always wrong!

Fixed costs can only be charged to a product unit with the help of an arbitrarily chosen allocation key.

Full product costs are always wrong!

An engineer and board member wanted us to develop a costing system that shows the profit before deduction of interest and taxes (EBIT) by product (item number). This would require calculation of the full manufacturing cost and the cost price per item number (net revenue – cost price = EBIT).

We did not accept this engagement!

Scientifically and empirically it has been shown that full production costs or even cost prices cannot serve as reliable decision-making information. Nevertheless, the methodology of the “cost distribution sheet” is still being taught at many schools and is extensively used in practice. Even for a simple trading company that only sells one single product, the inadequacy of using total cost (EBIT) per unit for decision-making is clear. While the purchase price per unit is agreed with the supplier and can be clearly assigned to the sold unit, that is not the case with other costs:

- The procurement costs (packaging, freight, insurance) depend on the quantity ordered. They are caused by the purchase order (decision), not by the individual piece.
- The costs of the purchasing department (personnel and material costs) are determined by the size of the department (decision) and only indirectly by the quantity purchased.
- Advertising and sales promotion costs are also the result of decisions on selling activities. These costs are also decided before sales are made. These cannot be related in a direct cause-effect-relationship to the quantity of units planned or actually sold.
- This also applies to infrastructure and to the costs of managerial functions.

The following example shows how the full production cost and the cost of goods sold change when planned and actual quantities or other structural costs differ (method: simple fixed cost allocation):

Full product costs are always wrong! — Changing profits per unit due to fixed cost allocation

Although the costs directly incurred by the product sold are always the same, each situation presented gives rise to a different full manufacturing cost or cost price per unit. This is due to the fact that the structural costs (fixed costs) determined by management decisions were allocated to the product unit based on sales volume.

If the example is extended to a company offering several products and possibly also producing semi-finished products, additional cost allocation keys would have to be used. This is because the parts delivered to inventory would have to bear a proportionate share of the fixed costs of procurement and production readiness (full production costs). The fixed costs of sales and marketing, of the remaining internal functions, and of overall management would have to be allocated to the units sold in order to calculate the cost of goods sold per unit. Whatever allocation factors are used to achieve these allocations is therefore always wrong. This is because all fixed costs are a result of management decisions (budget) and are only indirectly dependent on the units produced or sold.

Only the costs caused by the actual production of a product unit can be clearly assigned to a product unit. Behind these costs are the consumption of raw materials, external services, semi-finished products, and own production activities. These are determined by bills of material, workplans, and recipes (technical cause-effect chains). These are the proportional (planned) manufacturing costs. There is never a direct causal relationship between the fixed costs of the support functions and the units manufactured or sold.

In other words:

There is no such thing as a doubt-free profit per unit before interest and taxes (EBIT), because it is calculated based on arbitrarily chosen allocation factors.

There is also no such thing as “as far as possible cause-based allocation” because, due to the lack of a direct cause-and-effect chain, an allocation factor must be used anyway.

This insight must be taken into account when designing decision-relevant management accounting systems. Managers correctly argue that they should only be responsible for cost elements they can directly influence themselves.