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ACCA Applied Knowledge · Management Accounting

Accounting for Material, Labour and Overheads in ACCA Management Accounting

This chapter shows how a business measures the cost of materials, labour and overheads and charges them to units of product. You value inventory, control stock with EOQ, price labour, share overheads using a rate, adjust for over- or under-absorption, and reconcile marginal and absorption profits.

What this chapter covers

This chapter covers the three cost elements that make up the cost of a product: materials, labour and overheads. You learn how to value inventory using FIFO, LIFO and AVCO. You learn how to decide how much to order using EOQ. You learn how labour is paid and how to measure labour turnover and efficiency. Then you learn how overheads are allocated, apportioned and absorbed into products.

The chapter ends with two linked ideas. Over- or under-absorption shows what happens when your overhead rate does not match actual spending. The marginal versus absorption costing reconciliation shows why profit differs when fixed overheads are treated differently and inventory levels change.

The chapter links to the rest of the MA paper. The costs you build here feed into costing methods, cost-volume-profit analysis, budgeting and standard costing. Section A tests the calculations in short objective questions. Section B questions on budgeting and standard costing assume you can already cost materials, labour and overheads correctly. If this chapter is weak, those later topics become harder.

Section A of MA is 35 two-mark objective test questions, and many of them are short calculations from costing topics like these. Each topic has a clear method, so steady practice turns into reliable marks. Inventory valuation, EOQ, absorption rates and profit reconciliation are all common question types. Because the content also underpins budgeting and standard costing in Section B, time spent here pays off twice. You need the pass mark of 50%, and accurate, fast calculations in this chapter are one of the most dependable ways to build it.

Accounting for material, labour and overheads: topics in the order to study them

  1. 1Accounting for Materials: Inventory Valuation (FIFO, LIFO, AVCO)Start with the simplest cost element and learn how issues and closing inventory are priced, because later topics use these values.
  2. 2Inventory Control and Economic Order Quantity (EOQ)Once you can value stock, learn how much to order and when, which builds on holding and ordering costs.
  3. 3Accounting for Labour Cost and Remuneration MethodsMove to the second cost element and learn how pay methods such as time rate, piecework and bonus schemes are calculated.
  4. 4Labour Turnover and Labour Efficiency MeasuresThis follows pay methods because it measures the cost and performance of the workforce using the same labour data.
  5. 5Overheads: Allocation, Apportionment and AbsorptionOverheads are the hardest element, so study them after materials and labour, when you know what direct costs look like.
  6. 6Over- and Under-Absorption of OverheadsYou can only calculate this once you understand how an absorption rate is set and applied.
  7. 7Marginal vs Absorption Costing Profit ReconciliationFinish with this because it needs absorption rates, fixed overheads and inventory changes all together.

How to prepare Accounting for material, labour and overheads

Treat this chapter as a set of calculation methods. Learn each method, then practise until you can do it quickly without a calculator error.

  1. Learn the method for each topic in plain steps, such as the order of FIFO issues or the EOQ formula, before attempting questions.
  2. Work two or three short calculations per topic by hand, writing each stage so you can find errors.
  3. Practise objective test question types: multiple choice, multiple response and number entry, and note the units and rounding the question asks for.
  4. Make a one-page sheet of formulas, such as EOQ = √(2 × Co × D ÷ Ch), and the absorption rate = budgeted overhead ÷ budgeted activity.
  5. Do the final two topics together: set an absorption rate, calculate under- or over-absorption, then reconcile the profits.
  6. Finish with timed mixed sets of short questions, aiming for about two minutes or less per two-mark question, then review every wrong answer.

Common mistakes in Accounting for material, labour and overheads

  • Mixing up FIFO and LIFO when pricing issues and closing inventory.

    Fix: Ask which units are issued first, then price the remaining units from the other end of the stock.

  • Using the wrong figures in the EOQ formula, such as monthly demand with annual holding cost.

    Fix: Convert demand and holding cost to the same period, usually a year, before you calculate.

  • Using actual activity to set the absorption rate instead of budgeted activity.

    Fix: Use budgeted overhead and budgeted activity for the rate, then apply it to actual activity.

  • Getting the direction of over- and under-absorption wrong.

    Fix: Remember that absorbed less than actual is under-absorbed, and adjust profit down. Absorbed more is over-absorbed, and profit goes up.

  • Reconciling marginal and absorption profit using total fixed overhead rather than the movement in inventory.

    Fix: Multiply the change in inventory units by the fixed overhead per unit. If inventory rises, absorption profit is higher.

  • Ignoring what the question asks for in number entry answers, such as rounding or units.

    Fix: Re-read the last line of the question and check units, currency and decimal places before you submit.

Last-day revision: Accounting for material, labour and overheads

  • FIFO issues oldest cost first, so closing inventory is at the latest prices.
  • LIFO issues latest cost first, so closing inventory is at the oldest prices.
  • AVCO uses a weighted average cost, recalculated after each receipt.
  • EOQ = √(2 × Co × D ÷ Ch), where Co is cost per order, D is annual demand and Ch is holding cost per unit per year.
  • At EOQ, annual ordering cost equals annual holding cost.
  • Labour turnover rate = leavers in the period ÷ average number of employees × 100.
  • Allocate whole costs to one cost centre; apportion shared costs using a fair basis.
  • Absorption rate = budgeted overhead ÷ budgeted activity level.
  • Overhead absorbed = actual activity × absorption rate.
  • Under-absorption: absorbed is less than actual overhead, so profit is reduced.
  • Over-absorption: absorbed is more than actual overhead, so profit is increased.
  • Profit difference = change in inventory units × fixed overhead absorption rate per unit.

Accounting for material, labour and overheads practice questions

Accounting for material, labour and overheads in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Accounting for material, labour and overheads: frequently asked questions

Which topics in this chapter come up most often in the exam?

Inventory valuation, EOQ, absorption rates and profit reconciliation are common calculation topics. Labour and turnover questions are usually short. Prepare all seven topics, because Section A samples widely.

Do I need to learn LIFO if IFRS does not allow it?

Yes. The MA paper tests costing methods for management purposes, so you should know how to apply FIFO, LIFO and AVCO. Practise all three until the steps are automatic.

How do I decide between marginal and absorption profit being higher?

Compare production with sales. If inventory rises, absorption costing profit is higher, because some fixed overhead is carried forward in inventory. If inventory falls, marginal costing profit is higher.

How long should I spend on this chapter?

Spend enough time to do each topic's calculations accurately and quickly. Move on when you can complete short questions on every topic without looking at your notes, then return in mixed practice.