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Management Accounting · Monitoring performance and reporting

Variance Analysis Basics and Standard Costing for ACCA Management Accounting

Updated 11 October 2026 · Fact-checked

Standard costing sets a planned cost per unit for materials, labour and overheads. A variance is the difference between the standard (or budget) result and the actual result. If the difference increases profit it is favourable (F). If it reduces profit it is adverse (A). Always compare like with like, using a flexed budget where output differs.

Understand Variance Analysis Basics and Standard Costing

A standard cost is a carefully planned unit cost. It is built from the expected quantity of each input and the expected price of each input. For example, one unit may need 3 kg of material at $4 per kg, and 2 hours of labour at $9 per hour. The standard cost card lists all of these.

Standards are set using past records, engineering studies, time and motion studies, supplier quotes and expected price changes. You also choose the type of standard. An ideal standard assumes perfect conditions with no waste or idle time. An attainable standard allows for normal losses and delays. A current standard reflects present conditions. A basic standard stays unchanged for a long time. Attainable standards tend to motivate best because staff see them as achievable.

A variance is the difference between what something did cost and what it should have cost. If the actual result is better for profit, the variance is favourable (F). A lower actual cost than standard is F. A higher actual revenue than standard is F. If the actual result is worse for profit, it is adverse (A).

The key rule is to compare like with like. If you made 1,200 units but the budget was for 1,000, comparing total budgeted cost with total actual cost is misleading. You first flex the budget to the actual activity level. Then the variance shows real efficiency or price differences, not just volume.

Variances support management by exception. Managers investigate large or unusual variances and ignore small ones. A variance tells you what happened, not why. You must look for the cause, and the cause may lie in another department.

Key formulas to remember

Variance
Variance = Actual result − Standard (or flexed budget) result
Then label it F if profit is higher than standard, A if profit is lower.
Standard cost per unit
Standard cost = Standard quantity × Standard price (summed over materials, labour and overheads)
Taken from the standard cost card.
Flexed budget (variable items)
Flexed budget = Budgeted cost per unit × Actual units
Fixed costs are not flexed; they stay at the budgeted total.
Direction rule for costs
Actual cost < Standard cost = F; Actual cost > Standard cost = A
Use the opposite test for revenue: actual revenue > standard = F.
Total variance check
Total cost variance = Flexed standard cost − Actual cost
Sub-variances (price, usage) should add up to this total.

How to solve Variance Analysis Basics and Standard Costing questions

Use this method for any basic variance or standard costing question.

  1. 1Read what is asked: a variance amount, its direction (F or A), or a standard cost.
  2. 2Write down the standard cost per unit from the card, or work it out as quantity × price.
  3. 3Find the actual output and flex the standard or budget to that output.
  4. 4Find the actual cost or revenue for the same item.
  5. 5Subtract to find the difference, comparing actual with flexed standard.
  6. 6Decide F or A by asking: did this raise or lower profit?
  7. 7Check the answer fits the format required, such as a number with the right sign or the word F or A.
  8. 8Briefly consider a likely cause if the question asks for interpretation.

Quickest way: Flex, compare, label

When to use it: Use in Section A objective questions where you have about three minutes or less per question.

  1. Compute the flexed standard first: standard per unit × actual units.
  2. Subtract the smaller from the larger cost figure.
  3. For costs, higher actual means A and lower actual means F.
  4. For sales revenue or profit, higher actual means F.
  5. Eliminate multiple-choice options with the wrong F or A label before calculating further.

Common mistakes in Variance Analysis Basics and Standard Costing

  • Comparing actual cost with an unflexed budget when output differs.

    The budget figure is the first number on the page and looks ready to use.

    Fix: Always check if actual units equal budgeted units. If not, flex variable costs to actual output first.

  • Labelling an adverse cost variance as favourable because the number is positive.

    Students forget that for costs, higher spending is bad.

    Fix: For costs: actual above standard is A. For revenue: actual above standard is F. Say it aloud before choosing.

  • Flexing fixed costs along with variable costs.

    Students multiply every cost line by actual units.

    Fix: Fixed costs stay at the budgeted total. Only variable costs change with activity.

  • Treating the variance as proof of poor management.

    A number looks like a verdict.

    Fix: A variance only flags a difference. Causes can be inaccurate standards, price changes or problems in another department.

  • Mixing up standard cost per unit with the standard for total actual output.

    Units and totals are confused under time pressure.

    Fix: Label each figure as per unit or total. Multiply per-unit standards by actual units when you need a total.

Worked examples

Example 1

A product has a standard material cost of 3 kg at $4 per kg. Actual output was 500 units. Actual material cost was $6,300. Calculate the total material cost variance and state whether it is favourable or adverse.

Show the solution
  1. Standard cost per unit = 3 × $4 = $12.
  2. Flexed standard cost for 500 units = 500 × $12 = $6,000.
  3. Actual cost = $6,300.
  4. Difference = $6,300 − $6,000 = $300.
  5. Actual cost is higher than standard, so profit is lower.

Answer: $300 adverse

Example 2

Budgeted sales were 1,000 units, with budgeted variable cost of $20 per unit and budgeted fixed cost of $15,000. Actual output was 1,200 units. Actual total costs were $38,400. Calculate the total cost variance against the flexed budget.

Show the solution
  1. Flexed variable cost = 1,200 × $20 = $24,000.
  2. Fixed cost stays at $15,000.
  3. Flexed budget total cost = $24,000 + $15,000 = $39,000.
  4. Actual cost = $38,400.
  5. Difference = $39,000 − $38,400 = $600.
  6. Actual cost is lower than the flexed budget, so it is favourable.

Answer: $600 favourable

Exam tips

  • In objective tests, the F or A label is often where marks are lost. Check it last, every time.
  • Flex the budget before comparing whenever actual and budgeted output differ.
  • In multiple response questions, select exactly the stated number of options. Read each statement about variances as true or false on its own.
  • For number entry, follow the required format. Enter the amount, not the F or A letter, unless the question asks for it.
  • Know the types of standard. Questions often ask which type motivates best (attainable) or which is unrealistic (ideal).

Practice questions from Monitoring performance and reporting

Variance Analysis Basics and Standard Costing in other exams

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

Variance Analysis Basics and Standard Costing: frequently asked questions

What is standard costing in management accounting?

Standard costing sets a planned cost for each unit of output using expected quantities and prices. Actual costs are then compared with these standards. The differences are variances, which help managers control costs.

How do I know if a variance is favourable or adverse?

Ask whether the difference increases or reduces profit. Lower costs or higher revenue than standard are favourable. Higher costs or lower revenue are adverse.

Why do we flex the budget before calculating variances?

A fixed budget is for one activity level. If actual output is different, the comparison mixes volume effects with efficiency effects. Flexing gives a fair comparison at the actual output.

Which type of standard is best for motivation?

Attainable standards are usually best. They are challenging but achievable, so staff accept them. Ideal standards often produce constant adverse variances and can demotivate.