Standard Costing

🟢 Lite — Quick Review (1h–1d)

Rapid summary for last-minute revision before your exam.

Standard Costing is a cost-control technique that fixes a predetermined standard cost per unit of output, records actual costs alongside it, and reports the difference as variances. The core mechanic: Total Variance = (Standard Cost − Actual Cost). Each variance is split into a price/rate component (timing of purchase or hiring) and a usage/efficiency component (how much was consumed).

The must-know formulae for the ACCA F5/PM and CA Pakistan papers are:

Material Price Variance = (Standard Price − Actual Price) × Actual Quantity
Material Usage Variance = (Standard Quantity − Actual Quantity) × Standard Price
Labour Rate Variance = (Standard Rate − Actual Rate) × Actual Hours
Labour Efficiency Variance = (Standard Hours − Actual Hours) × Standard Rate
Fixed Overhead Volume Variance = Absorbed Fixed Overhead − Budgeted Fixed Overhead

A favourable (F) variance means actual is better than standard (cheaper, faster); an adverse (A) variance means worse. The exam almost always tests the split into price + usage, not just the net total.

🟡 Standard — Regular Study (2d–2mo)

Standard content for students with a few days to months.

Setting the Standard

A standard cost card lists the standard price per kg/hour and the standard quantity per unit of finished product, built up for direct material, direct labour, variable overhead, and fixed overhead. Standards must be fixed before the period begins and represent attainable (expected) conditions — allowances for normal spoilage, operator fatigue, and routine machine downtime — rather than ideal standards (flawless conditions, practically unattainable, demotivating). A basic standard stays unchanged for years as a long-run benchmark; a current standard is revised whenever conditions change.

Variance Analysis Framework

Variances are isolated so that managers are held accountable only for what they control. Material Price Variance is usually the buying manager’s responsibility because it arises at the moment of purchase. Material Usage Variance falls on the production manager. Labour Rate Variance is HR’s domain; Labour Efficiency Variance belongs to the production supervisor. Fixed Overhead Expenditure Variance is caused by spending more or less than the fixed budget and is a finance/overhead manager issue; Fixed Overhead Volume Variance is not controllable by production because it reflects the difference between planned capacity utilisation and actual output.

Absorption vs Marginal Variances

Under absorption costing, fixed overhead is absorbed into units via a standard absorption rate per standard hour. This creates the volume variance: when fewer units are produced than budgeted, fixed overhead is under-absorbed and the volume variance is adverse — even if the factory spent exactly what it should have. The interlocking reconciliation between absorption profit and marginal costing profit flows entirely through this volume variance. ACCA examiners test this reconciliation in PM (Performance Management) every diet.

Exam Pattern

Expect a 10–15 mark question in which you compute price, usage, rate and efficiency variances from a given material purchase/labour schedule, then comment on possible causes (sub-standard material, hiring of unskilled workers, idle time, overtime premium).

🔴 Extended — Deep Study (3mo+)

Comprehensive coverage for students on a longer study timeline.

Worked Mini-Example

A factory budgets production of 1,000 units. Standard material per unit = 4 kg at Rs 50/kg. Actual output = 900 units. Actual material purchased and used = 3,800 kg at Rs 53/kg.

Standard cost of actual output = 900 × 4 × 50 = Rs 180,000
Actual cost = 3,800 × 53 = Rs 201,400
Total variance = 180,000 − 201,400 = Rs 21,400 Adverse (A)
Material Price Variance = (50 − 53) × 3,800 = Rs 11,400 A
Material Usage Variance = (3,600 − 3,800) × 50 = Rs 10,000 A

The split tells the manager two separate stories: the buying function paid Rs 3/kg too much, and the production function used 200 kg more than standard for the actual output.

Sales and Mix Variances (Advanced)

For CA Pakistan Advanced Accounting and ACCA APM, variance analysis is extended to revenue: Sales Price Variance = (Actual Price − Standard Price) × Actual Units Sold; Sales Volume Variance = (Actual Units − Budgeted Units) × Standard Contribution. Sub-divide volume further into mix (proportion of products sold) and market-size (total market growth/shrinkage) variances.

Common Mistakes

Treating the volume variance as controllable — it is not; it is the cost of unused capacity.
Using actual hours in the fixed overhead absorption instead of standard hours — this masks the volume variance entirely.
Forgetting to flag variances as F or A at the point of calculation; markers deduct marks for omission.
Confusing basic vs current standards in theory questions — basic = unchanged long-term, current = revised to today’s conditions.

Practice Prompts

Compute labour and variable overhead variances where standard hours for actual output = 5,000, actual hours = 5,400, standard rate Rs 40/hr, actual rate Rs 42/hr, variable overhead absorbed at Rs 8/std hr and actual variable overhead Rs 46,000.
Reconcile absorption costing profit of Rs 250,000 with marginal costing profit given a fixed overhead volume variance of Rs 20,000 A and any other relevant figures supplied.

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Standard Costing