Variance Analysis: A Complete Guide

Variance analysis is a key management accounting technique used to monitor and control financial performance. By comparing actual results to budgeted or standard figures and explaining the differences, it helps managers identify where performance has deviated from plan — enabling timely corrective action. It is a major topic in ACCA Performance Management (PM) and CIMA Management Level exams.

What Is a Variance?

A variance is the difference between an actual result and a planned (budgeted or standard) figure. Variances are favourable (F) when actual performance is better than planned — lower costs or higher revenue — and adverse (A) when actual is worse than planned. Management by exception focuses attention on significant variances rather than reviewing all results equally.

Material Variances

Material price variance = Actual quantity purchased × (Standard price − Actual price). Favourable when material costs less than standard.

Material usage variance = Standard price × (Standard quantity for actual production − Actual quantity used). Favourable when less material is used than standard.

Total material cost variance = Price variance + Usage variance.

Labour Variances

Labour rate variance = Actual hours worked × (Standard rate − Actual rate). Adverse when workers are paid more per hour than standard.

Labour efficiency variance = Standard rate × (Standard hours for actual production − Actual hours worked). Favourable when production is completed in fewer hours than standard.

Overhead Variances

In absorption costing, the fixed overhead expenditure variance compares actual fixed overheads to budgeted. The volume variance measures the impact on absorption of producing more or fewer units than budgeted.

Sales Variances

Sales price variance = Actual volume × (Actual price − Standard price).
Sales volume variance = Standard profit per unit × (Actual volume − Budgeted volume).

Interpreting Variances in Context

Calculating variances is only the first step — understanding why they occurred is more valuable. A favourable material price variance might reflect good purchasing, or lower quality materials causing an adverse usage variance downstream. Variances must always be read in context and in conjunction with related variances.

Frequently Asked Questions

What is a standard cost?

A standard cost is a predetermined unit cost set in advance for budgeting and control. It represents the expected cost per unit under normal operating conditions. Actual costs are compared to standard, with differences reported as variances.

How are variances used in performance management?

Variances are allocated to the manager responsible — purchasing managers for price variances, production managers for usage and efficiency variances, sales managers for sales variances. This supports accountability and targeted performance improvement.