Chapter 10: Standard Costing and Variances

Study Guide Highlights

Standards and cost cards

Standards provide benchmarks for the quantities and prices expected under defined conditions. Different grades of standard are distinguished, with attention to how demanding or attainable targets can influence behaviour. A standard cost card then brings together the expected inputs for a unit of output. Its value is not merely as a costing document; it supplies the reference point against which actual performance can later be analysed.

Sales, material and labour variances

Variance analysis separates an overall difference into components that reflect different drivers. Sales price and volume effects are covered, along with the principal material and labour variances, including situations where purchasing, usage, efficiency or idle time create different explanations. Consistent units matter, as does distinguishing quantities bought from quantities used where inventory movements make those figures different.

Overheads and operating statements

Variable and fixed overhead variances extend the same standard-versus-actual logic to overhead control, while the treatment can depend on the costing basis used. Operating statements then reconcile expected and actual profit by bringing the relevant variances together. This reconciliation serves as both a reporting tool and a check on the internal consistency of the analysis, rather than a separate calculation with no connection to the underlying variances.

Interpretation and investigation

A variance is useful only when it leads to a plausible explanation and an appropriate response. Significance, controllability, cost of investigation and the possibility that variances are interdependent all matter. A favourable price variance may, for example, sit beside adverse efficiency or usage effects that share a common cause. Interpretation therefore requires management to read the pattern of variances rather than judge each number in isolation.