Variance Analysis Explainer
Variance analysis examines differences between actual results and a budget, forecast, or standard. The arithmetic identifies where performance differed; the management work is determining why, whether the difference will continue, and what response is appropriate.
Revenue can vary because of price, volume, and mix. Costs can vary because input prices, quantities, labor rates, efficiency, capacity, or activity levels changed. A flexible budget adjusts expected cost for actual volume, helping separate activity effects from spending or efficiency effects.
Favorable does not always mean good, and unfavorable does not always mean failure. Lower maintenance may create a favorable cost variance while increasing future breakdowns. Higher material cost may reflect better quality that reduces waste and warranty claims.
Effective review focuses on material, actionable differences and assigns ownership only where managers have influence. Investigate linked causes across functions, update forecasts, and record decisions. Avoid incentives that reward short-term numbers at the expense of quality, safety, customers, or long-term value.
Use a flexible budget to restate expected results at actual activity.
Then examine price, mix, spending, and efficiency effects.
A favorable variance can hide underinvestment or quality problems.
Judge causes and consequences, not the sign alone.
Investigate material differences that management can influence.
Use findings to correct operations and improve future forecasts.
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