Dear CFO by Phoenix Strategy Group

Planning & reporting

Variance analysis

Variance analysis explains the gap between actual results and what was expected, by measuring it and breaking it into the causes behind it.

Formula

Variance = Actual − Budget; for revenue, Volume variance = (Actual units − Budget units) × Budget price and Price variance = (Actual price − Budget price) × Actual units

Worked example

Budget1,000 units at $50 = $50,000
Actual1,100 units at $48 = $52,800
Volume variance(1,100 − 1,000) × $50 = +$5,000
Price variance($48 − $50) × 1,100 = −$2,200

+$5,000 − $2,200 = +$2,800 total variance: more units sold, at a lower price than planned.

Why it matters

A single variance number says you are off plan but not why. Splitting it shows whether the business sold more, charged less, or spent differently, and each of those calls for a different response.

Common mistakes

Where it misleads

Stopping at the total variance, so a price cut hidden by higher volume goes unnoticed.

Chasing every small variance instead of setting a threshold and explaining only the ones that matter.

Reading a favorable revenue variance as good news without checking whether the extra volume came at a lower margin.

Stop calculating it by hand.

Dear CFO keeps your statements, forecasts and metrics current from the systems you already run.