What it means
Budgets set expectations and variance analysis measures the difference between those expectations and reality. A variance is called unfavourable whenever the difference reduces profit, whether that comes from overspending, underselling or both at once.
The point of flagging these gaps is to prompt questions rather than to allocate blame. A large unfavourable variance on materials might mean a supplier raised prices, or that the factory wasted more input than expected, and those two causes call for very different responses.
Cost variances are calculated as actual cost minus budgeted cost, so a positive result is unfavourable. Revenue variances work the other way round, taking budgeted revenue minus actual revenue, so again a positive result means the business fell short of plan.
Standard costing splits a total cost variance into a price element and a quantity element. The price variance isolates the effect of paying more or less per unit of input, while the usage variance isolates the effect of consuming more or fewer units than the standard allows.
One important nuance is that variances should be measured against a flexible budget wherever volume has moved. If a business sells 20% more than planned it will inevitably spend more on materials, and calling that an unfavourable variance without adjusting for volume is simply misleading.
In practice
Real-world examples.
Example
A marketing team budgets $180,000 for a quarter and spends $214,000 after adding an unplanned trade show, an unfavourable variance of $34,000 or roughly 19% over. The head of marketing has to justify the overspend against the leads it produced.
Example
A distributor budgets revenue of $4,000,000 for the half year and reports $3,640,000, an unfavourable revenue variance of $360,000 or 9%. Two large customers pushed orders into the next period, so the shortfall is a timing issue rather than lost business.
Example
A workshop budgeted 5,000 labour hours at $28 an hour, or $140,000, but used 5,300 hours at $29 an hour, costing $153,700. The $13,700 unfavourable variance came from a mix of overtime rates and slower than expected assembly on a new model.
Formula
Calculation
Cost variance = actual cost - budgeted cost, where a positive figure is unfavourable
Revenue variance = budgeted revenue - actual revenue, where a positive figure is unfavourable
Price variance = (actual price per unit - standard price per unit) x actual quantity
Usage variance = (actual quantity - standard quantity) x standard price per unit
A packaging plant budgeted 100,000 kg of board at a standard price of $5.00 per kg, giving a materials budget of 100,000 x $5.00 = $500,000. It actually used 105,000 kg at $5.20 per kg, an actual cost of 105,000 x $5.20 = $546,000.
The total materials variance is $546,000 - $500,000 = $46,000 unfavourable, which is $46,000 / $500,000 = 9.2% over budget. Splitting it, the price variance is ($5.20 - $5.00) x 105,000 = $0.20 x 105,000 = $21,000 unfavourable, and the usage variance is (105,000 - 100,000) x $5.00 = 5,000 x $5.00 = $25,000 unfavourable. The two parts add back to $21,000 + $25,000 = $46,000, which confirms the split.Case study
Seen in the real world.
Copperleaf Bakeries is an illustrative, fictional wholesale bakery supplying regional supermarkets. Its quarterly ingredients budget assumed 300,000 kg of a butter and flour blend at a standard $4.00 per kg, or $1,200,000 in total.
Actual usage came in at 310,000 kg at $4.30 per kg, an actual spend of $1,333,000 and an unfavourable variance of $1,333,000 - $1,200,000 = $133,000, just over 11% above budget. The price element accounted for $0.30 x 310,000 = $93,000 and the usage element for 10,000 x $4.00 = $40,000, together making up the full $133,000.
The split changed the conversation entirely. The price element was a commodity move nobody in the business could control, but the usage element traced back to a new oven line producing more waste during changeovers, which the operations team was able to fix within a quarter.
Watch out
Common mistakes.
- Treating every unfavourable variance as poor management, when overspending on materials because sales exceeded plan is usually good news.
- Comparing actual costs against a fixed budget when volume has changed, instead of flexing the budget to the activity level actually achieved.
- Reporting only the total variance and never splitting it into price and usage, which hides the one part the business can genuinely control.
Questions
People also ask.
Is an unfavourable variance always bad?
No, it simply means the result was worse than budget, and the cause can be higher volume, a deliberate investment or an unrealistic budget in the first place.
How large does a variance have to be before anyone investigates it?
Most finance teams set a threshold combining a percentage of budget with a minimum dollar amount, so small noise does not consume review time.
What is the opposite called?
A favourable variance, meaning a result better than budget, and the two are normally reported side by side in the monthly management accounts.
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