Plain definition
An adverse variance is an actual result that harms the stated measure compared with plan, such as revenue below budget or cost above budget. It signals a difference to investigate, not automatic poor performance.
Illustrative example
Monetary examples use Saudi riyals (SAR). The same principles apply in other currencies.
A repair team budgets overtime of and incurs after a safety-critical equipment failure. The adverse variance protects customer service and may be preferable to missing contractual deadlines. Management records the failure, tests a maintenance fix, and updates the cash forecast for the payment.
| Actual overtime | |
|---|---|
| Budgeted overtime | |
| Adverse variance |
Why it matters
A necessary cost can be better than the alternative. Understanding the cause lets management prevent recurrence without treating safety, service, or a temporary response as waste.
Practical consequence
Separate the amount from its cause: timing, volume, price, efficiency, or an unplanned event. Escalate a material recurring variance, but do not punish an owner for a necessary action before testing the alternative.