Budget Accuracy Scorecard

Budget vs actual analysis compares what you planned to spend (budget) against what you actually spent (actuals) across categories. The variance between the two reveals forecasting accuracy and highlights areas of overspending or underspending. This is a core financial management practice, typically done monthly. Track variances alongside your burn rate to understand how budget misses affect your cash runway.

For mature businesses, keeping variance under 5% per category is excellent (A grade). Startups typically see 10-15% variance, which is acceptable but improvable. Any category with over 15% variance needs attention. Revenue is typically hardest to forecast accurately, while fixed costs like payroll should be within 1-2%. Read our guide on creating a startup budget for tips on improving accuracy.

Use rolling 3-6 month averages instead of guessing. Break large categories into sub-categories for more granular forecasting. Review actuals monthly and adjust future budgets based on trends. Require pre-approval for unbudgeted expenses. Use a profitability calculator to understand how budget overages affect your bottom line.

Monthly at minimum. For startups with tight runway, a bi-weekly or even weekly check on key expense categories helps catch drift early. Reserve detailed analysis for month-end close. Board-ready reports typically compare monthly and year-to-date variances. Use our P&L guide for seed-stage companies to understand what a healthy monthly review looks like.

Common causes include: overly optimistic revenue forecasts, unplanned one-time expenses, scope creep in marketing or engineering, not accounting for seasonality, and using annual budgets without monthly adjustment. Variable costs like cloud infrastructure and contractor spend are typically the hardest to predict accurately. Track these closely with a cash flow forecast calculator for better visibility.