What is a Flexible Budget?
A flexible budget adjusts budgeted costs and revenues to the actual level of activity achieved, unlike a static budget that stays fixed at the original forecast. It lets managers compare apples to apples when analyzing performance.
A flexible budget recalculates budgeted costs at actual output: Flexible Budget = (Budgeted Variable Cost per Unit × Actual Units) + Budgeted Fixed Costs, making variance analysis meaningful even when volume differs from the plan.
- •Set once at the start of the period
- •Based on budgeted (planned) volume
- •Doesn't adjust for actual activity
- •Useful for long-range planning
- •Recalculated at actual volume
- •Based on actual units achieved
- •Adjusts variable costs to real activity
- •Useful for performance evaluation
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Step-by-step worked examples
Budgeted variable cost is $12/unit and budgeted fixed costs are $8,000. Actual production is 3,000 units. Find the flexible budget total cost.
FB = (VC × Q) + FC FB = (12 × 3,000) + 8,000 FB = 36,000 + 8,000 = $44,000
The flexible budget for 3,000 units is $44,000, but actual costs were $47,500. Find the flexible-budget (spending) variance.
Variance = Actual Cost − Flexible Budget Variance = 47,500 − 44,000 = $3,500 Unfavorable
The static budget assumed 2,500 units at $12 variable cost + $8,000 fixed = $38,000. Actual output was 3,000 units. Find the sales-volume variance component of the flexible budget vs static budget.
Flexible Budget (3,000 units) = (12×3,000)+8,000 = 44,000 Static Budget (2,500 units) = (12×2,500)+8,000 = 38,000 Sales-Volume Variance = 44,000 − 38,000 = $6,000 Favorable (higher volume)
Flashcards
Quick quiz
Q1.A flexible budget adjusts for changes in…
Q2.Variable cost/unit = $10, fixed costs = $5,000, actual units = 1,000. Flexible budget total?
Q3.Actual costs of $16,000 vs a flexible budget of $15,000 is a…
Q4.The difference between the static budget and the flexible budget is called the…
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Common mistakes
Comparing actual results directly to the static budget. — Correct: Compare actual results to the flexible budget (same volume) to isolate cost control from volume effects.
Assuming fixed costs scale with volume in a flexible budget. — Correct: Budgeted fixed costs stay constant in total; only variable costs scale per unit.
Treating any variance as a management failure. — Correct: A favorable sales-volume variance can simply mean higher demand, not better cost control.
Skipping the flexible budget and going straight to variance conclusions. — Correct: Always build the flexible budget at actual volume first, then compare to actual and static.
FAQ
What is a flexible budget in managerial accounting?
A budget that recalculates costs and revenue targets based on actual activity level, unlike a fixed static budget.
What is the flexible budget formula?
Flexible Budget = (Budgeted Variable Cost per Unit × Actual Units) + Budgeted Fixed Costs.
How do you calculate a flexible budget variance?
Subtract the flexible budget amount from actual results at the same volume: Variance = Actual − Flexible Budget.
What are examples of flexible budgets in practice?
A factory recalculating its cost budget after producing 3,000 units instead of the planned 2,500, or a hotel adjusting variable costs for actual occupancy.