Margin of Safety Calculator
Calculate the margin of safety in amount and percent: how far can sales fall before you reach the break-even point?
Things to keep in mind:
- Break-even depends on the fixed/variable cost split; a wrong split misleads the margin.
- A changing sales mix changes the contribution margin and break-even; a single-product assumption is approximate.
- The result is for management accounting and does not replace financial statements or tax calculations.
Calculator
Result
Enter the values and press Calculate to see the result here.
About this tool
The margin of safety shows how far actual sales are above the break-even point. The higher the ratio, the lower the risk of a loss if sales fall. Known in cost accounting as "margin of safety", it is used in pricing, budgeting and capacity decisions to see how much of a buffer sales carry.
Formulas
- Margin of safety (TRY) = Actual sales − Break-even sales
- Margin of safety (%) = (Actual sales − Break-even sales) / Actual sales × 100
- Break-even share (%) = Break-even sales / Actual sales × 100
Amounts and percentages are rounded to 2 decimals, half up (HALF_UP). Actual sales must be greater than zero; enter both figures for the same period and excluding VAT.
Example 1: monthly sales of TRY 200,000 and break-even sales of TRY 150,000 give a margin of safety of TRY 50,000.00, or 25.00%. If sales fall by more than 25% the business makes a loss. Break-even is 150,000 / 200,000 = 75.00% of sales.
Example 2 (loss zone): sales of TRY 80,000 and break-even sales of TRY 100,000 give a margin of safety of −20,000.00 TRY and −25.00%; break-even share is 125.00%. Sales need to rise by at least TRY 20,000 to avoid a loss.
How to read the result: A positive amount is the part of sales above break-even; the percentage shows that if sales fall by that much, profit drops to zero. The break-even share shows how much of sales merely covers costs: at 75%, a quarter of sales is the profit buffer. Zero means exactly break-even, and a negative result means the loss zone. If you do not know break-even sales, divide fixed costs by the contribution margin ratio (break-even tool). A suitable margin varies by industry.
How to use
- Enter actual or planned sales for the period.
- Enter break-even sales for the same period.
- Press Calculate and read the margin in amount and percent.
Notes
Percentages and amounts are rounded HALF_UP to two decimals. Enter both figures for the same period and on the same VAT basis (excluding VAT).
Sources
Frequently asked questions
It depends on the industry; roughly 20-30% or more is considered comfortable and below 10% fragile to sales swings. This is a rule of thumb, not advice. For example, sales of 200,000 and break-even of 150,000 give a margin of 25.00%.
Fixed costs / contribution margin ratio, i.e. fixed costs / (1 − variable cost ratio). Use the break-even calculator or the fixed/variable split tool.
Actual sales are below break-even and the business is in the loss zone. The amount is the sales shortfall and the percentage its share of sales. For example, sales of 80,000 and break-even of 100,000 give −20,000.00 (−25.00%).
No. It measures the distance of sales from break-even; profit margin is profit divided by sales. Profit = margin of safety (TRY) × contribution margin ratio.
Enter both for the same period (for example the same month or year) and on the same VAT basis, excluding VAT. If the periods differ the margin is meaningless.
Next step
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