Break-Even Point Calculator
Calculate the break-even point and target-profit volume from fixed costs and the selling price and variable cost per product or service.
Use the same period for fixed costs, target profit, and forecast units. For example, monthly fixed costs require a monthly target and monthly sales forecast.
Break-Even Analysis Basis and Limitations
Reference date and last reviewed: July 31, 2026
Calculation Basis
Uses fixed costs for one period and the selling price and variable cost per unit for a single product or service. Contribution margin covers fixed costs and target profit, and required volume is rounded up to the minimum whole unit.
Reference Limits
This linear model assumes constant prices and costs, so it cannot fully represent discounts, product mix, capacity, spoilage, step costs, taxes, or cash-flow timing. The result is an arithmetic planning estimate.
When to Confirm Officially
Before using the result for pricing, investment, or borrowing decisions, reconcile the inputs with actual financial statements and cost records. Review complex product mixes or cost structures with an accounting or finance professional.
Usage Tips
Compare required sales volume before changing your price
Start with your current price and costs, then change one assumption at a time. Comparing the forecast profit and margin of safety with the break-even volume can show how much room you have for a discount, a cost increase, or a higher profit target.
What is Break-Even Point Calculator?
The Break-Even Point Calculator estimates the sales volume where revenue equals total fixed and variable costs for a product or service. It uses fixed costs for one period, selling price per unit, and variable cost per unit to calculate contribution margin, contribution margin ratio, break-even units, and break-even sales. A target profit adds the minimum volume needed for that goal, while forecast units show projected revenue, total cost, operating profit, and margin of safety.
How to Use
- 1 Choose one analysis period, such as a month, quarter, or year, and total the fixed costs for that period.
- 2 Enter the selling price and the variable cost that increases with each additional product or service sold.
- 3 Optionally enter a target profit and forecast sales volume for the same period.
- 4 Review the minimum break-even units, break-even revenue, contribution margin, and contribution margin ratio.
- 5 Compare target units, forecast operating profit, and margin of safety before changing price, cost, or sales plans.
Follow contribution margin through target-profit volume
Last reviewed: July 31, 2026Break-even and target-profit formulas
Break-even units = fixed costs ÷ (price − variable cost); target units = (fixed costs + target profit) ÷ (price − variable cost)
The model assumes contribution margin from each unit covers fixed costs and then profit. Required volume is rounded up to a whole unit so the result does not remain below break-even or the target.
Fixed costs of 5,000 with a selling price of 50
- • Fixed costs for the period: 5,000
- • Selling price per unit: 50; variable cost per unit: 30
- • Target profit: 2,000; forecast unit sales: 400
- 1. Contribution margin per unit = 50 − 30 = 20
- 2. Contribution margin ratio = 20 ÷ 50 × 100 = 40%
- 3. Break-even units = 5,000 ÷ 20 = 250 units
- 4. Break-even sales revenue = 5,000 ÷ 0.40 = 12,500
- 5. Target units = (5,000 + 2,000) ÷ 20 = 350 units
- 6. Forecast profit at 400 units = 400 × 50 − (5,000 + 400 × 30) = 3,000
The minimum break-even volume is 250 units and break-even sales revenue is 12,500. A target profit of 2,000 requires 350 units. At 400 units, forecast operating profit is 3,000 and the margin of safety is 37.5%.
How to read the result
- A 40% contribution margin ratio means 0.40 of each revenue unit is available to cover fixed costs and profit.
- A forecast of 400 units is 150 units above break-even; under this simple model, volume could fall 37.5% before entering a loss.
- A higher target profit or fixed cost increases required volume, while a higher price or lower variable cost increases contribution margin and reduces required volume.
Conditions that change the result
- The model assumes constant price and variable cost across the sales range and assumes all produced units are sold.
- It does not automatically model product mix, tiered discounts, capacity limits, spoilage, taxes, financing costs, or cash-flow timing.
- If labor, equipment, or supplier pricing changes at certain volume thresholds, recalculate each relevant operating range.
Common input mistakes
- Do not mix monthly fixed costs with an annual target profit or sales forecast.
- Do not enter total variable costs for the period in the per-unit field.
- Keep price and cost consistently tax-inclusive or tax-exclusive.
- Do not use a simple average of prices and costs for a multi-product business with different sales volumes.
Reference Knowledge
- ● Contribution margin per unit = selling price per unit − variable cost per unit
- ● Contribution margin ratio = contribution margin per unit ÷ selling price per unit × 100
- ● Break-even units = fixed costs ÷ contribution margin per unit
- ● Theoretical break-even sales revenue = fixed costs ÷ contribution margin ratio
- ● Revenue at minimum units = rounded-up break-even units × selling price per unit
- ● Target-profit units = (fixed costs + target profit) ÷ contribution margin per unit
- ● Required units are rounded up to the minimum whole unit when products or services cannot be sold fractionally.
FAQ
Q. Which costs belong in fixed costs?
Include costs that remain for the analysis period regardless of sales volume, such as rent, fixed salaries, insurance, subscriptions, and depreciation. Allocate quarterly or annual costs to the chosen period and separate costs that rise with volume.
Q. What belongs in variable cost per unit?
Include costs that rise when one more unit is sold, such as materials, packaging, marketplace fees, payment fees, and per-unit delivery. If a selling fee is a percentage of revenue, convert it to a per-unit amount using the current price.
Q. Why are required units rounded up?
If the formula produces 250.2 units, selling 250 whole units does not fully cover fixed costs. Under a whole-unit assumption, 251 is the minimum volume that avoids a loss. The primary revenue uses this minimum whole-unit volume, while the continuous-volume formula is labeled as theoretical revenue.
Q. Can I use this for a business with several products?
A single-product formula is not exact when products have different prices and margins. If the sales mix is stable, calculate a weighted-average contribution margin separately, or analyze each product on its own.
Q. What does a negative margin of safety mean?
Forecast volume is below break-even. Compare realistic options such as raising price, reducing variable cost, adjusting fixed cost, or increasing sales volume.
Q. Does the calculation include sales tax or income tax?
No tax is added automatically. Use a consistent tax-inclusive or tax-exclusive basis for price and costs, and review income or corporate tax separately because it is generally calculated after operating profit.
