What is the Break-Even Calculator?
The Break-Even Calculator determines how many units you must sell to cover all costs. It divides total fixed costs by the unit contribution margin (price minus variable cost). This is a fundamental business planning tool used in pricing strategy, fundraising, and operational planning.
How does it work?
Enter your fixed costs such as rent, salaries, and insurance. Enter your price per unit and variable cost per unit. The calculator subtracts variable cost from price to find your contribution margin per unit, then divides fixed costs by that margin to find the break-even point.
Formula
fixed costs / (price - variable cost)
How the calculation works
How the calculation works
- 1Enter fixed costs, price per unit, and variable cost per unit.
- 2Compute contribution margin: price minus variable cost per unit.
- 3Divide fixed costs by contribution margin.
- 4Result is the number of units you must sell to cover all costs.
Worked example
Worked Example
A fictional project management SaaS called Deskly plans a new premium tier at $99 per account per month, with $22 per account in hosting and support variable costs and $50,000 in monthly fixed costs.
- 1Contribution margin = $99 - $22 = $77 per unit.
- 2Break-even units = $50,000 / $77 = 649.35 units.
- 3Deskly needs about 650 accounts per month to cover all fixed and variable costs.
- 4Every account beyond 650 contributes $77 of pure profit toward operating margin.
Result
Deskly must sell approximately 649.35 (about 650) premium accounts per month to break even; every account beyond that adds $77 of gross profit.
Interpretation guide
How to read your result
You cover fixed costs quickly with modest volume, leaving room to fund growth and absorb early churn.
Push aggressive sales and marketing to overshoot the break-even point and build a profit buffer.
A realistic target for a mid-market or SMB SaaS tier; this is where most healthy pricing sits.
Monitor contribution margin monthly and reprice or cut variable costs if margins erode.
Your fixed costs are heavy relative to unit margin, so small sales shortfalls quickly produce losses.
Raise price, reduce fixed costs, or lower variable costs before scaling spend.
The math is unsustainably tight or negative because you cannot cover variable costs per unit.
Reprice immediately or redesign delivery to cut per-unit costs before you grow into a bigger loss.
Common mistakes
- - Forgetting to include semi-variable costs that change with volume but not linearly
- - Using unit price before accounting for discounts, refunds, and chargebacks
- - Not recalculating break-even when costs or prices change
Practical tips
Practical tips
Use monthly fixed costs, not annual, so break-even units line up with your monthly sales target.
If you offer annual plans, convert them to monthly-equivalent revenue before comparing to break-even.
Recalculate break-even whenever you change pricing, hire, or renegotiate any fixed contract.
Segment break-even by tier or plan since contribution margin differs across products.
Track break-even units as a percentage of market size; anything above 50% means you need much better conversion.
When should you use it?
- - Setting pricing strategy for a new product launch
- - Planning production volume targets for manufacturing
- - Evaluating the financial feasibility of a new business line
- - Determining the sales target needed to sustain operations
Benefits
- - Reveals the minimum sales volume needed to avoid losses
- - Helps evaluate pricing changes and their impact on profitability
- - Provides a clear target for sales and production teams
Step-by-step example
List all fixed costs that do not change with production volume. Determine your selling price per unit and the variable cost per unit. Subtract variable cost from price to get contribution margin. Divide fixed costs by contribution margin to find the number of units needed to break even.
Real-world example
A hardware startup has $50,000 in monthly fixed costs, sells each unit for $99, and spends $22 on variable costs per unit. They need to sell approximately 650 units per month to break even. Every unit beyond that is profit.