Break-Even Calculator

The break-even point in units is: Fixed Costs ÷ (Price per Unit − Variable Cost per Unit). The denominator is the contribution margin per unit — the amount each sale contributes toward covering overhead. Once total contribution equals total fixed costs, you break even. In sales revenue terms: Break-Even Revenue = Fixed Costs ÷ Contribution Margin Ratio, where the ratio is (Price − Variable Cost) ÷ Price.

Fixed costs stay constant regardless of how many units you sell — rent, equipment depreciation, salaried employees, insurance and software subscriptions are typical examples. Variable costs scale directly with output — raw materials, packaging, per-unit commissions, and direct labour paid per piece are variable. Some costs are semi-variable (utilities, for instance), which you must split or approximate before using the CVP model.

The contribution margin per unit is Price − Variable Cost per Unit. It tells you how much each sale 'contributes' toward paying off the fixed-cost burden before any profit appears. Dividing total fixed costs by the contribution margin per unit gives you exactly how many units you need to sell to cover those overhead costs — that is the break-even quantity. The contribution margin ratio expresses the same idea as a fraction of revenue (useful for the revenue form of the formula).

Break-Even Revenue = Fixed Costs ÷ Contribution Margin Ratio. The contribution margin ratio is (Price − Variable Cost) ÷ Price. Alternatively, multiply break-even units by the price per unit — both give the same answer. For example, $2,400 in fixed costs, $24 price, $9 variable cost: CM = $15, CM ratio = 62.5%, break-even revenue = $2,400 ÷ 0.625 = $3,840 (also 160 units × $24).

To find how many units you must sell to achieve a specific profit, extend the formula: Target Units = (Fixed Costs + Target Profit) ÷ Contribution Margin per Unit. Setting Target Profit to zero gives the standard break-even. Setting it to, say, $10,000 tells you how many units deliver exactly that profit after covering all fixed and variable costs.

Always round up to the next whole unit. Selling 160.3 units is impossible — selling 160 units leaves a tiny shortfall, while selling 161 units just crosses the break-even line. The calculator shows the exact mathematical result (which may be fractional); the 'units needed' headline rounds up because that is the practical minimum to actually cover costs.

If the price per unit is less than or equal to the variable cost per unit, the contribution margin is zero or negative — meaning each unit sold either contributes nothing or actually increases your loss. There is no volume at which you can break even; the product is structurally unprofitable at that price. The calculator will display a 'no break-even' message rather than a nonsensical negative or infinite number.

Yes. Replace 'unit' with your billing unit — an hour of consulting, one therapy session, one subscription seat, or any other discrete service. Fixed costs are your overhead (office, staff salaries, SaaS subscriptions); variable cost per unit is the direct cost of delivering that service (freelancer fees, payment processing, per-session materials). The math is identical.

The standard CVP break-even is a pre-tax, single-period model. It does not include income tax, VAT or GST on revenues or costs. For an after-tax target, you can inflate the target-profit input: if you need $10,000 after 30% tax, set target profit to $10,000 ÷ (1 − 0.30) = $14,286. This is an approximation — a tax adviser should review the full picture.

The single-product CVP model works for multiple products if you assume a fixed sales mix. Compute a weighted-average contribution margin per unit (or ratio) across the mix, then divide total fixed costs by that weighted figure. If the mix changes significantly with volume (for example, a volume discount shifts customers toward a lower-margin product), you need a more sophisticated multi-product model.

There is no universal 'good' ratio — it varies enormously by industry. Software and digital products often have ratios above 70–80% because variable costs are near zero. Manufacturing and retail commonly range from 20–50%. Service businesses fall across the full spectrum. What matters is whether the ratio is high enough that achievable sales volume can cover your specific fixed-cost base — which is exactly what this calculator tells you.

The CVP model is a planning estimate, not a forecast. It assumes prices, volumes and cost structures are linear and stable — which rarely holds perfectly in practice. Volume discounts, step-fixed costs (like hiring a second production shift), price elasticity and seasonal patterns all cause deviations. Use break-even as a minimum-viable-sales benchmark and a sensitivity-analysis starting point, not as a precise profit model.

The margin of safety measures how far your actual (or expected) sales sit above the break-even point — it is your cushion before losses begin. In units: Margin of Safety = Actual Sales − Break-Even Units. As a ratio: Margin of Safety Ratio = (Actual Sales − Break-Even Units) ÷ Actual Sales × 100%. A ratio of 30% means sales can fall by 30% before you start losing money. Higher is better; a margin below 10–15% signals significant business risk.