Break-Even Calculator

The break-even point (BEP) is the level of sales at which total revenue equals total costs — no profit, no loss. Below break-even: you're losing money. Above break-even: you're making profit. Formula: BEP (units) = Fixed Costs ÷ (Price per unit − Variable cost per unit). BEP (revenue) = Fixed Costs ÷ Contribution Margin Ratio. Example: Fixed costs $10,000/month, price $50/unit, variable cost $30/unit → BEP = 10,000 ÷ (50−30) = 500 units/month. Must sell 500 units just to break even.

Contribution margin = Selling price − Variable cost per unit. It's the amount each unit sale contributes toward covering fixed costs and profit. Contribution margin ratio = Contribution margin ÷ Price = (P − V) / P. Example: Price $50, variable cost $30 → Contribution margin = $20, ratio = 40%. For every $1 of sales, $0.40 goes toward fixed costs and profit. High contribution margin means faster break-even and higher profit potential at scale. Products with very low margins (grocery) need high volume; high-margin products (software) break even quickly.

Fixed costs: don't change with production volume. Rent, salaries, insurance, equipment leases, loan payments, website hosting. Even if you sell 0 units, fixed costs continue. Variable costs: change proportionally with production. Materials, direct labor, shipping, payment processing fees, sales commissions. At 0 units: $0. At 1,000 units: 1,000 × variable cost per unit. Semi-variable (stepped) costs: fixed up to a threshold, then jump — e.g., need another employee if you grow. For break-even analysis: classify costs as fixed or variable to get accurate results.

Break-even analysis helps answer: At what price do I need to break even at a given volume? How many units must I sell to justify a fixed cost investment? What happens to BEP if I change my pricing? Example: Considering raising price from $50 to $60. New contribution margin = $60 − $30 = $30. New BEP = $10,000 / $30 = 333 units (vs 500 at $50). At the same volume (500 units): profit = 500 × $30 − $10,000 = $5,000. Before: 500 × $20 − $10,000 = $0 (just breaking even). A $10 price increase converted a break-even business into a profitable one.

Margin of safety = Actual sales − Break-even sales (in units or revenue). Tells you how much sales can fall before you start losing money. Margin of safety % = (Actual − BEP) / Actual × 100%. Example: Selling 800 units, BEP at 500 units → margin of safety = 300 units = 37.5%. If sales drop by up to 37.5%, you're still profitable. High margin of safety = lower risk. Low margin of safety (< 10%) = precarious position. Operating leverage: businesses with high fixed costs and high contribution margins have high operating leverage — small sales changes create large profit swings.