5 Ways to Calculate Your Break-Even Point
Five ways to calculate the break-even point: the BEP formula, contribution margin, sales-revenue method, the graphical method, and target-profit reverse solving — with a worked example.
Your break-even point answers “how much do I need to sell to stop losing money?” Here are five ways to find it, from most-used to most visual.
Notation: fixed costs F (rent, salaries — incurred regardless of sales), unit price P, variable cost per unit V (stock, packaging, shipping).
Method 1: the formula
BEP units = F ÷ (P − V)
Example: F = $10,000/month, P = $50, V = $30. BEP = 10,000 ÷ 20 = 500 units. Unit 501 earns $20 of pure contribution.
Method 2: contribution margin
Contribution per unit = P − V = $20; contribution ratio = 20 ÷ 50 = 40%. BEP units = F ÷ contribution per unit — same math, but the ratio view shines when you run multiple products and want to rank them by what they contribute.
Method 3: revenue method
Break-even revenue = F ÷ contribution ratio = 10,000 ÷ 40% = $25,000. Useful when you haven’t finalized pricing but know your rough margin.
Method 4: the graph
Plot total revenue (P × Q) and total cost (F + V × Q) against volume; the intersection is your break-even point. The best way to explain to a team or investor why you need volume first.
Method 5: reverse for a target profit
Units for target = (F + target profit) ÷ (P − V)
Want $5,000/month profit: (10,000 + 5,000) ÷ 20 = 750 units. From “survive” to “hit the goal”.
Three practical warnings
- P must exceed V — otherwise there is no break-even point, just a faster loss
- E-commerce: fold platform commissions and ad spend into V or F before computing
- Recalculate whenever fixed costs change (new lease, new hire)
Skip the arithmetic with the break-even calculator: three inputs give break-even units, break-even revenue, and the volume needed for any target profit.