IRR / NPV Calculator
Find the real annual return of a business investment, and whether it clears your bar.
Open calculatorIncome & Business
Enter your fixed costs and per-unit economics to see exactly how many sales it takes to break even each month.
Every sale contributes a little toward covering your fixed costs — that contribution is your price minus the variable cost of delivering one unit. Break-even is the point where enough of those contributions have added up to cover your fixed costs exactly; every sale after that is profit.
Note: this measures a business's break-even point in unit sales — a different question from a trader's breakeven price on a single position.
If your break-even number feels out of reach at your current sales pace, you have three levers: raise the price, lower the variable cost per unit, or cut fixed costs. Small price increases often move the number more than people expect, since the entire increase drops straight into your margin.
This model excludes one-time startup costs (equipment, initial inventory, licensing) — it measures ongoing monthly profitability, not how long it takes to recoup your original investment.