The most basic viability test of any business: how much do we need to sell just to cover our costs? Above break-even, every dollar of incremental revenue starts contributing to profit. Below it, you're losing money on every sale.

Definition

Break-Even Point - the level of revenue (or unit volume) at which total revenue equals total costs - the business neither makes nor loses money. Below this point: a loss. Above: profit.

Formula
Break-Even Revenue = Fixed Costs ÷ Contribution Margin

Where Contribution Margin = 1 − (Variable Cost ÷ Revenue)

Example: $40K fixed costs, 65% contribution margin. Break-even = $40K ÷ 0.65 = $61.5K revenue.

Common uses

  • Pricing decisions - shows the impact of price changes on the required volume
  • Startup viability - is reaching break-even realistic with current assumptions?
  • Downturn planning - how far can revenue drop before you're losing money?

Watch out

Break-even doesn't account for cash timing. A business at break-even on the P&L can still have cash flow problems because of receivables and working capital.