Break-Even Calculator

The break-even point is the sales level at which revenue exactly covers costs — the line between losing money and making it. Everything below it is a loss, everything above it is profit, and knowing where it sits tells you what the business must do simply to survive.

The calculation rests on two kinds of cost. Fixed costs stay the same whatever you sell: rent, salaries, insurance, subscriptions. Variable costs rise with each unit sold: materials, packaging, payment fees, delivery. Subtract the variable cost from the price and you have the contribution margin — the amount each sale gives you toward covering the fixed costs. Divide the fixed costs by that contribution and you have the break-even quantity.

The contribution margin is the number that matters most. A healthy margin means each sale contributes a lot and the break-even point is low. A thin margin means you need enormous volume just to stand still. This is why low-margin businesses are fragile: a small rise in costs or a small fall in price can push the break-even point out of reach.

Beyond a single figure, the break-even analysis shows sensitivity. Raise the price and the break-even falls; raise your own costs and it rises. Comparing scenarios makes clear where the leverage lies — often it is on the cost side, where a supplier negotiation can be worth more than months of extra sales.

The margin of safety is the practical output: how far sales can drop before you cross the line. A thin margin of safety means the business is living close to the edge, and a bad quarter could sink it. The calculation assumes costs are either cleanly fixed or cleanly variable, which reality rarely honours, so treat it as a model rather than a report. This is a planning tool, not accounting or financial advice.

This calculator returns estimates for general information only. It is not financial, investment, tax or legal advice, and it cannot replace guidance from a qualified professional who knows your circumstances. Figures such as loan payments, investment growth and retirement projections are simplified models based on the inputs and assumptions you provide, not guarantees of future results.