How Do I Figure Out My Break-Even Point?

Your break-even point is your fixed costs divided by your contribution margin per sale — the price of one sale minus what it costs you to deliver it. If your monthly fixed costs are 5,000 dollars and you make 50 dollars of margin per sale, you break even at 100 sales a month. Below that you lose money; above it, you profit.

Most owners run their business without ever knowing this number. They just hope each month works out. That's not a strategy — it's a guess wearing optimism as a disguise.

Your break-even point is the floor everything else stands on. Know it, and a hundred decisions get easier.

The two costs you need to separate

Break-even math depends on splitting your costs into two buckets, and most confusion comes from blending them. Fixed costs stay roughly the same no matter how much you sell — rent, salaries, software, insurance. Variable costs rise with each sale — materials, shipping, transaction fees, contractor time.

The gap between your price and your variable cost per sale is your contribution margin. That margin is what each sale contributes toward covering your fixed costs. Once you've covered them all, every additional sale's margin is profit. That single distinction is the whole engine of the calculation.

If you don't know your break-even number, you're not running a business. You're hoping one shows up.

Working through a real example

Say your fixed costs are 6,000 dollars a month. You sell a service for 200 dollars and it costs you 80 dollars in variable costs to deliver, so your contribution margin is 120 dollars. Divide 6,000 by 120 and you break even at 50 sales a month. Sale 51 is where profit begins.

The first time I sat an owner down and we ran this, his break-even came out far higher than he'd assumed — he'd been mentally counting revenue, not margin. Suddenly his pricing and his sales targets both made sense for the first time. The number didn't just inform decisions; it reframed how he saw every month.

How to calculate yours

1. Add up monthly fixed costs. Rent, salaries, software, insurance — everything that stays the same regardless of sales.
2. Find your variable cost per sale. Materials, fees, and labor tied directly to delivering one unit or job.
3. Calculate contribution margin. Subtract variable cost per sale from your price. That's what each sale contributes.
4. Divide fixed costs by margin. Fixed costs divided by contribution margin equals the sales you need to break even.
5. Check it against reality. Compare that number to your actual monthly sales to see how much cushion or gap you have.

That's the entire calculation — five minutes with a calculator gives you a number that should anchor your pricing, your sales goals, and your sense of how much margin for error you really have. If you want a sharper read on the numbers behind your business, a free Growth Audit is a good place to start.

What to do with the number

Break-even isn't a one-time trivia answer — it's a decision tool. Use it to set a minimum monthly sales target, to test whether a price change actually helps (raising margin lowers your break-even fast), and to know how risky a new hire or higher rent really is before you commit. When you're weighing any big cost, recalculate your break-even with it included and you'll see the real impact instantly. Building that kind of clear, numbers-first thinking into how you operate is central to how we work.

Quick wins you can try this week

• List every fixed cost that hits your business each month and total it.
• Work out exactly what it costs you in variable terms to deliver one sale or job.
• Subtract that from your price to get your real contribution margin per sale.
• Divide fixed costs by margin to get your break-even number, then compare it to last month's actual sales.
• Recalculate your break-even with a small price increase to see how much it lowers the floor.

FAQ

What's the simplest break-even formula?

Fixed costs divided by contribution margin per sale, where contribution margin is your price minus the variable cost to deliver one sale. The result is the number of sales you need each month just to cover costs. Everything above that line is profit.

What counts as a fixed versus variable cost?

Fixed costs stay roughly constant regardless of sales volume, like rent, salaries, and software subscriptions. Variable costs rise with each sale, like materials, shipping, and transaction fees. Splitting them correctly is the most important step, since blending them throws off the whole calculation.

How does raising prices change my break-even?

Raising your price increases your contribution margin per sale, which lowers the number of sales you need to break even. Even a small price increase can meaningfully reduce your break-even point. That's why pricing is one of the fastest levers for making a business more resilient.

How often should I recalculate it?

Recalculate whenever your costs or prices change, and at least once a quarter. A new hire, a rent increase, or a pricing change all move your break-even point. Keeping the number current means you always know the real floor your business has to clear.

Want help making sense of the numbers that drive your business? A free Growth Audit reviews your model and shows you where the leverage is.