Tools
Break-even calculator: sales to cover costs
How many sales a month do you need to break even?
Enter three numbers — your monthly fixed costs, your average price per sale, and the variable cost of each sale — and see the sales volume and revenue where you stop losing money and start covering costs. It’s plain arithmetic on your own figures, not advice: nothing is sent anywhere, and a QuickBooks® ProAdvisor can help you act on it.
ToolsBreak-Even CalculatorBy TechBrot2026-10-21
§ TL;DR
Break-even is the point where your contribution margin (price minus variable cost per sale) covers your fixed costs. This tool does that one calculation on your own numbers: break-even sales per month and the revenue that implies. It’s a model of your inputs, not financial advice — and it runs entirely in your browser.
If the assumptions need pressure-testing, a fractional CFO conversation is the next step.
§ 01 · The calculator
Find your break-even point.
Enter your figures; the result updates as you type. Your figures are worked out in your browser and are never sent to us. Our analytics records that the tool was used and which field you changed, never what you typed. Nothing else is sent until you decide to book a call.
Break-even volume
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Enter your monthly fixed costs, price per sale, and variable cost per sale above.
§ 02 · No black box
How break-even is calculated.
Break-even is the sales volume at which total revenue exactly covers total costs — the point where you stop losing money. The math has two steps. First, contribution margin per sale = price − variable cost per sale: the dollars each sale contributes toward fixed costs after covering its own variable cost. Second, break-even sales = fixed costs ÷ contribution margin, rounded up to whole sales. Multiply by price for break-even revenue.
If the contribution margin is zero or negative, there is no break-even at any volume — each sale loses money, so selling more makes the hole deeper. The tool says so plainly rather than printing a misleading number. That case usually means a price increase or a variable-cost cut, which is exactly the kind of thing a fractional CFO engagement models.
This is a single-product, steady-state model. Real businesses have product mixes, seasonality, and costs that step up at certain volumes. The calculator is a fast sanity check on your own figures — not a forecast, and not advice.
STEP 1
Your own numbers
in your browser
STEP 2
Break-even figure
instant, open math
STEP 3
Free discovery call
30 min · no obligation
STEP 4
A pricing & margin plan
on your real books
§ 03 · Related
Where to go next.
§ 04 · Questions
Questions about break-even.
Does this calculator store or send my numbers?
No. The calculation runs in your browser, using only the figures you type, and those figures are never sent to us. Like the rest of the site, the page reports to our analytics that the tool was used and which field you changed, never what you typed. Nothing is stored on our side unless you choose to book a call and tell us yourself. You do not have to give us your name or email to use it.
Why did it say ‘no break-even’?
Because your price per sale didn’t cover its own variable cost — contribution margin was zero or negative. When that’s true, selling more units increases your loss, so there is no volume at which you break even. The fix is a higher price or a lower variable cost per sale, not more sales.
Is this single-product break-even?
Yes. It models one price and one variable cost. If you sell a mix of products at different margins, the real break-even depends on your sales mix, which this simple tool can’t capture. A fractional CFO can build a weighted, multi-product model for you.
How accurate is the result?
It’s exact for the inputs you give — it’s just arithmetic. Its usefulness depends on how accurately you split fixed vs variable costs and whether your costs are truly linear. Treat it as a sanity check on your own numbers, not a forecast or advice.
Make the number real