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Break-Even Calculator for Small Businesses | HelloBooks Free break-even calculator: enter fixed costs, price and variable cost to see how many units and how much revenue you need each month to break even. No signup.

Free tool · Planning

Break-even calculator

Enter your monthly fixed costs, your price and the variable cost of each unit or job. See your contribution margin and the sales you need each month to cover your costs.

Free Plan with unlimited invoices, bills & quotes — no credit card.

Contribution margin per unit$30.00 (60.0%)

Break-even units per month167

Break-even revenue per month$8,350.00

Compare real monthly sales and costs with your break-even point: HelloBooks Free runs your P&L at any time, $0.

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The break-even formula

Break-even units = fixed costs / (price - variable cost per unit). The gap between price and variable cost is the contribution margin: what each sale contributes toward rent, salaries and other fixed costs. Every sale after break-even adds its full contribution margin to profit.

Fixed costs stay the same whatever you sell (rent, insurance, software, salaried staff). Variable costs rise with each sale (materials, shipping, card fees, commissions).

Check the plan against your real numbers

A break-even figure is only useful if you compare it with what actually happened. HelloBooks Free builds your P&L from a live bank feed so you can see monthly sales and costs at any time. $0, no credit card.

How teams use HelloBooks

What HelloBooks does for businesses like yours

“AI categorizes every transaction automatically and learns from your corrections, so a small team keeps clean books without spending evenings on manual data entry.”
Small business · US
“For a practice managing dozens of client books, automated reconciliation turns a full day of matching into a background task — review the AI matches, approve, and move on.”
Accounting practice · US
“Snap a receipt on your phone and the AI reads, categorizes, and files it — bookkeeping stays current even for people who would rather not think about numbers.”
Freelancer · mobile-first

Illustrative scenarios describing what the product does for each business type — not attributed customer reviews.

FAQ

Frequently asked questions

What is a good contribution margin?
It depends on the industry. Service businesses often have high margins; resellers lower ones. What matters is that total contribution covers fixed costs with room to spare.
How do I lower my break-even point?
Raise prices, cut variable cost per unit, or reduce fixed costs. The calculator shows the effect of each change instantly.
Is my data saved?
No. The calculator runs in your browser and nothing you type is sent anywhere.

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    Break-Even Calculator for Small Businesses | HelloBooks