Break-even Calculator

Free tool

Break-even Calculator

Work out how many customers, subscriptions or units you need each month before the business starts making money — and how many more it takes to hit a profit target.

Currency

Monthly fixed costs

Rent, salaries, software, insurance — anything you pay whether you sell or not.

Price per customer / unit

Average monthly subscription or sale value.

Variable cost per unit

Hosting, materials, payment fees, delivery, support time.

Monthly profit target

Optional — what you want left over after costs.

Sense check

You keep £40.00 of every sale (81.6% contribution margin) to put towards fixed costs and profit.

Customers needed to break even

100

Revenue at break-even: £4,900
Customers to hit profit target: 150

Contribution per sale

£40.00

Contribution margin

81.6%

Sales per week

Sales per day

3.3

Revenue at profit target

£7,350

Monthly fixed costs

£4,000

Break-even = fixed costs ÷ (price − variable cost). Figures are monthly and exclude VAT and tax. If your customers stay for several months, pair this with the LTV calculator so you can judge how much you can afford to spend winning them.

Work out how many customers, subscriptions or units you need to sell each month before the business covers its costs — and how many more it takes to reach a profit target. Uses fixed costs, price per sale and variable cost per sale to show your contribution margin, break-even volume and the revenue that goes with it.