Break-Even Point Calculator
How many units or billable hours you must sell before you stop losing money.
How This Calculator Works
Break-even analysis answers one critical question: How many sales do you need before you stop losing money?
The Formula:
Break-Even Units = Fixed Costs ÷ (Price per Unit - Variable Cost per Unit)
Breaking It Down:
Fixed Costs: These are expenses you pay regardless of sales—rent, salaries, insurance, software subscriptions. If you sell 0 units or 10,000 units, these costs stay the same (at least in the short term).
Variable Costs: These change with each sale—materials, shipping, payment processing fees, production labor. Sell 100 units? You pay 100× the variable cost. Sell 0 units? Variable costs are £0.
Contribution Margin: Price minus variable cost. This is how much each sale "contributes" toward covering your fixed costs. Once fixed costs are covered, contribution becomes pure profit.
Example: If fixed costs are £5,000/month, you sell at £50, and variable costs are £20 per unit, your contribution is £30. Break-even = £5,000 ÷ £30 = 167 units. Sell 166 units? You're still losing money. Sell 168? You're profitable.
When to Use This Calculator
Starting a New Business:
Before launching, calculate how many sales you need to survive. If break-even requires 500 units/month but you can only realistically sell 200, you know the business model needs adjusting before you start.
Testing New Products:
Will a new product line be viable? Calculate its break-even point. If it's too high relative to expected demand, don't launch it.
Pricing Decisions:
See how different prices affect your break-even point. Sometimes a 10% price increase cuts break-even by 25%, making the business much safer.
Cost Reduction Analysis:
If you negotiate rent down £500/month, how many fewer sales do you need? The calculator shows you the impact instantly.
Hiring Decisions:
Thinking of hiring someone for £30,000/year? That raises fixed costs. How many additional sales do you need to cover that cost?
Investment Planning:
If you invest in equipment that cuts variable costs (e.g., from £10 to £7 per unit), but raises fixed costs (loan payment), does your break-even point improve or worsen?
Freelancers & Consultants:
Treat each billable hour as a "unit." Calculate how many hours you need to bill each month to cover your fixed costs (software, coworking space, insurance, your minimum living expenses).
Frequently Asked Questions
What if I sell multiple products with different prices?
You have three options: (1) Calculate break-even for each product separately, (2) Use a weighted average based on your sales mix (e.g., 60% product A at £50, 40% product B at £30 = £42 average), or (3) Calculate break-even in revenue terms instead of units (£ revenue needed to break even).
Should I include my own salary in fixed costs?
Yes, if you pay yourself a regular amount regardless of sales. If you only take profit distributions (pay yourself after all costs are covered), then your "break-even" is the point where the business covers costs but you make £0—which isn't really breaking even. Include a minimum salary you need to survive.
What's a "safe" break-even point?
Your break-even should be 40-60% of your realistic maximum capacity. If you can sell 500 units/month max, break-even should be around 200-300 units. This gives you profit potential and a buffer. If break-even is 450 units, your business model is too risky.
How do I handle seasonal businesses?
Calculate break-even for high and low seasons separately. If you're a tax accountant busy Jan-April, your fixed costs span 12 months, but you might earn 70% of revenue in 4 months. You need high-season break-even to cover low-season fixed costs too.
What if my variable costs include percentages?
Convert them. If you sell on a platform charging 15%, and your item is £100, variable cost includes £15 platform fee. If payment processing is 3% + £0.30, that's £3.30 per unit. Add all percentage-based costs as fixed amounts per unit.
Can break-even be negative?
No. If the calculator shows negative or impossible numbers, check: (1) Is variable cost higher than price? (You lose money on every sale), (2) Did you input fixed costs as negative?, or (3) Are your units wrong (e.g., annual costs but monthly sales)?