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Break-even calculator

Break-even Calculator

Find out how many units or projects you need to sell per period to cover your fixed costs — and how many more to hit a target profit.

Units to break even per month

67

£3,350.00 in revenue per month

Contribution per unit£30.00
Contribution margin60.00%
For £0.00 target profit

67 units / month

£3,350.00 in revenue

Each sale contributes £30.00 towards your fixed costs.

The formula

contribution = price − variableCost

breakEvenUnits = fixed ÷ contribution

targetUnits = (fixed + targetProfit) ÷ contribution

breakEvenRevenue = breakEvenUnits × price

Every unit you sell contributes the difference between price and variable cost towards your fixed costs. Once fixed costs are covered, every additional contribution is profit.

What counts as what

Fixed cost examples

  • Rent and utilities
  • Accountant and insurance
  • Software subscriptions
  • Salaries (including your own draw, if fixed)

Variable cost examples

  • Materials and packaging
  • Shipping and fulfilment
  • Payment processing fees
  • Platform fees (Etsy, Shopify)

Examples

Product business

Fixed £2,000/month · Price £50 · Variable £20 → Contribution £30 (60%) → 67 units / £3,350.

Service business with target

Fixed £2,000 · Price £50 · Variable £20 · Target profit £1,000 → 100 units / £5,000.

Questions

  • What is break-even point?

    Break-even is the number of units or revenue at which your total income exactly covers your total costs — no profit, no loss.
  • What are fixed costs?

    Costs that don't change with how much you sell — for example rent, insurance, software subscriptions, accountant fees, and any fixed salary you draw.
  • What are variable costs?

    Costs that scale with each sale — materials, packaging, shipping, payment processing fees, platform fees and per-job contractor fees.
  • What is contribution margin?

    The amount each sale contributes towards fixed costs after variable costs. It's the selling price minus the variable cost per unit.
  • Should VAT be included in break-even calculations?

    No — work in net (ex-VAT) figures. VAT is collected on behalf of HMRC; it isn't your revenue or your cost.
  • Why do you round break-even units up?

    You can't usually sell partial units. If the maths says 66.7, you need to sell 67 to actually cover your fixed costs.
PoundKit tools are for general information and planning only. They do not constitute accounting, tax, financial or legal advice. Please check with a qualified professional and refer to GOV.UK for official guidance.

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