UK Business Calculators

Running a business means keeping an eye on margins, costs and your tax position. These calculators cover the numbers that matter day to day — from pricing to paying yourself.

Profit margin and break-even

The profit margin calculator shows your gross or net margin as a percentage, so you can see how much of each sale you keep. The break-even calculator tells you how much you need to sell to cover your costs — the point at which you stop losing money.

Corporation tax

If you're a limited company, corporation tax applies to your taxable profits. The corporation tax calculator gives an estimate for the current rate, and the guide explains how profits, expenses and reliefs affect the figure.

Employer costs and salary vs dividend

When you employ staff (or yourself) there's employer National Insurance and pension contributions to budget for. The employer NI calculator shows that cost, and the salary-vs-dividend calculator compares paying yourself a salary, dividends, or a mix.

Freelancer day rate

If you work freelance, the day-rate calculator converts an annual income target into a daily rate after accounting for non-working days and costs, so you can quote confidently.

Frequently asked questions

Should I be a sole trader or a limited company?

It depends on your income, tax position and how you want to be paid. The sole-trader-vs-limited-company guide compares the main differences.

Are these estimates or exact figures?

They're estimates based on published rules for the tax year selected. Your actual position depends on your expenses, reliefs and personal circumstances.