Gift Aid calculator
Free Gift Aid calculator: see how much a charity reclaims on a donation (25%) and the extra tax relief higher and additional-rate donors can claim back.
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Free tax & money calculators for charities and social enterprises
Quick, honest estimates using 2026/27 rates — no sign-up, no catch. When you want the exact number for your situation, we're one message away.
Employer cost of hiring calculator
Work out the true cost of a hire beyond salary: employer National Insurance, auto-enrolment pension and the Employment Allowance — for UK employers in 2026/27.
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VAT calculator
Free UK VAT calculator: add VAT to a net figure or remove VAT from a gross figure at 20%, 5% or 0%. Plus the £90,000 registration threshold explained.
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What these calculators assume
- You live in England, Wales or Northern Ireland
- Scotland sets its own income tax rates and bands on earned income. If you live there, the income tax figure will be wrong — use the Scottish option where a calculator offers one, and ask us where it doesn't.
- A full tax year
- Start or stop part-way through a year and your allowances are not used the way these sums assume. The answer will usually be too high.
- One source of income
- A second job, a pension, rental income or savings interest all stack on top and can push you into a higher band — or into the £100,000 range where the personal allowance is withdrawn.
- Nothing unusual in your situation
- Student loan repayments, the High Income Child Benefit Charge, salary sacrifice, a company car, marriage allowance. Each one moves the number, and none of them fits in a five-field form.
These are the four things that most often make a quick estimate land a long way from the real bill.
Using an estimate
How to act on one of these numbers
- Use it to set money aside, not to plan a purchase. Round the answer up, move that much into a separate account, and forget it. Most people who get caught out had the right number and never moved the money.
- Run it again when something changes. A pay rise, a new contract, a first employee, crossing the VAT threshold. Each of those changes the answer, and none of them announces itself.
- Compare two versions of a decision, not one. These tools are at their most useful run twice — salary at one level and then another, or before and after a hire — because the difference between two estimates is far more reliable than either estimate on its own.
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