Free UK Finance & Accountancy Calculators
Simple tools to help you understand your salary, tax, VAT, savings, business finances and everyday money.
Calculator categories
Whatever money question you have, there's a calculator for it. Everything is free, instant and explained in plain English.
Salary & Tax
Take-home pay, income tax, National Insurance and pay rises.
View calculatorsVAT
Add or remove VAT, invoice totals and profit after VAT.
View calculatorsBusiness & Self-Employed
Profit, expenses, corporation tax, dividends and day rates.
View calculatorsMortgage & Property
Mortgage payments, stamp duty, rental yield and deposits.
View calculatorsSavings & Investments
Compound interest, ISA growth, emergency funds and inflation.
View calculatorsPersonal Finance
Budgets, loans, discounts, percentages and everyday money.
View calculatorsCost of Living
Budgets and day-to-day living costs in the UK.
View calculatorsHealth & Lifestyle
BMI, calories, water intake and lifestyle estimates.
View calculatorsFeatured calculators
Start with the tools people use most — from take-home pay to stamp duty.
Salary Calculator
See your annual, monthly and weekly take-home pay with a full income tax and National Insurance breakdown.
Use calculatorSelf-Employed Tax Calculator
See what tax and National Insurance you pay as a sole trader, and your profit after tax.
Use calculatorVAT Calculator
Add or remove VAT, see the VAT amount and the VAT-inclusive or VAT-exclusive price.
Use calculatorMortgage Calculator
Estimate your monthly repayments, total interest and loan-to-value on a UK mortgage.
Use calculatorSavings Calculator
Project how your savings grow with monthly contributions and compound interest over time.
Use calculatorIncome Tax Calculator
See how much Income Tax you pay and how it falls across the tax-free, basic, higher and additional rate bands.
Use calculatorDividend Tax Calculator
Work out the tax on your dividends — the £500 allowance and the 8.75%, 33.75% and 39.35% rates.
Use calculatorLoan Calculator
See your monthly payment, total interest and a year-by-year balance for a fixed-rate loan.
Use calculatorStamp Duty Calculator
Work out the Stamp Duty Land Tax you owe when buying a home in England or Northern Ireland.
Use calculatorStudent Loan Calculator
See how much of your income goes to student loan repayments, based on your plan and earnings.
Use calculatorNational Insurance Calculator
Work out your Class 1 employee National Insurance contributions and what you keep after NI.
Use calculatorPercentage Calculator
Three quick percentage tools: percentage of an amount, comparing amounts and percentage change.
Use calculatorHonest numbers, plain English
Official UK rates
Tax thresholds and allowances are data-driven and updated each tax year, with links to GOV.UK and HMRC.
The formula is shown
Every calculator shows how the result is calculated, the assumptions it makes and a worked example.
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UK money & accountancy guides
Clear, jargon-free guides covering tax, business and everyday personal finance.
How UK Income Tax works
The tax-free allowance, rate bands and how PAYE takes tax from your pay.
Read the guide TaxWhat is National Insurance?
Why NI is separate from Income Tax and what it pays for.
Read the guide BusinessHow VAT works
When to register, what to charge and how to reclaim VAT.
Read the guide Personal FinanceHow to create a budget
A simple 50/30/20-style budget you can stick to.
Read the guide Personal FinanceBuilding an emergency fund
Three to six months of costs — and how to get there.
Read the guide Personal FinanceUnderstanding mortgages
Terms, rates, fees and the questions every buyer should ask.
Read the guide