Our UK tax calculators estimate the tax on self-employed profits, dividends, capital gains, company profits, savings, rent, company cars, council tax and more, using the current HMRC rates.
Every calculator on Poundsum is free, works on your phone, and runs in your browser, so the numbers you type are never sent to us. Each one explains how the result is worked out and links to the official GOV.UK source.
All tax calculators
- CalculatorSelf Employed Tax Calculator UKIncome Tax and Class 4 National Insurance on sole trader profits.
- GuideTax Code 1257L Explained: Meaning, M1, W1 and XWhat tax code 1257L means, emergency versions and when it is wrong.
- CalculatorCapital Gains Tax Calculator UKTax on gains from shares, property and other assets after the £3,000 allowance.
- GuideCouncil Tax Bands Explained: England, Scotland and WalesHow council tax bands work, the values for each band and how to check yours.
- CalculatorDividend Tax Calculator UKTax on dividends from shares or your own company after the £500 allowance.
- GuideSelf Assessment: Who Needs to File and How It WorksWho must file a tax return, what to include and how Self Assessment works.
- CalculatorCorporation Tax Calculator UKCompany tax with the 19% small profits rate, 25% main rate and marginal relief.
- GuideHow to Register for Self Assessment: Step by StepHow and when to register for Self Assessment and get your UTR.
- GuideSelf Assessment Deadline and How to Pay Your Tax BillEvery Self Assessment deadline, payments on account and how to pay.
- CalculatorTax on Savings Interest Calculator UKTax on bank and building society interest after the Personal Savings Allowance.
- CalculatorRental Income Tax Calculator UKLandlord tax on rent, with expenses and the 20% mortgage interest credit.
- CalculatorCar Tax Calculator UKVehicle Excise Duty for the first year and every year after, by CO2 and list price.
- CalculatorCompany Car Tax Calculator UKBenefit in kind tax on company and salary sacrifice cars, including electric.
- CalculatorCouncil Tax CalculatorYour yearly and monthly council tax for any band, with the single person discount.
- CalculatorNanny Tax Calculator UKThe full cost of employing a nanny: gross pay, employer NI and pension.
- CalculatorMarriage Tax Allowance CalculatorCheck if you can transfer £1,260 of allowance and save up to £252 a year.
How we keep the figures right
UK rates change every April, and sometimes in between. We check every figure against GOV.UK and HMRC when the new tax year starts and whenever the government announces a change. Each calculator page shows the date it was last checked.
Our results are estimates to help you plan. For decisions about your own money, check with the organisation involved or a qualified adviser. Read our disclaimer for more.