KiQiCulators: free UK tax calculators
Quick, free tax calculators from KiQi Chartered Certified Accountants. Put in your own numbers and see the answer straight away, with every step of the working shown.
- Free and private. Nothing you type leaves your browser.
- For the UK only. Rates for England, Wales, Scotland and Northern Ireland. Pick where you live and the income tax rates change to match.
- Shows the working. Every figure is broken down, so you can check it, and the What if? box shows how to cut the tax you lose.
Should I leave my job? Employed vs self-employed vs limited company
Compare your job with working as a sole trader (with or without CIS) or through your own limited company, and see the day rate you need to earn the same.
Try it →More KiQiCulators
More KiQiCulatorsTwo directors: £12,570 each or £30,000 each?
Two directors in one company, such as a couple: compare small salaries plus dividends with bigger salaries, and see the money left for the family and the total tax paid.
Open →Self-employed or limited company?
The same work two ways: sole trader against your own Ltd company, with running costs, use of home, CIS, rent and savings, the total tax each way and the point where a company starts to pay.
Open →Payslip and salary calculator 2026/27
See what you take home after income tax, National Insurance, student loan and pension. Compare two salaries side by side.
Open →P60 and tax refund checker
Put in the figures from your P60 or last payslip and see if HMRC owes you a refund or you still owe tax, with Gift Aid, mileage, uniform and work costs added in.
Open →Self-employed tax calculator 2026/27
Your income tax, Class 4 National Insurance and the dates to pay HMRC, with payments on account worked out for you.
Open →CIS tax refund calculator 2026/27
Contractors take 20% (or 30%) off your labour. See your real tax bill and whether HMRC owes you a refund.
Open →Company director tax calculator 2026/27
Work out the best mix of salary and dividends for 2026/27, with corporation tax, dividend tax and the dates to pay.
Open →Employee, limited company or CIS? Compare 2026/27
Put the same money through three ways of working and see which leaves you the most.
Open →Coming soon
Tax leakage on your Self Assessment
See the tax you could be losing each year: unused allowances, the £100k trap, the Child Benefit charge and more.
UK only, with each nation's own rates
KiQiCulators work out UK tax for people who live in the UK. Income tax on wages, self-employed profit, pensions and rent depends on where you live: Scotland sets its own rates, and Wales and Northern Ireland use the same rates as England. National Insurance, savings and dividend tax, Child Benefit and corporation tax are the same across the UK. If you live outside the UK, these calculators will not be right for you.
Want the real numbers?
These are estimates. Talk to a KiQi accountant about your own situation and the best way to pay yourself.