All calculators

172 free UK tax calculators across 9 categories. Every one shows the tax year it used and the rules it applied.

Showing 169–172 of 172

PAYE vs Self-Employed CalculatorEarning the same money as a salary or as self-employed profit leaves you with different take-home pay - mostly because of National Insurance. This calculator compares both side by side for 2026/27, so you can see the real difference.
Credit Score EstimatorThis credit score estimator gives you a likely band from the main factors lenders look at - payment history, credit utilisation, history length, applications and defaults. It is an educational guide, not your real score, and it never touches your credit file.
Credit Score Improvement SimulatorWant to know how to improve your credit score - and what it unlocks? Start from where you are now, tick the actions you could take, and see your projected score plus which mortgage lenders it would suit.
Soft Search Eligibility CheckerThis eligibility checker gives a rough guide to your approval odds for credit cards, personal loans and mortgages - based on your score band, income, debts and circumstances. It uses no credit check, so it never affects your file.

Every calculator, by category

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Software that files it for you

Partner links

If you keep your own books, these are the packages that handle Self Assessment and Making Tax Digital.

FreeAgent

4.8

Free optionMTD ready

The freelancer and contractor favourite, free with some bank accounts.

Free forever with a NatWest, Royal Bank of Scotland, Ulster or Mettle business account
Built-in Self Assessment and MTD for Income Tax filing

From £0 with a NatWest, RBS or Mettle account, otherwise about £19/mo

QuickBooks

4.6

MTD ready

The big all-rounder with the deepest MTD track record.

Sole Trader plan built specifically for Self Assessment and MTD
Snap and store receipts, automatic bank feeds

From about £10/mo, frequent 90% off intro offers

Xero

4.5

MTD ready

The scale-up choice once you have staff, stock or VAT.

Huge app marketplace and the accountant industry standard
Strong for VAT, payroll and multi-user limited companies

From about £15/mo

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