Tax Checkup
Find tax reliefs, allowances and refunds you may be missing.
Free · No sign-up · About 2 minutes
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About the TaxCalcUK Tax Relief Checker
Tax Checkup is TaxCalcUK's free UK tax relief checker. Answer a short questionnaire about where your income comes from and your circumstances, then see personalised findings such as possible claims, allowances, tax you may have overpaid through work, and thresholds worth checking.
It is designed for people asking questions like “what tax relief can I claim?”, “am I missing tax allowances?” or “am I paying too much tax?”, without turning into a second full tax calculation system. Each finding links to an existing TaxCalcUK calculator and, where relevant, official GOV.UK guidance or claim pages.
How Tax Checkup works
Start by selecting your income sources, then enter the amounts that apply. Follow-up questions only appear when needed, for example partner income, Child Benefit, how your pension contributions work, or whether you want to check tax already paid through work. Results are grouped into money you may be able to claim, tax and thresholds to check, and areas that look clear.
What it cannot check
Tax Checkup cannot see your HMRC Personal Tax Account, complete a Self Assessment return, or cover every relief (including complex foreign income, Scotland-specific Marriage Allowance bands in full, or trading/property allowance elections). Estimates use 2026/27 TaxCalcUK engines and the information you enter.