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Pension Contribution Tax Relief Calculator

Estimate how a pension contribution could reduce Income Tax based on your income.

Inputs

Estimate pension tax relief on personal pension contributions.

How pension tax relief works

Pension tax relief means some of the Income Tax that would otherwise be paid is redirected into pension saving. The way relief appears depends on whether the scheme uses relief at source, net pay or salary sacrifice.

Relief at source and higher-rate relief

With relief at source, a pension provider normally adds basic-rate relief. Higher and additional-rate taxpayers may need to claim any further relief from HMRC where eligible.

Salary sacrifice and annual allowances

Salary sacrifice can reduce gross pay before Income Tax and National Insurance are calculated. Pension annual allowance, tapering and minimum wage rules can limit the available benefit, so larger contributions may need professional advice.

Worked examples

£5,000 contribution on a £50,000 income

The calculator compares estimated Income Tax before and after the gross pension contribution to show the possible tax reduction.

How we calculate this

Income Tax is estimated before and after the pension contribution.

The difference is shown as estimated tax relief.

Scheme type and annual allowance rules can affect the final result.

FAQs

Are these calculations financial advice?

No. These calculators provide estimates based on the figures entered and published UK tax assumptions. They are not personal financial advice.

Which tax year does this use?

The calculator uses 2026/27 UK tax assumptions, including Income Tax and National Insurance thresholds.

Will my payslip or tax return match exactly?

Not always. Tax codes, payroll timing, pension scheme type, benefits, expenses and HMRC records can change the final result.

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