∑ What your result means
Under relief-at-source pensions, the amount you pay from your take-home pay is automatically topped up by basic-rate tax relief, and higher and additional-rate taxpayers can claim further relief through Self Assessment.
See how much tax relief is added to your pension contributions.
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Annual gross salary is included so you can interpret this estimate and make a better-informed comparison.
Pension contribution is included so you can interpret this estimate and make a better-informed comparison.
Employer contribution is included so you can interpret this estimate and make a better-informed comparison.
Contribution method is included so you can interpret this estimate and make a better-informed comparison.
Under relief-at-source pensions, the amount you pay from your take-home pay is automatically topped up by basic-rate tax relief, and higher and additional-rate taxpayers can claim further relief through Self Assessment.
The net amount you contribute is grossed up by basic-rate relief (adding 25% of the net amount, equivalent to 20% of the gross figure) to find what actually lands in your pension. If your salary is in the higher or additional-rate band, an estimate of the further relief you can claim back is shown separately.
This assumes a relief-at-source scheme (common for personal and many workplace pensions); salary-sacrifice and net-pay schemes give relief differently, and the annual allowance (usually £60,000) caps how much can receive tax relief each year.
If you're a higher or additional-rate taxpayer, remember to claim your extra relief through Self Assessment or by contacting HMRC — it isn't added automatically.
UK-specific contextFigures use GBP and current published rates and thresholds.
Reviewed for clarityUpdated 3 August 2026.
ImportantFor planning and educational use — not tax, legal or financial advice.
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No, that portion is added automatically by your pension provider under relief-at-source — you don't need to do anything for the basic-rate top-up.
You need to claim it yourself, usually through a Self Assessment tax return or by writing to HMRC, since providers only apply the basic-rate top-up automatically.
Salary sacrifice reduces your gross salary before tax and National Insurance are calculated, which works differently to relief-at-source — this calculator assumes relief-at-source.
Yes, tax relief is generally capped by the annual allowance (usually £60,000, tapered for very high earners) and you can't get relief on contributions above your UK relevant earnings.
Rules and thresholds used by this calculator are labelled for 2026–27 or formula-labelled period. Review the primary guidance before making a filing, borrowing, benefit or investment decision.
Last source review: 3 August 2026. Calculator results are estimates and may exclude circumstances described in the methodology.