Glossary · UK
What is Pension Tax Relief?
Government top-up on pension contributions that refunds the Income Tax you paid on the money.
Full Definition
Pension tax relief means contributions are made from income before (or effectively before) Income Tax. Under relief at source, you pay in from taxed income and the scheme reclaims 20% basic-rate relief from HMRC, so a GBP 80 net contribution becomes GBP 100 in the pot. Higher and additional-rate taxpayers can claim a further 20% or 25% through Self Assessment. Relief is limited by the annual allowance (GBP 60,000 for most people in 2026/27, tapered for high earners). It is one of the most valuable reliefs in the UK tax system.
How Pension Tax Relief is calculated
Gross contribution = Net contribution / (1 - basic rate)
Basic-rate relief added = Net x basic rate / (1 - basic rate)- basic rate
- 20% Income Tax basic rate (2026/27).
- Net contribution
- What you actually pay in from taxed income.
Worked example: Pay in GBP 80 net: gross = 80 / (1 - 0.20) = GBP 100, so HMRC adds GBP 20. A higher-rate taxpayer reclaims another GBP 20 via Self Assessment, making the real cost GBP 60 for GBP 100 in the pension.