What happens to tax when you retire?

Your income mix changes

When employment income stops, your tax position may change, but retirement does not automatically mean no tax. Taxable income might include State Pension, DB pension income, taxable defined contribution pension withdrawals, part-time earnings, savings, property or investment income.

GOV.UK says you pay Income Tax if your total annual income is above your Personal Allowance. This guide is general information, not tax advice, and it does not cover every edge case.

State Pension can be taxable

State Pension is paid without tax deducted at source, but it still forms part of taxable income. If your total taxable income is above your Personal Allowance, tax may be collected through another pension, employment income or a tax calculation.

Your State Pension forecast tells you how much you may receive, but it is not a tax calculation.

Private pensions and tax-free cash

Defined benefit pensions usually pay taxable income. With defined contribution pensions, withdrawals after any tax-free element are usually taxable as income.

GOV.UK says you can usually take up to 25% of the amount built up in any pension as a tax-free lump sum, subject to allowances. Taking large taxable withdrawals in one tax year can move income into a higher band. That does not make any particular withdrawal pattern right; timing withdrawals is a personal tax-planning question.

Personal Allowance and tax bands

For 2026/27, GOV.UK lists the standard Personal Allowance as £12,570. For England, Wales and Northern Ireland, the main bands are 20% basic rate, 40% higher rate and 45% additional rate above the relevant thresholds.

Scotland has different income tax rates and bands for non-savings, non-dividend income. If you are a Scottish taxpayer, use Scottish rates for pension and employment income rather than assuming the rest-of-UK bands apply.

Couples are not taxed as one pot

A couple may plan spending together, but each person has their own income, allowances and tax bands. Two smaller pension incomes can have a different tax result from one larger pension income, but this guide does not recommend restructuring income or transferring pensions.

How RetirementInSight models tax

RetirementInSight uses a simplified tax model to make retirement projections easier to compare. It is designed for planning insight, not tax filing, lifetime tax optimisation, pension crystallisation planning or withdrawal sequencing advice.

The calculator can help you see how pension withdrawals and State Pension might affect spending in the model. It does not replace HMRC tools, professional tax advice or a full personal tax calculation.

Common questions

Related reading