Pension Tax Relief Calculator UK

When you contribute to a pension, the government adds tax relief at your marginal rate. Basic rate (20%) relief is automatic for most schemes. If you pay 40% or 45% tax, you claim the extra 20% or 25% through your self-assessment tax return. This means a £100 pension contribution effectively costs you only £60 if you are a 40% taxpayer.

The annual allowance is £60,000 for 2024/25 and 2025/26. This is the total of your contributions plus employer contributions. If you exceed it, you pay a tax charge on the excess at your marginal rate. The allowance may be tapered (reduced) if your adjusted income exceeds £260,000, down to a minimum of £10,000.

Net pay: your employer deducts pension contributions before calculating tax, so you get full relief automatically at your marginal rate. Relief at source: contributions are taken from your net (after-tax) pay, the pension provider claims 20% from HMRC, and higher/additional rate taxpayers claim the rest via self-assessment. The end result is the same, but the mechanism differs.

If your pension uses relief at source, you claim the extra 20% (difference between 40% and 20%) through your self-assessment tax return. Enter your gross pension contributions in the pension section. HMRC will adjust your tax code or send a refund. If you do not file a self-assessment, contact HMRC to claim by phone or letter.

Employer contributions are paid gross (no tax deducted) and are not subject to employee income tax or NI. They count towards your annual allowance but not towards the maximum you can personally contribute. Employer contributions are one of the most tax-efficient forms of remuneration.

If your adjusted income exceeds £260,000, your annual allowance is reduced by £1 for every £2 of income above this threshold. The minimum tapered allowance is £10,000 (reached at income of £360,000+). Both threshold income and adjusted income tests must be met. This mainly affects high earners.

Yes. You can carry forward unused annual allowance from the previous 3 tax years. This is useful if you have a bonus year or want to make a large one-off contribution. You must have been a member of a registered pension scheme in the years you carry forward from. Use the oldest year first.

Salary sacrifice is very tax-efficient. You give up salary in exchange for employer pension contributions, saving both employee and employer NI. For a 40% taxpayer, a £1,000 salary sacrifice puts £1,000 in the pension but only costs £580 in lost net pay (saving 42% including NI). The employer also saves 15% NI.

If total contributions (yours plus employer) exceed £60,000, you pay an annual allowance charge on the excess. The charge is at your marginal tax rate (20%, 40% or 45%). You report it on your self-assessment. If the charge exceeds £2,000, you can ask your pension scheme to pay it from your pension pot (Scheme Pays).

Basic rate (20%): £2,000 relief, effective cost £8,000. Higher rate (40%): £4,000 relief, effective cost £6,000. Additional rate (45%): £4,500 relief, effective cost £5,500. If using relief at source, £2,000 is added automatically and you claim the rest via self-assessment. If using net pay, the full relief is automatic through your payslip.