Pension tax works across two distinct stages: how money goes in (tax relief and contribution limits) and how it comes out (tax-free cash, drawdown, and annuity income). The rules for each stage are different, and getting them wrong in either direction costs real money — either by missing relief you were entitled to on the way in, or by pulling too much taxable income in a single year on the way out.
This hub covers the key pension tax rules for 2026/27: how tax relief is calculated and claimed, the annual allowance and MPAA limits, the tax-free lump sum cap, how drawdown income interacts with income tax, and the April 2027 change to pension Inheritance Tax treatment. For the wider retirement picture, return to the Pensions & Retirement section.
Pension Tax Relief — The Core Advantage
Tax relief makes pensions the most tax-efficient long-term savings vehicle available in the UK. The effective cost of contributing £100 to your pension depends on your tax rate:
| Tax band | Marginal rate | Your effective cost per £100 in pension | How relief is given |
|---|---|---|---|
| Basic rate | 20% | £80 | Added automatically by provider |
| Higher rate | 40% | £60 | 20% auto; additional 20% must be claimed |
| Additional rate | 45% | £55 | 20% auto; additional 25% must be claimed |
The critical issue for higher rate taxpayers: Basic rate relief (20%) is added automatically by your pension provider in a “relief at source” scheme. The extra 20% for higher rate taxpayers and extra 25% for additional rate taxpayers must be claimed — either via Self Assessment or by contacting HMRC to adjust your tax code. Many higher rate taxpayers never claim this, effectively leaving hundreds or thousands of pounds with HMRC each year.
Salary Sacrifice
In employer-run schemes using salary sacrifice, both employee and employer NI savings are made. The employee accepts a lower salary and the employer pays the equivalent into the pension directly. The employee pays no income tax or NI on the amount sacrificed. This is the most efficient relief method for employed workers.
The Annual Allowance 2026/27
| Allowance type | Amount | Who it applies to |
|---|---|---|
| Standard annual allowance | £60,000 | Most pension savers |
| Tapered annual allowance (minimum) | £10,000 | High earners with adjusted income above £260,000 |
| Money Purchase Annual Allowance (MPAA) | £10,000 | Anyone who has flexibly accessed a DC pension |
Carry forward: You can carry forward unused annual allowance from the previous three tax years. This is useful for making a large one-off contribution — for example, if you received a bonus or sold a business asset.
Tapered Annual Allowance
The taper applies when:
- Threshold income exceeds £200,000 (salary plus other income, minus personal pension contributions)
- Adjusted income exceeds £260,000 (threshold income plus employer pension contributions)
The allowance reduces by £1 for every £2 of adjusted income above £260,000. The minimum is £10,000, reached at £360,000 adjusted income.
Money Purchase Annual Allowance (MPAA)
Once you flexibly access a defined contribution pension — taking any drawdown payment or a flexible lump sum above the tax-free element — the MPAA is triggered permanently. After that point, you can only contribute £10,000 per year to money purchase pensions with tax relief. This is a one-way door. It catches people who take a small flexible withdrawal thinking it will not have lasting consequences for their contribution capacity.
Worked Example: Higher Rate Relief
Scenario: Olivia earns £65,000 and contributes £400 per month to a personal pension (£4,800 per year). Her pension uses relief at source.
- Her provider claims 20% basic rate relief: actual pension contributions = £6,000/year (£4,800 + £1,200 basic rate top-up)
- As a 40% taxpayer, Olivia can also claim an additional 20% on the gross contribution
- Additional relief: 20% × £6,000 = £1,200 per year
- This must be claimed via Self Assessment or HMRC tax code adjustment
If Olivia does not claim, she overpays by £1,200 every year. Over 10 years, that is £12,000 left unclaimed.
The Tax-Free Lump Sum
You can take 25% of your pension pot as a tax-free lump sum when you start drawing your pension (from age 57 from 2028 onwards). The tax-free amount is capped at £268,275 in total across all your pensions.
| What you take | Tax treatment |
|---|---|
| First 25% (up to £268,275 total) | Tax-free |
| Remaining 75% | Taxed as income at marginal rate |
You do not have to take the tax-free cash all at once. Under drawdown, each withdrawal you take is treated as 25% tax-free and 75% taxable. This “partial uncrystallisation” approach can spread the tax impact across multiple years.
Drawdown and Income Tax
Once in drawdown, pension withdrawals are taxed as income. The key planning challenge is avoiding unnecessary bunching of taxable income in a single year.
A common mistake: taking a large lump sum from drawdown in year one of retirement, which pushes taxable income into the 40% band, when spreading the withdrawals across two or three years would have kept everything in the basic rate band.
Practical planning principles:
- Use the personal allowance (£12,570) each year — pension withdrawals up to the allowance are tax-free
- Fill the basic rate band (up to £50,270 total income) before drawing at higher rate
- Coordinate drawdown withdrawals with other income sources (State Pension, rental income, savings interest)
- Consider a mixture of drawdown and ISA withdrawals to manage taxable income each year
For detailed modelling, use the Pension Drawdown Income Tax Planning guide.
The April 2027 IHT Change
This is the most significant upcoming change to pension planning. Currently, defined contribution pension pots sit completely outside your estate for Inheritance Tax purposes. If you die before drawing the pension, it passes to your nominated beneficiaries free of IHT.
From April 2027, this changes. Most pension pots will be counted within the estate and subject to IHT above the available nil-rate bands. For many people with larger pensions, this will materially increase their estate’s IHT exposure.
Actions to consider now:
- Check your nominated beneficiaries are correct on each pension
- Model your total estate (including pension) against available nil-rate bands
- Consider the timing of drawdown relative to other assets
- Get professional advice if the pension forms a major part of your estate
For the full IHT context, see the Inheritance Tax hub.
Emergency Tax on Pension Withdrawals
One of the most common and avoidable pension tax problems is emergency tax. When you make your first flexible withdrawal from a defined contribution pension, HMRC usually does not have a current tax code on record for that payment. The provider applies Month 1 emergency tax — meaning only 1/12th of your personal allowance is offset against the withdrawal, pushing the effective rate far higher than it should be.
What to do: After an emergency-taxed pension withdrawal, reclaim the overpaid tax immediately using one of three HMRC forms:
- P55 — if you took a partial pension withdrawal and the plan is still open
- P53Z — if you cashed in a small pension pot entirely and have other income
- P50Z — if you cashed in a small pension pot entirely and have no other income
HMRC processes these forms and refunds overpaid tax directly. Without filing, the overpayment is only corrected at the end of the tax year. For large withdrawals, this can represent several thousand pounds held by HMRC for months unnecessarily.
Common Pension Tax Mistakes
| Mistake | Why it costs money | What to do instead |
|---|---|---|
| Not claiming higher rate relief | Leaves 20% unclaimed on gross contributions | File Self Assessment or contact HMRC for code adjustment |
| Triggering MPAA accidentally | First flexible withdrawal permanently reduces future allowance to £10k | Take only tax-free cash first; take advice before any flexible drawdown |
| Large single-year withdrawal | Pushes income into 40% band unnecessarily | Spread withdrawals across tax years to stay in basic rate band |
| Emergency tax on first drawdown | Month 1 code results in major overpayment | Reclaim via P55, P53Z, or P50Z immediately — do not wait for year-end |
| Missing carry forward | Loses unused allowance from 3 prior years | Check prior-year pension inputs before making large contributions |
What This Cluster Covers
| Your question | Best starting point |
|---|---|
| How does tax relief work? | Pension Tax Relief Guide |
| How much can I contribute? | Pension Annual Allowance Guide |
| Tapered allowance for high earners? | Tapered Annual Allowance Guide |
| I may have exceeded the allowance? | Exceeding the Annual Allowance |
| Post-lifetime allowance rules? | Pension Lifetime Allowance Guide |
| Tax-free cash rules? | Pension Tax-Free Lump Sum Guide |
| How long will my pot last? | Pension Drawdown Calculator |
| Structuring drawdown withdrawals? | Pension Drawdown Income Tax Planning |
| Drawdown vs annuity? | Drawdown vs Annuity Comparison |
| Annuity rates? | Annuity Rates 2026 |
Related Hubs
- Income Tax hub — how pension income is taxed within the wider income tax system
- Inheritance Tax hub — the April 2027 pension IHT change
- SIPP hub — self-invested personal pension rules and flexibility
- Workplace Pensions hub — auto-enrolment, employer contributions, salary sacrifice
The Core Pension Tax Cluster
- Pension Tax Relief Guide
- Pension Annual Allowance Guide
- Tapered Annual Allowance Guide
- Exceeding the Pension Annual Allowance
- Pension Lifetime Allowance Guide
- Pension Tax-Free Lump Sum Guide
- Pension Drawdown Calculator
- Pension Drawdown Income Tax Planning
- Drawdown vs Annuity Comparison
- Annuity Rates 2026
- Income Tax on Pension Withdrawals
- Pension Annual Allowance Carry Forward
- Pension Carry Forward Guide
- Money Purchase Annual Allowance (MPAA) Guide
- Pension Inheritance Tax 2027
- Pension IHT Changes 2027 — What Changes in April
- Pension Inheritance Tax Changes (Tax section)
- Pension Tax Relief Calculator
- Reclaiming Pension Tax Relief for Previous Years
- Reporting Pension Income to HMRC
- Emergency Tax on Pension Withdrawals
- Paying a Bonus into Your Pension
- Pension Death Before 75 — Tax Rules
- Salary Sacrifice vs Direct Pension Contributions
- Pension Contributions from Rental Income
- Limited Company Pension Tax Relief
- Protected Pension Age 55 vs 57 Guide