Pensions and Tax Relief / Lesson 1 of 8
How pension tax relief is given
Two schemes, identical contributions, and one person is quietly £600 a year worse off.
The short answer
- ✓ Net pay arrangements give full relief automatically at your marginal rate
- ✓ Relief at source gives basic rate only: the rest must be claimed
- ✓ Compare gross and taxable pay on your payslip to tell which you have
- ✓ Relief at source benefits very low earners who have no tax to reclaim
The principle
Money you put into a pension is not taxed as income. If you have already paid tax on it, that tax is given back. How it comes back depends entirely on which method your scheme uses.
| Method | How it works | Higher-rate relief |
|---|---|---|
| Net pay arrangement | Contribution deducted before tax is calculated | Automatic and complete |
| Relief at source | Paid from taxed income; provider reclaims basic rate | Must be claimed separately |
| Salary sacrifice | Salary reduced before tax and NI | Automatic, and saves NI too |
Net pay: nothing to do
Gross salary this month £5,000
Pension contribution -£300
-------
Taxable pay £4,700
Tax is calculated on £4,700, so relief at your
full marginal rate is given immediately.
Nothing to claim.Relief at source: half the job is done
You pay from taxed income £240
Provider reclaims basic rate £60
------
In your pension £300
But you paid 40% on that income, not 20%.
The remaining relief is yours to claim.
Nobody claims it for you.Over a year, a higher-rate taxpayer contributing £300 a month has roughly £720 of unclaimed relief sitting there. Over a decade, unclaimed, it is a serious sum.
How to tell which you are on
- Compare your payslip's gross pay with its taxable pay. A gap the size of your contribution means net pay.
- If the contribution appears after tax and your pension statement shows more going in than left your pay, that is relief at source.
- If your gross salary itself is lower than your contractual salary, that is salary sacrifice.
- If still unclear, ask your provider directly. It is a one-line question.
The bit HMRC does not spell out
Relief at source has one advantage that net pay does not: people earning below the personal allowance still get the basic rate top-up added, even though they paid no tax to reclaim. Under a net pay arrangement, a very low earner gets nothing, because there was no tax to relieve.
So the method that disadvantages higher earners actually favours the lowest. Neither is universally better, which is exactly why it is worth knowing which one you have.
Common mistakes
- Assuming all relief is automatic. Under relief at source, it is not.
- Not knowing which method your scheme uses. It decides whether you must act.
- Thinking the provider claims higher rate. They only ever reclaim basic rate.
Try it on your own numbers
This is the same calculator as the full tool page, using 2026/27 rates.
Your pension contribution
See the tax relief the government adds to what you pay in - for the 2026/27 tax year.
Enter your own contribution from take-home pay. Basic-rate (20%) relief is added automatically (“relief at source”).
Total into your pension
You pay in - the rest is tax relief
- Your contribution (net)
- Basic-rate top-up (20%)
- Extra you can reclaim
- Your marginal rate
- Effective cost to you
Claim back via Self Assessment
As a taxpayer you can reclaim a further through your tax return - it does not go into the pension automatically.
Over the annual allowance
Your gross contribution exceeds the annual allowance for . The excess may attract an annual allowance charge unless you carry forward unused allowance.
Estimate only. Relief depends on your full income and pension scheme type.
Where the money comes from
For every £1 that lands in your pension, you fund and tax relief covers the rest.
Projected pot to retirement
After years at growth, contributing gross a year could be worth about - roughly of that is from tax relief alone.
Compare saved scenarios
| Scenario | You pay | Into pension | Reclaim | |
|---|---|---|---|---|
Key takeaways
- ✓ Net pay arrangements give full relief automatically at your marginal rate
- ✓ Relief at source gives basic rate only: the rest must be claimed
- ✓ Compare gross and taxable pay on your payslip to tell which you have
- ✓ Relief at source benefits very low earners who have no tax to reclaim
Check you have got it
3 quick questions. No score is kept, and you can change your mind.
1. Under relief at source, what does your pension provider reclaim?
2. How can you tell you are on a net pay arrangement?
3. Which method is better for someone earning below the personal allowance?
Sources
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