Advanced Taxation (UK) · Income tax: income from self-employment

Pension Contributions and Reliefs for Traders in ACCA Advanced Taxation

Updated 11 October 2026 · Fact-checked

A trader gets income tax relief on personal pension contributions by paying the net amount to the scheme, with basic rate relief added there. Higher rate relief comes from extending the basic rate band. Relief is limited by earnings and the annual allowance. Excess contributions trigger an annual allowance charge at the trader's marginal rates.

Understand Pension Contributions and Reliefs for Traders

A self-employed trader pays personal pension contributions out of taxed profits. The pension scheme claims basic rate tax relief of 20% from HMRC. So if you want a gross contribution of £10,000, you pay £8,000 and the scheme adds £2,000.

The trader does not deduct the contribution when computing trading profit. The contribution is not an expense of the business. Relief is given through the income tax computation by extending the basic rate band and the higher rate band by the gross contribution. This means more income is taxed at 20% instead of 40%, or at 40% instead of 45%. That is how higher and additional rate relief is given.

There are two limits. First, tax relief is given on gross contributions up to the higher of 100% of relevant earnings (for a trader, broadly taxable trading profits) and £3,600. Second, the annual allowance is £60,000 for 2025/26. Pension input above the allowance (plus any unused allowance carried forward) is taxed through the annual allowance charge. The charge is at the trader's marginal rates, as the excess is added to income.

High earners face tapering. Where threshold income exceeds £200,000 and adjusted income exceeds £260,000, the annual allowance is reduced by £1 for every £2 of excess, down to a minimum of £10,000. Adjusted income includes the gross pension contributions. Threshold income does not, broadly, because contributions made by the individual are deducted in arriving at it.

Unused annual allowance can be carried forward from the previous three tax years. The current year's allowance is used first, then the earliest of the three years. You must have been a member of a registered pension scheme in the year you carry forward from. Tapering matters too: the unused amount for earlier years is worked out using the allowance applying to that year.

A further point is the adjusted net income used for the personal allowance. Gross personal pension contributions are deducted from net income to get adjusted net income. This can restore some or all of the personal allowance where income is between £100,000 and £125,140. The effective marginal rate in that band is 60%, so pension contributions are very effective.

Key rules to remember

Net payment to scheme: Net payment = Gross contribution × 80%; The scheme claims 20% basic rate relief. Gross = net × 100 ÷ 80.
Maximum relievable gross contribution: Higher of relevant earnings and £3,600; For a trader, relevant earnings are broadly taxable trading profits. Contributions above this get no relief.
Annual allowance: £60,000 for 2025/26; Pension input above this, after carry forward, is subject to the annual allowance charge.
Tapered annual allowance: £60,000 − ((Adjusted income − £260,000) ÷ 2), minimum £10,000; Applies only if threshold income exceeds £200,000. Use the ACCA tax tables for limits.
Carry forward: Current year allowance, then unused allowance of the previous 3 years, earliest first; You must have been a member of a registered scheme in each year you carry forward from.
Band extension: Basic rate band £37,700 + gross contribution; higher rate limit £125,140 + gross contribution; This gives higher and additional rate relief.
Annual allowance charge: (Pension input − available allowance) taxed at the trader's marginal rates; The excess is treated as the top slice of income.

How to solve Pension Contributions and Reliefs for Traders questions

Use this order for any question on a trader's pension contributions. Keep gross and net figures separate.

1Identify whether the figure given is net paid or gross. If net, gross it up by dividing by 0.8.
2Check relief eligibility: gross contribution must not exceed relevant earnings (taxable trading profits) or £3,600 if higher.
3Compute taxable income without the pension. Do not deduct the contribution from trading profit.
4Extend the basic rate band, and the higher rate limit if needed, by the gross contribution. Then compute income tax on the bands.
5Reduce adjusted net income by the gross contribution when testing the personal allowance restriction above £100,000.
6Work out the annual allowance. Check threshold income and adjusted income for tapering, with a floor of £10,000.
7Compare pension input with the allowance and unused allowance from the previous three years, earliest first. Any excess is charged at marginal rates.
8State the tax saving or charge and give a brief recommendation, such as carry forward use or contribution timing.

Quickest way: Marginal rate shortcut

When to use it: Use when asked for the tax saving from a given contribution and the trader is clearly in one band.

Gross up the net payment: net ÷ 0.8.
Find where the income sits: basic, higher, additional, or in the £100,000 to £125,140 band.
Net cost = gross − 20% basic relief − extra relief at the marginal rate on the part of the gross extending the band.
For income in the £100,000 to £125,140 range, the effective marginal rate is 60%. Check how much of the contribution restores the allowance.
Confirm the gross is within the annual allowance and earnings, or the charge applies.

Common mistakes in Pension Contributions and Reliefs for Traders

Deducting the pension contribution from trading profit.
Students treat it like a business expense.
Fix: Leave trading profit unchanged. Give relief by extending the bands in the income tax computation.
Using the net payment as the gross contribution when testing limits.
The question states the cash paid and students move quickly.
Fix: Always gross up by ÷ 0.8 before comparing to earnings, the annual allowance or band extension.
Forgetting to deduct the contribution when testing personal allowance restriction.
Students compute adjusted net income from net income only.
Fix: Deduct gross personal pension contributions to get adjusted net income. This can restore the personal allowance.
Carrying forward the most recent year first.
It feels natural to use the newest year.
Fix: Use the current year first, then the earliest of the three previous years, and so on.
Including the contribution in threshold income when testing the taper.
Students confuse threshold income with adjusted income.
Fix: Adjusted income includes pension contributions. Threshold income excludes personal contributions made by the individual, broadly. Test both carefully.
Ignoring the tapered allowance floor.
The calculation is run without checking the minimum.
Fix: Compute the reduction and stop at £10,000. The allowance never falls below that.

Worked examples

Example 1

Priya is a sole trader with taxable trading profit of £140,000 for 2025/26 and no other income. She pays £40,000 into a personal pension (net). Assume threshold income and adjusted income are below the taper limits and she has no earlier pension input. Compute her income tax liability with and without the contribution, ignoring NIC.

Show the solution

Gross contribution = £40,000 ÷ 0.8 = £50,000. This is below the £60,000 annual allowance and below her earnings, so full relief is available.
Without the contribution: income £140,000, so personal allowance is nil as adjusted net income is above £125,140. Taxable income £140,000.
Tax: £37,700 × 20% = £7,540. £87,440 (£125,140 − £37,700) × 40% = £34,976. £14,860 (£140,000 − £125,140) × 45% = £6,687. Total £49,203.
With the contribution: adjusted net income = £140,000 − £50,000 = £90,000. Personal allowance is £12,570 in full as adjusted net income is below £100,000.
Taxable income = £140,000 − £12,570 = £127,430. The basic rate band is extended to £37,700 + £50,000 = £87,700.
Tax: £87,700 × 20% = £17,540. £39,730 (£127,430 − £87,700) × 40% = £15,892. Total £33,432.
Tax saving = £49,203 − £33,432 = £15,771.

Answer: Income tax falls from £49,203 to £33,432, a saving of £15,771, for a net payment of £40,000. The saving is on top of the £10,000 basic rate relief added at source.

Example 2

Tom, a trader, makes a gross personal pension contribution of £95,000 in 2025/26. Assume no tapering applies. His pension input was £20,000 in 2022/23 (annual allowance £40,000), £35,000 in 2023/24 and £45,000 in 2024/25 (annual allowance £60,000 each year). He was a scheme member throughout. His trading profit for 2025/26 is £200,000. Compute the available allowance, any excess, and the charge assumed to be at 45% on the excess.

Show the solution

Relief on the contribution is available as £95,000 is below relevant earnings of £200,000.
Current year allowance is £60,000. Pension input is £95,000, so £35,000 exceeds it.
Unused allowance 2022/23: £40,000 − £20,000 = £20,000.
Unused allowance 2023/24: £60,000 − £35,000 = £25,000.
Unused allowance 2024/25: £60,000 − £45,000 = £15,000.
Carry forward is used earliest first. Use £20,000 from 2022/23, then £15,000 from 2023/24 to cover the £35,000 excess.
The excess is fully covered, so no annual allowance charge arises. £10,000 from 2023/24 and the £15,000 from 2024/25 remain unused.

Answer: The excess of £35,000 is fully covered by carry forward (£20,000 from 2022/23 and £15,000 from 2023/24), so there is no annual allowance charge. Carry forward from 2022/23 would be lost after this year in any case, which is why it is used first.

Exam tips

Read whether the amount is net or gross. Mark it clearly at the start of your answer.
Show band extension as a visible line in the computation. Markers look for it.
Always check threshold income and adjusted income when a client has income near or above £200,000. Use the tax tables for the limits.
For income between £100,000 and £125,140, mention the restored personal allowance and the 60% effective rate in your advice.
In planning questions, state that contributions need to be within the annual allowance and that carry forward uses earliest year first.

Practice questions from Income tax: income from self-employment

Pension Contributions and Reliefs for Traders in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

ACCA Applied SkillsPension Contributions and Tax Relief Limits

Pension Contributions and Reliefs for Traders: frequently asked questions

Do traders deduct pension contributions from trading profit?

No. Personal pension contributions are not a business expense. Relief is given in the income tax computation by extending the basic rate band, and the scheme claims basic rate relief at source.

How does carry forward of unused annual allowance work?

You can use unused allowance from the previous three tax years. The current year allowance is used first, then the earliest of the three years. You must have been a member of a registered pension scheme in each year you carry forward from.

When is the annual allowance tapered?

It is tapered when threshold income is above £200,000 and adjusted income is above £260,000. The allowance falls by £1 for every £2 over £260,000, to a minimum of £10,000.

How do pension contributions help with the personal allowance?

Gross personal pension contributions reduce adjusted net income. If income is between £100,000 and £125,140, this can restore some or all of the personal allowance, giving an effective marginal rate of 60% before the contribution.