Contractor Pension Tax Relief: How PSC Contributions Cut Your Tax

Three tax reliefs in one payment

An employer pension contribution from your PSC triggers three separate tax reliefs at once, which is why it consistently outperforms every other extraction route available to a PSC director. Understanding each layer in turn makes it clear why pension funding is often the biggest lever in a contractor's tax planning.

The first relief is corporation tax deductibility. Under Finance Act 2004 s.196, an employer contribution to a registered pension scheme is deductible against the company's corporation tax liability on a paid basis, provided it is made wholly and exclusively for the purposes of the business. The deduction reduces taxable profits in the accounting period in which the payment is made, so a contribution paid on the last day of the year still qualifies for that year's relief.

The second relief is NIC exemption on both sides. Salary is subject to employer secondary Class 1 National Insurance at 15% above the secondary threshold of £5,000 (2026/27), and employee primary Class 1 NIC at 8% between £12,570 and £50,270. An employer pension contribution carries none of this. Every pound goes into the pension rather than being split between the pension fund and HMRC's NIC account.

The third relief is no income tax on receipt. The contribution is not treated as employment income or a benefit in kind for the director. Tax is deferred until the director draws benefits, at which point 25% of the fund can typically be taken tax-free and the balance is taxed as income, usually at a lower effective rate than during working years. The pension pot therefore grows gross until it is drawn.

For the full strategy around how employer contributions fit within the wider salary and dividend extraction picture, and how to sequence pension payments within a tax year, see the employer contributions pillar guide, which this page sits below.

The CT saving arithmetic: 19%, 26.5% and 25%

The corporation tax saving on an employer contribution depends on which rate band the company's augmented profits fall into for the financial year. FA 2026 made no change to corporation tax rates, so the three-rate structure that has applied since April 2023 continues into 2026/27.

Profit band (augmented)	CT rate	CT saving on £10,000 contribution	Effective cost to the company
Up to £50,000	19% (small profits rate)	£1,900	£8,100
£50,001 to £250,000	Marginal relief (approx. 26.5% effective on the marginal pound)	Approx. £2,650	Approx. £7,350
Above £250,000	25% (main rate)	£2,500	£7,500

The marginal-relief band produces the highest effective saving, at approximately 26.5% on profits between £50,000 and £250,000. The marginal-relief fraction is 3/200 under CTA 2010 Part 3. A contractor whose company profits sit in this band and who makes a pension contribution not only reduces the tax bill at 26.5% on the contribution amount, but also reduces the profits that sit in the marginal band, so successive contributions reduce the marginal-rate exposure until the company's profits fall to the small-profits-rate zone.

One practical note: the £50,000 and £250,000 limits are divided by the number of associated companies a contractor controls or is associated with. Two associated companies each see their limits halved to £25,000 and £125,000. If you operate more than one company, or your spouse does under common control, the associated-company rules can shrink these bands, so check whether association applies before assuming the full limits.

How the paid-basis rule affects planning

Relief is given in the period the payment is made, not the period it is accrued. If the company has a 31 December year-end and the board resolves to make a £30,000 pension contribution in December but does not transfer the funds until 5 January, the deduction falls in the January period, not the December one. Set up the bank transfer before the year-end date, not after. This is the single most common timing error on employer contributions.

Employer vs personal route: why the employer route wins for most PSC directors

A personal pension contribution receives basic-rate tax relief at source (the pension provider claims 20% from HMRC and adds it to the contribution), and higher-rate taxpayers can claim additional relief through Self Assessment. But personal contributions are subject to a hard cap: you cannot contribute more than 100% of relevant UK earnings in a tax year. For most PSC directors, relevant UK earnings means salary only. Dividends do not qualify.

This creates a stark ceiling. A director who takes a salary of £6,708 (the lower earnings limit for 2026/27, the common single-director salary to secure a qualifying NI year) has personal contribution headroom of just £6,708 per year, regardless of the £180,000 sitting in the company. The personal route is, in practice, almost irrelevant for a typical contractor who draws most of their income as dividends.

The employer (company) contribution faces no earnings-based cap. It is limited only by:

• the annual allowance of £60,000 (2026/27), measured across all contributions (employer and personal combined) to all registered schemes
• the wholly-and-exclusively test (the contribution must be commercially justifiable as remuneration for the director's work)
• the tapered annual allowance where threshold income exceeds £200,000 and adjusted income exceeds £260,000

For most contractors whose company profits sit between £60,000 and £200,000, none of these constraints bite beyond the £60,000 annual allowance itself. The full allowance is available via the employer route.

The low-salary director: a concrete comparison

Consider a PSC director in 2026/27 with company profits of £120,000 before the pension contribution (within the marginal-relief band), taking a salary of £6,708 and dividends for the remainder. The company wants to make a £20,000 pension contribution.

Via the employer route: the company pays £20,000 directly to the pension scheme. It deducts £20,000 from taxable profits. At a 26.5% marginal rate the CT saving is approximately £5,300. No employer NIC. No employee NIC. No income tax charge on the director. Net cost to the company: approximately £14,700 for £20,000 in the pension.

Via a personal contribution: the director can contribute at most £6,708 personally (100% of their salary). They pay £5,366 net; the pension provider claims basic-rate relief at 20% and the fund receives £6,708. Through Self Assessment the director can claim higher-rate relief on the top-up, but the ceiling is still £6,708. To get £20,000 into the pension, the company would first have to pay a larger salary, incurring employer NIC at 15% above £5,000 and employee NIC at 8% above £12,570, as well as income tax at up to 40%. The employer route sidesteps all of that.

NIC: why the savings are larger than the rate suggests

The absence of NIC on employer pension contributions is sometimes undervalued because contractors focus on income tax. But the combined NIC saving is substantial on every pound redirected from salary into pension.

Every pound of salary above the secondary threshold of £5,000 costs the company 15% in employer secondary Class 1 NIC. The employee pays 8% primary NIC on earnings between the primary threshold (£12,570) and the upper earnings limit (£50,270). On a gross salary increase of £1,000 above £12,570 the combined NIC cost is £230 (£150 employer plus £80 employee), before accounting for income tax. A pension contribution of £1,000 carries none of this.

The NIC saving interacts with CT relief. When a company pays an extra £1,000 as salary rather than pension, it also pays £150 in employer NIC (15%), making the total company outflow £1,150. The CT deduction is on the full £1,150 (salary plus employer NIC are both deductible), saving about £305 at the marginal 26.5% rate. Net company cost: £845. The employee receives £1,000 gross salary, loses £80 NIC, loses income tax at their marginal rate, and keeps the rest. Compare that with a £1,000 pension contribution: the company spends £1,000, saves approximately £265 CT, net cost approximately £735, and the full £1,000 goes into the pension. Every scenario favours the pension route where the director does not need the cash immediately.

The annual allowance and when it constrains

The annual allowance is £60,000 for 2026/27, measuring the total of all pension inputs across all registered schemes in the tax year. This includes both employer contributions paid by the company and any personal contributions. Defined-benefit pension accrual is measured differently (by a factor of 16 times the annual benefit increase), but most contractor pensions are defined-contribution arrangements.

Three specific limits apply and are worth knowing:

The tapered annual allowance

The taper reduces the allowance for high earners. It applies where threshold income exceeds £200,000 and adjusted income exceeds £260,000 in the same tax year. Threshold income is broadly taxable income excluding pension contributions. Adjusted income adds pension contributions back. Where both tests are met, the annual allowance reduces by £1 for every £2 of adjusted income above £260,000, to a minimum floor of £10,000.

For a contractor with company profits of £250,000, a salary of £50,000 and dividends of £80,000, threshold income is approximately £130,000 (below £200,000), so the taper does not apply even at substantial profit levels. The taper bites primarily at very high-profit contractors or those with large additional income from other sources. For most single-director PSCs the full £60,000 remains available.

The money purchase annual allowance

The money purchase annual allowance (MPAA) is £10,000 (2026/27). It is triggered the moment a contractor flexibly accesses a defined-contribution pension, for example by beginning income drawdown or taking an uncrystallised-fund lump sum. Once triggered it cannot be reversed. If the MPAA applies, the allowance for further defined-contribution contributions (employer and personal combined) is capped at £10,000, and carry-forward is lost for DC inputs.

This is a trap for contractors who reached 55 and started drawing pension income before they intended to wind down contributions. If you have ever flexibly accessed any DC pension, check whether the MPAA applies before the company makes a large employer contribution.

Carry-forward depth: see the dedicated guide

Where the current-year annual allowance is not enough, unused allowance from the previous three tax years can be carried forward, potentially allowing a single contribution well above £60,000. The ordering rules, the membership-year conditions and the interaction with the MPAA are covered in full in the contractor pension carry-forward guide. This page covers the core relief mechanics; carry-forward depth belongs there.

Carry-forward is particularly valuable for contractors who have had low-profit years, career gaps, or who simply did not fund a pension while building the business. A contractor who has been a pension scheme member for three years with no contributions has up to £180,000 of carry-forward available in addition to the current-year £60,000, subject to the ordering rules. For a company with a profitable year approaching its close, checking carry-forward availability is always worthwhile before the year-end bank transfer.

Practical conditions for the deduction

Three conditions must be met for the employer contribution to be deductible against corporation tax under FA 2004 s.196 and HMRC's guidance at BIM46035.

Wholly and exclusively for the purposes of the business

The contribution must represent reasonable commercial remuneration for the director's work. For a contractor who is the company's only fee-earner and whose salary is already below market rate (as most single-director PSC salaries are), a pension contribution that brings total remuneration to a commercially reasonable level will satisfy this test comfortably. A very large one-off contribution for a company that has ceased trading or is being wound down without corresponding active work attracts more HMRC scrutiny under HMRC's BIM46035 guidance and should be supported by a board resolution and professional advice.

Paid basis, not accruals

As discussed above, the deduction falls in the period the payment is physically made to the pension scheme, not the period it is resolved or accrued. Board minutes authorising a contribution are good practice but do not substitute for the actual payment. Plan the bank transfer date around the company's year-end.

Registered pension scheme

The contribution must be made to a registered pension scheme under FA 2004 Part 4. Most SIPPs (self-invested personal pensions), stakeholder pensions and workplace pensions operated by regulated UK providers are registered schemes. Offshore or unregistered arrangements do not qualify and can trigger significant tax charges. Choosing a registered scheme is in practice straightforward; the pension provider confirms registration status.

Comparing employer pension with salary and dividends

The employer contributions guide covers the full extraction hierarchy in depth. The summary position for 2026/27 is:

• Pension first (up to the annual allowance): CT-deductible, NIC-free, income-tax-deferred. Most efficient where the director can defer the cash.
• Salary second (up to a level that is CT-efficient): deductible for the company; employee NIC and income tax apply, but the company also gets CT relief and avoids the employer NIC if within the Employment Allowance. Single-director companies without other staff cannot claim the Employment Allowance, which limits the salary-only case (see our director salary and dividend split guide for the LEL vs personal-allowance discussion).
• Dividends last: from post-CT profit, taxed at 10.75% (basic), 35.75% (higher) or 39.35% (additional) in 2026/27 (Finance Act 2026 s.4, rates up from 6 April 2026), with the £500 dividend allowance. No NIC. But the company has already paid CT on the profits being distributed.

Pension funding beats salary and dividends for any contractor who can leave the funds untouched until retirement, because it eliminates the NIC layer entirely and defers the income tax until a period when the effective rate is likely to be lower. The trade-off is illiquidity: pension funds are generally inaccessible before age 55 (the minimum pension access age rises to 57 from April 2028).

The PSC limited company tax guide and the director salary and dividend split guide cover the full extraction strategy, including how to model the combined effect of salary, pension and dividends at different profit levels.

IR35 status and pension contributions

Whether your work sits inside or outside IR35 affects how you fund a pension, not whether you can fund one.

If you are outside IR35 (or working with a small-company client where your PSC self-assesses under Chapter 8), the PSC retains its profits and the employer contribution is straightforward: the company pays it from retained profits before the year-end.

If you are inside IR35 under Chapter 10 (working with a medium or large client), the fee-payer deducts PAYE and NIC before paying the PSC, so the profit that reaches the company is already tax-stripped on the deemed direct payment. There is still CT relief on any employer pension contribution the company makes from its remaining resources, and the contribution still carries no additional NIC. However, the practical headroom depends on whether the company has sufficient cash after the Chapter 10 withholding to fund a contribution. An inside IR35 engagement may reduce the amount available, but does not eliminate the employer contribution route entirely where the company has other outside-IR35 income or retained reserves.

Understanding the interplay between your IR35 position and your pension funding requires knowing which chapter applies to each engagement. If you are unsure, the IR35 status review service can help clarify your position before year-end planning.

A note on defined-benefit schemes

Most contractors use defined-contribution arrangements (SIPPs, stakeholder pensions, workplace DC schemes), where the benefit is whatever the fund has accumulated. Some contractors, particularly those who have worked in the public sector, have defined-benefit (final salary or career average) pension rights. The annual allowance interacts with DB accrual differently: DB annual growth is valued at 16 times the increase in the annual pension entitlement, plus any lump-sum increase, for AA purposes. The employer contribution mechanics described on this page apply to DC contributions; DB accrual has its own measurement rules and the detail is beyond this page's scope. If you have DB rights alongside a DC arrangement, professional advice on the AA interaction is important before making a large employer contribution.

Getting the contribution right

The steps that deliver the full relief, in order:

1. Confirm the company's year-end date and build the contribution into the year-end cash-flow plan, not as an afterthought.
2. Check the available annual allowance, including any carry-forward from the previous three years (see the carry-forward guide for the mechanics).
3. Confirm the MPAA has not been triggered if you have ever drawn flexibly from a DC pension.
4. Confirm the pension scheme is a registered scheme and that the provider will accept employer contributions directly from the company (most SIPPs and personal pensions do, but some schemes require contributions via payroll).
5. Pass a board resolution documenting the contribution, the amount, and the year to which it relates.
6. Transfer the funds from the company bank account to the pension provider before the company's accounting year-end.
7. Record the payment in the company's management accounts as a pension contribution and claim the deduction in the CT600.

A specialist contractor accountant can model the optimal contribution amount for your profit level and year-end, factoring in the CT rate band, the salary you have paid, and any other remuneration. If you would like to discuss the right pension strategy for your PSC, our contractor accountancy services include year-end tax planning as a standard part of the service.