Pension via your limited company: the maths most contractors miss

TL;DR: the multiplier

For a typical contractor with an outside-IR35 limited company, the question is: what's the most efficient way to extract spare profit?

• Dividend route: profit minus corporation tax (19–26.5%) minus dividend tax (10.75–39.35%) = ~50–60p of every £1 of profit reaches your bank account.
• Employer pension route: profit minus £0 tax (deductible from CT, no NI either side, no income tax for the contractor) = 100p of every £1 lands in the pension pot.

The catch: pension money is locked until age 55 (rising to 57 in April 2028), and 75% of it is taxed as income when drawn. But for any contractor with a long-term horizon and spare retained profit, the multiplier, typically 1.5–2× — beats every other extraction route.

The annual allowance caps employer + personal contributions combined at £60,000 per year. Taper kicks in at very high incomes (above £260k adjusted income), bringing the floor down to £10,000 at extreme levels. For most contractors the full £60k is available.

How an employer contribution works

Two pension routes exist from a Ltd. They look similar but tax very differently.

Route 1: Personal contribution (Relief at Source)

You take income from the Ltd as salary or dividends, then contribute personally to a pension. Your provider claims 20% basic-rate tax relief from HMRC and adds it to your pot. If you're a higher-rate taxpayer you claim another 20% via self-assessment. This is how most people (employees, sole traders) contribute.

Route 2: Employer contribution (the focus of this guide)

Your Ltd pays the pension scheme directly, with the contribution coming out of pre-tax profit. The contribution:

• Is a deductible business expense for corporation tax (assuming the wholly-and-exclusively test passes, see the risks section below)
• Is NOT taxed as a benefit-in-kind on the contractor (s.307 ITEPA 2003 specifically excludes employer pension contributions from BiK)
• Is NOT subject to employer NI (excluded from earnings under s.6(1) SSCBA 1992)
• Is NOT subject to employee NI either (no earnings, no NI)
• Lands gross in the pension pot, no relief-at-source top-up needed because relief was applied at the company level via the CT deduction

The end result: £20,000 of company profit either becomes ~£10,000–£12,000 of personal income (after CT + dividend tax) OR £20,000 in your pension pot. The second is bigger.

The maths, with a worked example

Concrete scenario: an outside-IR35 contractor with £80,000 of pre-tax company profit. They've already paid themselves £12,570 salary and taken £30,000 of dividends. They're deciding whether to extract another £20,000: as a pension contribution, or as additional dividends.

Route A: Take the £20k as additional dividend

Step 1 (corporation tax). Profit £80,000 sits in the marginal-relief band (£50k–£250k). Effective marginal CT rate is 26.5% in this band. Reducing profit by £20k saves £5,300 of corporation tax. Distributable: £20,000 − £5,300 = £14,700.

Step 2 (dividend tax). Existing dividends were £30,000 — after the £500 dividend allowance, £29,500 of taxable dividends sits inside the basic-rate band (which runs to £37,700 of taxable income). The new £14,700 stacks on top: only £8,200 fits in the remaining basic-rate capacity (at 10.75% in 2026/27 after Autumn Budget 2025 +2pp); the other £6,500 lands in the higher-rate dividend band at 35.75%.

So dividend tax on the new £14,700 is £8,200 × 10.75% + £6,500 × 35.75% = £881.50 + £2,323.75 = £3,205.

Net to pocket: £14,700 − £3,205 = £11,495. That's what £20,000 of company profit becomes via the dividend route.

Route B: Take the £20k as employer pension contribution

The £20,000 is deducted from profit before CT, saving £5,300 of corporation tax. The contribution is NOT taxed as benefit-in-kind on the contractor, NOT subject to NI either side, NOT subject to income tax.

Pension pot value: £20,000. Personal cost: you forewent £11,495 of net dividends.

The multiplier

£20,000 in the pension pot for £11,495 of forgone net dividends. Multiplier: £20,000 / £11,495 = 1.74×. Every £1 of personal income you give up becomes £1.74 in the pension pot.

The multiplier is even higher when the alternative dividend lands further into higher-rate territory — contractors with larger existing dividends or lower profit (less CT relief but more dividend-tax saved) often see multipliers above 2×. Try your own numbers in the calculator below.

Try it with your numbers

Plug in your own profit and existing income to see the multiplier at your specific position. The calculator shows the corporation tax saved at your profit's marginal rate (small profits 19%, marginal-relief band 26.5%, main rate 25%) and the alternative-as-dividend net for direct comparison.

Annual allowance + the taper

All your pension contributions in a tax year combined (employer + personal + any made by anyone for you) count toward the same annual allowance. Standard allowance is £60,000 (since April 2023, raised from £40k by the Chancellor in the March 2023 Budget).

Carry-forward

Unused allowance from the prior 3 tax years can be added to the current year, in addition to the £60k. To use carry- forward you must have been a member of a UK-registered pension scheme during those years (you don't need to have contributed). The current year's £60k is used first, then carry-forward in chronological order. New contractors who haven't contributed before but had a workplace pension during their employed years often have substantial carry-forward room.

The taper

High earners get a reduced allowance. The taper triggers only if BOTH of these are true:

• Threshold income (income before any pension contributions) exceeds £200,000
• Adjusted income (income + employer contributions made for you) exceeds £260,000

When triggered, the £60k allowance is reduced by £1 for every £2 of adjusted income above £260,000, floored at £10,000. So at £360k adjusted income or higher, the allowance is fully tapered to £10k. Most contractors at typical day rates (£300–£900/day) don't hit the taper at all because their threshold income falls below £200k.

SIPP vs workplace pension via Ltd

Three structures work for an employer contribution from your Ltd:

SIPP (Self-Invested Personal Pension)

Most flexibility. You choose investments (funds, ETFs, shares, sometimes commercial property). Common providers: AJ Bell, Hargreaves Lansdown, Vanguard, Interactive Investor. Annual cost typically £100–£300 in platform fees depending on pot size and provider. Best fit for contractors comfortable picking their own investments.

Workplace-style scheme via dedicated provider

Penfold and PensionBee both offer pension setups designed for contractor / freelancer Ltds. They handle the admin (provider sorts the relationship with HMRC, your accountant references the scheme in payroll) and offer simple risk-graded portfolios. Slightly higher fees than a DIY SIPP but lower friction. Good fit if you want a hands-off setup.

NEST or other state-backed scheme

NEST (National Employment Savings Trust, government-owned) accepts employer contributions from any UK employer including single-director Ltds. Lowest cost, simplest setup, very limited investment options. Works as a no-fuss default if you don't want to pick a provider.

Practical setup: 5 steps

1. Open a SIPP or workplace pension scheme in your name. Provider asks for ID, NI number, and your Ltd's details (registered address, company number). Takes ~30 minutes online; account live in 1–3 days.
2. Tell your accountantthe contribution schedule (e.g., monthly £1,000, or one-off year-end lumps). They'll book the contribution in the company's P&L as an expense. No payroll involvement , employer contributions don't go through PAYE.
3. Pay directfrom the company business bank account to the pension scheme's designated account. The provider will give you account details and a payment reference. This must be a Ltd → pension scheme transfer, NOT salary then personal contribution.
4. Your accountant logs it as a deductible expense in the company accounts. At the next CT600 filing, the contribution reduces taxable profit correspondingly.
5. Keep recordsof the contribution rationale if it's a large one-off, board minute referencing the director's role and the contribution amount. Not legally required for routine annual contributions but useful documentation if HMRC ever asks.

Risks and pitfalls

• Wholly-and-exclusively rule. The contribution must be a reasonable business expense, i.e. proportional to the work the director does for the company. HMRC challenges are rare but happen. Documented risk: a contractor took £100k+ contributions from a minimal-profit Ltd; HMRC reclassified part as benefit- in-kind. For full-time owner-managed contractors at typical day rates, contributions up to the £60k allowance are routinely accepted.
• Cash flow.Don't contribute so much that the Ltd can't pay your director salary or upcoming corporation tax bill. The pension pot is locked; the Ltd's cash-flow obligations are not.
• Drawing later.25% of the pot is tax-free at draw (capped at the Lump Sum Allowance £268,275). The other 75% is income at your marginal rate when drawn, including potentially in retirement at the same higher-rate bands you're trying to avoid now. Plan the long-term draw alongside the contribution decision.
• Closing the Ltd with a pension liability. If you have a recurring monthly contribution and close the Ltd, cancel the standing order before the final accounts are filed. Standalone pension pot is unaffected by Ltd closure; only future Ltd-side contributions stop.
• Defined-benefit transfers. If you have an old defined-benefit (final salary) workplace pension from a previous employer, do NOT transfer it into your SIPP without paid-for FCA-regulated advice. Required by law for transfers above £30k; almost always wrong for the typical contractor.

Frequently asked questions

Can my Ltd pay into my pension if I take a £0 director salary?

Yes. The wholly-and-exclusively rule applies to the company's deduction, not to the salary you happen to take. Many sub-PA strategies (£0 salary + dividends) still allow significant employer pension contributions because the test is about whether the contribution is reasonable for the work the director is performing for the company, not whether the director is on payroll. HMRC's published guidance specifically rejects the idea that pension contributions must be linked to a particular salary level. In real-world terms, contributions of £20k–£60k/year are routinely accepted for full-time owner-managed contractors.

What's a reasonable contribution amount?

HMRC's wholly-and-exclusively test has no published numerical threshold, but the practical guidance is: would the company pay this amount if it were employing an arms-length professional doing the same role? For full-time contractors charging market day rates, contributions up to the £60k annual allowance are generally accepted. Above that, even with carry-forward of unused allowance from prior years, you'd want explicit accountant sign-off and good documentation that the contribution is genuinely tied to value created. One-off lumps near year-end (£40k–£60k) are common; consistent monthly contributions are even safer.

Can I contribute more than £60k via carry-forward?

Yes, unused annual allowance from the prior 3 tax years can be carried forward and used in the current year, in addition to the current year's £60k. To use carry-forward you must have been a member of a UK-registered pension scheme during the carry-forward years (you can have been contributing nothing, just need membership). The current-year £60k is used first, then carry-forward in chronological order (oldest first). For a contractor who's never contributed, that's potentially £60k current + £60k × 3 prior years = £240k in a single tax year, though the same wholly-and-exclusively reasonableness test still applies on the company side.

What if my company's profit is below £50k (small profits rate)?

The pension-via-Ltd multiplier is smaller because corporation tax saved is only 19% (vs 26.5% in the marginal-relief band or 25% in main rate). At £40k profit with a £20k contribution, CT saved is £3,800, meaning the alternative dividend is £16,200, and the multiplier lands around 1.4× (with low existing dividends, all in basic-rate band) up to 1.6× (when existing dividends already push the alternative into higher-rate territory). Still favourable vs taking the same money as dividends, but less dramatic than the higher-profit case. If you're comfortably in small-profits territory, consider whether you want the pension lock-up, funds aren't accessible until age 55 (rising to 57 in 2028). For typical small-profit contractors, a smaller contribution (e.g. £5k–£10k/year) is often the right fit.

Do I need to pay employer NI on the pension contribution?

No. Employer pension contributions are explicitly excluded from NICs, they are not earnings under s.6(1) SSCBA 1992. This is structurally different from a salary: a £20k bonus to yourself would attract employer NI of ~£3,000 plus all the personal-side tax/NI. A £20k pension contribution attracts zero NI on either side. The NI-free status is a major reason employer contributions beat both salary and dividend extraction routes for most contractors.

Can I make a one-off lump sum at year-end?

Yes, and many contractor accountants suggest exactly this pattern. The contribution must hit the pension scheme by the company's accounting year-end (i.e., be paid out of the company's bank account before the year ends, not just declared in accounts). The full amount is then deductible against that year's corporation tax. Common pattern: monitor profits through the year, then in months 11–12 instruct your accountant to make a lump-sum contribution that brings profit down to a chosen level (e.g. just under the £50k small-profits threshold to drop into the 19% rate, or down to a level that suits your dividend-planning).

What about my spouse who's also a director?

Each director gets their own annual allowance, £60k each, independently. If both spouses are directors and both work for the company in some capacity, both can receive employer contributions up to £60k each. The wholly-and-exclusively test applies separately for each director's contribution: it must be reasonable for the work that director is doing. A spouse who is purely a non-working shareholder cannot receive an employer pension contribution from the company; they'd need to be a genuine working director. Worth getting accountant advice if your spouse's role is part-time or admin-only.

How do I draw the pension later?

From age 55 (rising to 57 in April 2028) you can access the pot. Standard rules: 25% can be drawn as a tax-free lump sum, capped at the Lump Sum Allowance of £268,275; the remaining 75% is taxed as income at your marginal rate when drawn. The Lifetime Allowance was abolished April 2024, but the Lump Sum and Death Benefit Allowance (£1,073,100) replaces it for tax-free-lump-sum purposes. Most contractors draw the pension flexibly, taking the 25% tax-free chunk as a lump sum and drawing the rest as income across years to manage their personal-tax position in retirement.

Can I move my old workplace pension into a SIPP?

Usually yes via a transfer. Transferring an old defined-contribution workplace pension into your contractor SIPP consolidates the pot and lets you choose investments. Defined-benefit (final salary) pensions are different, transferring out is a major decision, almost always requires regulated advice (legally required if the pot is over £30k), and is rarely the right choice for the typical contractor. Don't transfer a DB pension without a paid-for advice session with a pension transfer specialist (FCA-regulated, ~£2k–£5k cost).

What happens to the pension if my Ltd dissolves?

The pension is your personal asset, separate from the company. If the Ltd is struck off or liquidated, your existing pension pot remains intact. What stops is future employer contributions: your old Ltd can no longer pay in. If you start a new Ltd, the new company can resume contributions to the same SIPP/scheme. If you go umbrella or perm, salary-sacrifice via the new employer can keep the contributions flowing, see /calculator/salary-sacrifice-pension for that mechanic.