My Spouse Wants to Help in the Business

Tax-efficient structures by profit level, and the settlements legislation trap

The most tax-efficient way for a spouse to help in a UK business depends on profit level and business structure. At £30k profit, keep it simple — sole trader plus Marriage Allowance (£252/year). At £40k–£60k, employing your spouse at up to £12,570 is often the cleanest win. At £80k+, a husband-and-wife company with 50:50 ordinary shares plus pension contributions gives the best flexibility — provided you avoid alphabet-share games and dividend waivers that trigger HMRC's settlements legislation under ITTOIA 2005 Part 5 Chapter 5.

Last reviewed: 26 May 2026

Guidance, not advice. We explain the rules, we don't assess your situation. Always seek financial or tax advice from your accountant, or contact HMRC. Read our editorial scope →

Partnership between spouses

A husband-and-wife partnership is governed by the Partnership Act 1890. There is no formal incorporation — you simply register the partnership with HMRC using forms SA400 (partnership) and SA401 (individual partner). Each spouse files their own SA return with a partnership supplement. The profit split must be genuine. The Partnership Act presumes equal split absent a written agreement, but HMRC can challenge a 50:50 split if the actual work, capital and risk are wildly unbalanced. Newstead v Frost established that a partnership exists where there is a genuine business carried on with a view to profit, in common. Sham splits get unwound. Worked example — £80k profit: • Sole trader: PA £12,570 + £37,700 basic + £29,730 higher rate. Income tax ≈ £19,432. • 50:50 partnership: each spouse has £40,000. Each: PA £12,570 + £27,430 basic. Income tax each ≈ £5,486 × 2 = £10,972. • Saving: ~£8,460/year before NIC. Caveat: partners have joint and several liability for partnership debts. The non-active spouse takes on real legal exposure — consider an LLP if that worries you.

Employing your spouse

If you are a sole trader or Ltd, you can put your spouse on the payroll. The salary is deductible as an ordinary business expense provided four tests are met: • Real duties (genuine work, recorded) • Reasonable pay (what a third party would be paid) • Real payment (actually paid from business account to personal account) • Paper trail (employment contract, payslips, RTI submissions) The family worker exemption from National Minimum Wage is extremely narrow — for most arrangements NMW applies. Optimal salary is typically at the Personal Allowance of £12,570 (no income tax, minimal Class 1 NI) — this also preserves their state pension entitlement. From April 2025 the Employment Allowance is £10,500 (and the £100,000 secondary Class 1 cap was abolished), so most small employers pay no employer NI on the first £10,500. Single-director Ltds cannot claim EA — adding a spouse as a second employee unlocks it.

Ltd with spouse as shareholder — dividend splitting

ITTOIA 2005 Part 5 Chapter 5 (especially s.624) defines a 'settlement' very widely — any arrangement whereby income is diverted to another person. Dividends to a spouse can fall inside the rule. The saving grace is the outright gifts exemption: a gift of property between spouses that carries 'substantially the whole interest' and is not 'wholly or substantially a right to income' is excluded. Jones v Garnett (Arctic Systems) [2007] UKHL 35: Mr Jones traded through a Ltd. He and his wife subscribed for 1 ordinary share each at incorporation. He did the work; she did light admin. Dividends were paid 50:50. HMRC tried to tax all the dividends on him under s.660A. The House of Lords held that the gift of the share at incorporation was an outright gift of property (an ordinary share carrying full voting + capital rights, not just a right to income) — so the exemption applied. Post-Arctic, HMRC accepts ordinary shares subscribed for at incorporation but scrutinises: alphabet shares, dividend waivers, shares transferred immediately before known dividends, and arrangements where the non-working spouse has no real involvement and no real risk.

Safer vs dangerous structures

Safer (Arctic-shaped): • Both spouses subscribe for ordinary shares at incorporation • Both have genuine, demonstrable involvement (even if light) • Shares are ordinary with full voting and capital rights • Dividends are paid pro-rata to shareholding • No waivers, no pre-dividend transfers Dangerous (settlements risk): • Alphabet shares created later to flex income each year • Dividend waivers between spouses to redirect income • Shares transferred to non-working spouse immediately before declaring a dividend • Non-working spouse with zero involvement and zero risk • Documentation that obviously post-dates the arrangement If in doubt, write the structure down at incorporation and stick to it. Reactive restructuring is what gets taxed.

Dividend waivers

HMRC treats spousal dividend waivers as a textbook settlement indicator. The Tribunals have repeatedly held that the waiver creates a bounty in favour of the other shareholder, taxable on the waiver-er under s.624. A typical attack: husband and wife each own 50% of a Ltd. Wife waives her dividend so the company can declare a larger dividend that only flows to husband — or vice versa. HMRC re-attributes the waived income to the original shareholder. Result: tax with no benefit. There are narrow commercial uses (e.g. one shareholder forgoing dividends until another has been repaid for funding the business), but as a routine spousal planning tool, waivers should be avoided.

Employing children

Under 13: generally not allowed. 13–15: light work only, with a local authority work permit; hours and types of work are tightly restricted by by-laws. 16+: full-time work allowed; National Minimum Wage applies (age-banded). A child's personal allowance is £12,570 — so a genuine wage for genuine work can be received entirely tax-free for the child and remains CT-deductible for the company. HMRC routinely challenges: • High wages paid for trivial tasks (£8,000 for 'social media admin' done in 20 minutes a week) • Wages above the going market rate for the task and age • Lack of any timesheet or evidence of work performed Keep a contract, real records, and pay through PAYE in the normal way.

Marriage Allowance

ITA 2007 ss.55A–55E allow a lower-earning spouse (with income below the Personal Allowance) to transfer £1,260 of PA to a basic-rate paying spouse. This saves up to £252/year and can be backdated four tax years (up to £1,260 total). Neither spouse can be a higher-rate or additional-rate taxpayer in the year. It is also lost if the lower earner uses the full PA (e.g. once you start paying them a salary up to £12,570). Useful for: low-profit sole traders where the spouse has no income, retired couples with one income, or households below the higher-rate threshold. Conflicts with: employing the spouse at the PA level (the PA is now fully used).

Pension strategy for couples

Ltd companies: • Employer contributions to a SIPP for each spouse-employee are CT-deductible and not subject to employer or employee NI • Each spouse has an Annual Allowance of £60,000 (subject to tapering at very high income) • Total pension drain on company profit: up to £120,000/year between two spouses Sole traders + non-earning spouse: • The trading spouse contributes personally and gets income tax relief at marginal rate • A non-earning spouse can still contribute up to £3,600 gross per year (£2,880 net) into a pension and receive 20% top-up — useful for long-term household tax planning Pensions are usually the single largest tax-efficiency lever for a couple running a business together.

Structures by profit level

Different profit levels suit different structures. The table below is indicative — exact answers depend on other income, pensions, and risk appetite.

Typical spouse structures by combined profit (2025/26)

Combined profit	Typical structure	Why it works
~£30k	Sole trader + Marriage Allowance	Cheapest admin; £252/yr MA recovers basic-rate band
£40k–£60k	Employ spouse up to £12,570	Uses spouse's full PA, deductible from trading profit
£60k–£90k	Partnership or small Ltd	Splits taxable profit to keep both spouses in basic rate
£80k–£120k	Ltd, 50:50 ordinary shares, pensions	Maximum flexibility; AA £60k each
£120k+	Bespoke planning — specialist advice	AA tapering, ANI £100k trap, BADR, FIC considerations

Settlements red flags vs green flags

Red flags (HMRC will look closely): • Non-working spouse holds a large dividend share with no involvement • Alphabet shares used to flex income year by year • Routine dividend waivers between spouses • Shares transferred to a spouse immediately before a known dividend • Pay or share rights that bear no relation to work or capital risk • Documents and minutes obviously back-dated Green flags (defensible position): • Genuine work performed and recorded (timesheets, emails, minutes) • Both spouses bear real commercial or financial risk • Ordinary shares of one class, subscribed for at incorporation • Reasonable, market-rate splits of profit, pay, or dividends • Written employment contract / shareholders' agreement from day one • Independent professional advice taken and on file

Statute references: ITTOIA 2005 Part 5 Chapter 5; Jones v Garnett [2007] UKHL 35; ITA 2007 ss.55A-55E; Partnership Act 1890; NMW Regulations 2015.

Frequently asked questions

What happens if I miss the Self Assessment deadline?+

The Self Assessment deadline is 31 January (online filing) for the previous tax year. Miss it and HMRC apply an automatic £100 penalty. Beyond that: £10 per day from 3 months late (capped at £900), 5% of tax due at 6 months late, and another 5% at 12 months late, under Schedule 55 of the Taxes Management Act 1970. If you have a genuine reason (serious illness, bereavement, technical issue with HMRC's systems) you can appeal with evidence; HMRC accepts reasonable excuse appeals in most genuine cases.

Do I need an accountant or can I file Self Assessment myself?+

Legally you can file Self Assessment yourself via gov.uk for free, most simple sole-trader returns (single income source, basic expenses) are realistic to self-file. An accountant adds real value when: your trading profit is above £40,000 (extraction-strategy decisions matter), you have multiple income streams (PAYE + self-employment + property + dividends), you've crossed the £90,000 VAT threshold, you're considering incorporation, or you have an HMRC enquiry. Expect to pay £400-£1,500/year for a typical sole-trader accountant; the cost is itself a deductible expense.

How do payments on account work?+

When your Self Assessment tax bill exceeds £1,000 for the first time, HMRC requires payments on account toward NEXT year's tax. Half the current bill is due 31 January (alongside the current bill); the other half is due 31 July. So your first January after crossing the threshold can hit with a double-bill: last year's balance + first payment on account. Adjust via Form SA303 if you expect next year's income to drop substantially. Payments on account don't apply if more than 80% of your tax is collected via PAYE.

Can HMRC challenge my profit split with my spouse?+

Yes. HMRC can challenge any profit split that does not reflect genuine commercial reality. For partnerships, they look at actual work performed, capital contribution, and risk borne. For Ltd dividend splits, they apply the settlements legislation in ITTOIA 2005 Part 5 Chapter 5. Jones v Garnett (Arctic Systems) [2007] UKHL 35 confirmed that ordinary shares subscribed for from outset benefit from the spouse exemption for outright gifts. But alphabet shares, dividend waivers, or shares transferred immediately before known dividends are scrutinised heavily and routinely re-attributed to the working spouse.

What are alphabet shares and why are they risky?+

Alphabet shares are different classes of ordinary share (A, B, C…) issued so dividends can be voted to different shareholders in different amounts each year. They are sometimes pitched as a flexible way to split income with a spouse — but HMRC treats them as a strong indicator of an arranged settlement under s.624, particularly where the non-working spouse has a different class with no real economic risk. The Arctic Systems protection only clearly applies to ordinary shares with full rights subscribed for at incorporation. Alphabet shares should be avoided as a routine income-shifting tool.

Can I employ my teenage child?+

Children under 13 generally cannot be employed at all. Those aged 13–15 may do light work but need a local authority work permit and the hours are tightly restricted. From 16, full-time work is allowed and the National Minimum Wage applies. A working child has their own £12,570 personal allowance, so reasonable pay for genuine work is tax-free for them and CT-deductible for the business. HMRC scrutinises high wages paid to children for simple tasks (envelope stuffing, social media admin) and will disallow amounts above what a third party would have been paid.

Is dividend waiver tax-efficient?+

It is rarely safe as routine planning. A dividend waiver is where a shareholder formally gives up their right to a dividend so that more cash flows to other shareholders. HMRC views this as a near-textbook settlement indicator under ITTOIA 2005 s.624 — particularly between spouses — and Tribunals have repeatedly taxed the waived dividend on the original shareholder. The exemption for outright gifts to a spouse generally does NOT apply where the gift is of a right to income (a waiver). Use waivers only in genuine commercial cases (e.g. one shareholder being paid back from the company via dividends after personally funding a venture), not as an income-shifting tool.