
The UK taxes a directorship as an office, through PAYE and National Insurance. The US treats the same fee as self-employment income. Both can be right.
A UK board seat is an office, not a contract, and that one fact drives everything else. HMRC treats directors' fees as employment income, taxed through PAYE with Class 1 National Insurance alongside. The IRS starts from the opposite end and treats corporate director fees as self-employment income. One payment, two characterisations, and two social security systems with a claim on it.
HMRC's Employment Status Manual defines an office, following the case law, as a post which can be recognised as existing, whether it be occupied for the time being or vacant, with a sufficient degree of continuity to admit of its being held by successive incumbents, and office holders are automatically chargeable as employment income on its emoluments.
A director is the textbook case. HMRC puts it without qualification: a company director holds an office, and any earnings arising from a directorship are therefore chargeable as employment income and subject to Class 1 NICs.
That is why ordinary employment-status reasoning does not help a non-executive: control, substitution and mutuality decide whether a consultant is employed or self-employed, and none of them gets past the office. The Employment Income Manual states the consequence: fees received in respect of work carried out as a director are in strictness assessable on the director as employment income, and tax should therefore be deducted from those fees under PAYE by the company with which the office of director is held.
There is a route by which directors' fees are taxed as a company's income rather than the individual's, but it was not built for personal service companies. Since 6 April 2018 it sits in section 6(5) ITEPA. HMRC's conditions require that the director was appointed by a company other than the paying company, that the appointing company's profits are within the charge to income tax, and that by agreement the director must account to it for the fees. One of two further conditions must then be met: either the appointing company had the right to appoint the director by virtue of its shareholding in, or agreement with, the paying company, or the company is not one the director or a connected person controls.
A one-person consultancy usually fails both limbs. It holds no right to appoint anyone to a client's board - the individual was invited personally - and the individual controls it.
National Insurance mirrors this. Regulations 27(1) and (3) of the Social Security (Contributions) Regulations 2001 exclude directors' fees from Class 1 where a company has the right to appoint a director to another board, provided the fees are handed over and form part of that company's chargeable profits. The relief targets genuine nominee appointments, not a service company created to receive one fee.
Directors do not get a normal NIC earnings period. GOV.UK explains that contributions are worked out from their annual earnings rather than from what they earn in each pay period, using either the cumulative method, recalculated on total pay for the tax year so far each time the director is paid, or an alternative method that charges each payment on a period basis with a year-end reconciliation.
For a non-executive on quarterly or ad hoc fees, that matters. Irregular payments do not each receive a fresh threshold, and a single large fee late in the year is measured against the whole year, which can differ sharply from the equivalent monthly salary. Appointment or resignation part-way through a year has its own rules.
One nuance before assuming the regime applies at all: a director of a company not within sections 1 and 1043 of the Companies Act 2006 does not have an annual earnings period. Rates and thresholds change every year and are published on GOV.UK.
Here the systems part company. IRS Publication 525, under fees for services, states that corporate director fees are self-employment income, reported on Schedule C (Form 1040).
Self-employment tax follows from that characterisation. The IRS requires you to pay self-employment tax and file Schedule SE (Form 1040) where net earnings from self-employment were $400 or more, and adds that the rules apply no matter how old you are and even if you are already receiving Social Security or Medicare.
Two cautions. It is a starting point, not a conclusion: whether a particular board fee is net earnings from self-employment turns on that person's facts, including the trade or business they carry on and how the appointment is documented. And the UK's treatment does not settle it - PAYE and Class 1 deducted in London do not convert the payment into wages for US purposes.
So the same fee can attract UK Class 1 NICs as employment earnings and US self-employment tax as business income. The income tax treaty does not prevent that, because social security charges are not income taxes.
The instrument is the social security agreement. GOV.UK's NI38 guidance lists the countries with an agreement with the UK, and the USA is on that list. The IRS describes such agreements as existing for the purpose of avoiding double taxation of income with respect to social security taxes and as settling which country's system applies.
The evidence is a certificate of coverage.
The agreement decides, not preference, and the certificate should exist before the position is relied on. We set out the mechanics in US-UK social security and National Insurance: which country do you pay?.
Income tax is separate, and a US citizen cannot simply exempt the fee by treaty. Article 1(4) of the 2001 convention provides that a Contracting State may tax its residents, and by reason of citizenship may tax its citizens, as if this Convention had not come into effect. Relief therefore runs through the credit, not through exemption.
Basket allocation follows the character of the income. The instructions to Form 1116 describe general category income as including wages, salary, and overseas allowances of an individual as an employee and income earned in the active conduct of a trade or business, while passive category income covers dividends, interest, royalties and rents. A board fee is employment income to HMRC and business income to the IRS - either way it lands in the general category, which usually helps, because it can share a limitation with other general category earnings.
The limitation still bites. IRS Topic 856 states that the credit is the smaller of the foreign tax paid or accrued, or the US tax attributable to your foreign source income, and that unused foreign tax carries back one year and forward 10. Excess UK tax is not lost; it joins the carryover pool - see foreign tax credit carryovers.
Expect less relief than instinct suggests. A non-executive is an office holder, so the ordinary employee travel rules apply. GOV.UK's booklet 490 defines ordinary commuting as travel between a permanent workplace and home, a permanent workplace being one the employee attends regularly for the duties of the employment.
Its Example 6 is directly on point: a non-executive attending monthly board meetings at a banking group's London headquarters spends all or almost all of the time worked for that employer at a single workplace, so it is a permanent workplace and no relief for travel expenses is due. Home-to-board-meeting travel is commuting.
This case surprises people most, and it has two independent answers.
On income tax, the treaty has a dedicated provision. Article 15 (Directors' fees) of the 2001 convention provides that directors' fees and other similar payments derived by a resident of a Contracting State for services rendered in the other Contracting State in his capacity as a member of the board of directors of a company that is a resident of the other Contracting State may be taxed in that other State. It sits beside, not inside, Article 14 on income from employment and its short-stay conditions, so the instinct that a handful of days cannot create a UK charge comes from the wrong article - though the text turns on services rendered in the other State, so where meetings are held matters. HMRC adds that a non-resident director is chargeable under section 27 on general earnings from duties performed in the United Kingdom.
On National Insurance there is a concession, and Americans cannot use it. HMRC grants relief where the director comes from a country which does not have a social security agreement with the UK, the only UK work is attending board meetings, and the director attends no more than 10 board meetings in a tax year with each visit lasting no more than 2 nights, or a single meeting lasting no more than 2 weeks. The manual adds that where the director is within scope of an agreement the UK has with another country, the concession will not apply. The US has one - so a US-resident non-executive falls outside it and back onto the agreement's own rules, the opposite of the intuitive result.
Board appointments are agreed quickly, by people not thinking about payroll, and the characterisation ends up settled by default. The work is to settle it before the first fee is paid: whether PAYE and Class 1 must be operated, whether any company-receipt route is genuinely available, which country's social security system applies and what certificate evidences it, and how the UK tax will be credited in the US. Our US-UK expat tax service is built for exactly this, and the analysis for a partner in a UK professional firm is a close cousin - see UK LLP partners who are US citizens.
A licensed CPA or Enrolled Agent reviews and signs off every US filing; the UK side is reviewed by an ACCA-qualified accountant. If a board seat has been offered, or one is already generating fees that nobody has characterised, book a confidential consultation.
This article is general information, not tax or legal advice, and does not create a professional relationship. The treatment of directors' fees is highly fact-dependent and the rules change; rates, thresholds and concessions should be confirmed against current official guidance before you act.
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Reviewed by a CPA / Enrolled Agent. Last updated: 19 September 2026.
Official sources: HMRC ESM2502 | HMRC ESM4040 | HMRC EIM02504 | HMRC EIM02505 | HMRC EIM31943 | HMRC EIM40004 | HMRC NIM12003 | HMRC NIM12007 | HMRC NIM12013 | GOV.UK NI for company directors | GOV.UK 490 ch.3 | GOV.UK NI38 | GOV.UK CA9107 | 2001 UK-USA Convention | IRS Pub 525 | IRS SE tax | IRS SE tax abroad | IRS totalization agreements | IRS Form 1116 instructions | IRS Topic 856