Do I report my P11D on my US tax return?

You report the benefits, not the form. There is no line on Form 1040 for a P11D, and the sterling cash equivalents on it are UK statutory figures rather than US values. Each benefit has to be tested separately against US law: taxable or excluded, and if taxable, valued at fair market value under US principles. Some P11D items produce a larger US figure, some a smaller one, and some, such as private medical cover, disappear entirely.

Is my UK company car taxable in the US?

Yes, to the extent you use it personally, and commuting counts as personal use for US purposes. Business use is generally excluded as a working condition fringe. The US value is what it would cost to lease a comparable car at arm's length, and the Treasury regulations allow special methods including an annual lease value table and a cents-per-mile rule. None of that matches the UK computation, which applies a CO2-based percentage to the car's list price, so you need a contemporaneous mileage record.

My employer payrolls my benefits, so I have no P11D. What do I use instead?

Ask payroll for a benefit-level breakdown of what was included in your gross pay. When a benefit is payrolled, its value sits inside the pay figure on your payslip and P60, invisible as a separate item. You still need each benefit identified individually to apply US valuation rules. Note that GOV.UK confirms employer-provided living accommodation and interest-free or low-interest loans cannot be payrolled and must still be reported on a P11D, so you may have both streams.

Can I claim a foreign tax credit for the UK tax on my benefits in kind?

Generally yes for UK income tax, subject to the Form 1116 limitation and correct sourcing by where you performed the services. Two constraints bite. IRS.gov states that only income, war profits and excess profits taxes qualify, so Class 1A National Insurance, an employer social security charge, is not creditable to you. And you cannot take a credit for taxes on income you exclude under the foreign earned income or housing exclusions.

Are relocation payments taxable in the US if they were exempt in the UK?

Very often yes. GOV.UK exempts up to GBP 8,000 of qualifying relocation costs, including home purchase and sale costs, moving costs and bridging loans, subject to conditions on location and timing. There is no equivalent US exemption for a move abroad, and IRS.gov lists moving allowances among the items that count as foreign earned income unless otherwise excluded. So the exempt tranche will not appear on your P11D but still belongs in US gross income.

US Tax Return Preparation for Expats: UK Benefits

Q: Is UK private medical insurance taxable on a US tax return?

Normally no. Section 106 excludes employer contributions to an accident or health plan from the employee's gross income, and IRS Publication 15-B confirms this covers insurance premiums and medical expense reimbursements. Nothing requires the plan or the employer to be American, so a UK group scheme usually qualifies. That is the reverse of the UK position, where private medical cover is a reportable benefit in kind carrying Class 1A National Insurance, so the UK tax paid on it has no matching US income item.

US tax return preparation for expats working in the United Kingdom breaks down far more often on benefits in kind than on salary, and the reason is structural: the figure your employer reports on your P11D is a UK statutory output, not a US measure of income. Every taxable benefit you receive from a UK employer - a company car, private medical cover, subsidised accommodation, school fees, an interest-free loan - has to be brought into gross income on Form 1040 under United States rules, at United States values, translated into dollars and allocated to the US calendar year. The UK cash equivalent is a formula answer engineered for the UK tax code, and in most cases it is materially higher or lower than the amount section 61 of the Internal Revenue Code actually requires you to report. For a managing director, partner or business owner whose package is heavily weighted toward non-cash items, that gap is not a rounding difference. It drives the size of the foreign earned income exclusion you consume, the foreign tax credit limitation you can support, and whether the return holds up when someone reads it closely.

Where does US tax return preparation for expats go wrong on a P11D?

The single most common failure is transcription. A preparer receives the P11D, sees a column of sterling cash equivalents, converts the total at an annual average rate and adds it to the wage figure from the P60. That approach is fast, defensible-looking and wrong in both directions at once. It overstates income where the UK charges a benefit the US does not tax at all. It understates income where the US taxes something the UK exempts. And it produces a number with no US valuation authority behind it, which means that if the return is examined there is nothing to point to except a foreign form built for a foreign statute.

The second failure is assuming the P11D is complete. It is not. Many UK employers now payroll benefits, taxing the value through PAYE in real time rather than reporting it after year end. Where that happens the benefit appears inside the gross pay on the payslip and the P60, and it does not appear on a P11D at all. HMRC is explicit that living accommodation and interest-free or low-interest loans cannot be payrolled and must still be reported on a P11D, so a senior employee can easily end up with benefits split across two entirely different reporting streams. If your preparer only asks for the P11D, half the picture is missing.

The third failure is timing. The UK tax year runs from 6 April to 5 April. The US return is for the calendar year. A P11D covering 2025-26 straddles two US filing years, and a benefit taxed in the UK in one year may belong in a different US year entirely.

What does the IRS actually require you to include in income?

The starting position is deliberately wide. IRS Publication 15-B states the rule plainly: any fringe benefit you provide is taxable and must be included in the recipient's pay unless the law specifically excludes it. That is section 61 in operating form - gross income means all income from whatever source derived, and a benefit received in kind is income received. Nothing about the employer being foreign changes the analysis. A UK plc, an LLP, a US bank's London branch and a private company you control yourself all produce the same result: the value of what you receive is income unless a specific US provision takes it out.

The measure is fair market value. IRS.gov confirms this directly in its guidance on what counts as foreign earned income, which states that the fair market value of property or facilities provided to you by your employer in the form of lodging, meals, or use of a car is earned income. The same guidance treats allowances and reimbursements as earned income where they cover cost of living, overseas differential, family, education, home leave, quarters and moving, while carving out reimbursements you receive for expenses you incur on behalf of your employer under an accountable plan.

So the US question is never what HMRC charged you. It is what the benefit was worth, on US valuation principles, in the period you enjoyed it.

Why is the UK cash equivalent almost never the right US number?

Because the two systems are measuring different things. HMRC does not attempt to find the market value of most benefits. It applies statutory formulae designed for administrative simplicity and policy steer. The clearest example is the company car. GOV.UK guidance on working out the value of a car benefit directs employers to HMRC online tools, payroll software or P11D working sheet 2, with the calculation driven by the car's list price and its CO2 emissions. That is a policy instrument, not a valuation. Its purpose is to push fleets toward lower-emission vehicles, and the resulting cash equivalent bears no necessary relationship to what it would cost to hire that car in the open market.

The divergences run in both directions, and a competent US return has to identify each one separately:

UK taxable, US taxable, different number - company cars, car fuel, employer loans, accommodation. Both systems charge the benefit but compute it differently, so the sterling figure has to be rebuilt on US principles.
UK taxable, US not taxable - employer-paid private medical insurance is the headline case, because IRS Publication 15-B confirms that employer contributions to an accident or health plan are generally excludable from the employee's pay.
UK exempt, US taxable - relocation payments within the UK qualifying relocation exemption, certain welfare and workplace benefits, and mileage or subsistence paid at HMRC scale rates above what the employee actually spent.
UK taxable, US taxable, same or similar number - school fees, club and gym memberships, and most cash allowances, where both systems land close to actual cost.
UK exempt, US exempt - a genuine business expense reimbursed under an accountable plan, and benefits small enough to be a de minimis fringe under US rules.

How should a UK company car and fuel benefit be reported on Form 1040?

The US treats an employer-provided vehicle as two things at once. To the extent you use it for business, it is a working condition fringe, excludable because you could have deducted the cost yourself. To the extent you use it personally - which for US purposes includes commuting - it is compensation valued at fair market value. The general rule is what it would cost you to lease a comparable vehicle for the same period in an arm's length transaction, and the Treasury regulations offer special valuation methods, including an annual lease value drawn from a published table, a cents-per-mile method and a commuting rule, each with its own eligibility conditions.

None of that resembles the UK computation. The P11D value is a statutory list price including VAT and accessories - a manufacturer's published figure, not a market price, and one that includes a consumption tax with no US analogue. The appropriate percentage applied to it is set by emissions. UK law also charges commuting differently from US law, and the UK fuel benefit is a flat multiplier charge that ignores how much fuel you actually used privately, whereas the US analysis asks what the personal-use fuel was worth.

The practical consequence for a senior executive with a large, high-emission car is usually that the UK cash equivalent runs well ahead of the properly computed US inclusion. For someone with a low-emission electric vehicle used mostly personally, the position can reverse entirely: a small UK charge sitting alongside a substantial US one. The only way to know is to compute both, and to keep a mileage record capable of supporting the business-use split.

Is UK private medical insurance taxable on a US tax return?

Usually not, and this is where copying the P11D does the most damage. In the UK, employer-paid private medical cover is a classic reportable benefit in kind carrying Class 1A National Insurance. GOV.UK sets out only narrow exemptions - one health screening or medical check a year, up to GBP 500 of recommended treatment to help an employee return to work after 28 consecutive days unfit or absent, eye tests and corrective lenses required for screen work, flu vaccinations, and medical treatment for employees working overseas where the employer committed to pay in advance or paid the provider direct. Ordinary family private medical insurance falls outside all of those.

The US position is the opposite. Section 106 excludes employer contributions to an accident or health plan from the employee's gross income, and Publication 15-B confirms that this covers insurance premiums, medical expense reimbursements and payments for specific injuries. There is no requirement that the plan be a US plan or the employer a US employer. A UK group scheme provided by a London employer will normally meet the definition, with the result that a benefit HMRC charges in full is simply absent from the US return.

That creates a problem almost nobody addresses. You have paid UK income tax on an amount that does not exist for US purposes. The UK tax is still a foreign income tax, but there is no corresponding item of foreign source income on the US return for it to sit against inside the Form 1116 limitation. In a year where your credit position is already tight, that tax can be stranded. Identifying it, and where possible absorbing it against other general category income, is part of preparing the return properly rather than an afterthought.

How is employer-provided accommodation handled on each side?

UK living accommodation is one of the two benefits HMRC will not allow to be payrolled, so it stays on the P11D. The UK charge is built on the annual value or rent paid, with a further charge where the property is expensive, plus the running costs the employer meets - council tax, water and sewerage, heating, lighting, cleaning, repairs, decoration, furniture for daily use, and staff such as gardeners and cleaners.

For US purposes, Form 2555 instructions confirm that you use the fair rental value of housing provided by, or on behalf of, your employer. There is a narrow exclusion under section 119 for meals and lodging furnished for the convenience of the employer, on the business premises, with lodging required as a condition of employment. A Mayfair flat provided to an investment banker will not meet that test. What does help is the foreign housing exclusion: the amounts your employer pays for your housing are foreign earned income, and qualifying housing expenses can be excluded above a base amount and up to a limitation. The Form 2555 instructions for 2025 give that limitation as USD 39,000 for most locations, being 30 per cent of the USD 130,000 maximum exclusion, or USD 106.85 per day, with higher limits for the locations listed in IRS Notice 2025-16. London is a high-cost location, and checking the current notice rather than assuming the base figure is worth real money.

What about school fees, gym memberships and club subscriptions?

Employer-paid school fees for your children are taxable on both sides of the Atlantic, and there is no meaningful US relief. The section 127 educational assistance exclusion is capped at USD 5,250 a year under Publication 15-B and applies to the employee's own education, not a child's. Nor does the working condition fringe help, because your child's schooling is not an expense you could have deducted as a business cost. For a family with two children in London day schools this is often the largest single benefit item in the package, and it belongs in gross income at what the employer paid.

Club and gym memberships are taxable in the UK, and GOV.UK sets out three different mechanics depending on who contracts with the club. If the employer holds the membership and pays, it goes on the P11D with Class 1A National Insurance. If the employee holds the membership and the employer pays the provider, it goes on the P11D but Class 1 National Insurance is deducted through payroll. If the employee pays and is reimbursed, it is straightforward earnings subject to PAYE and Class 1. All three are US income. The distinctions matter for the compliance trail because they determine which UK form the amount appears on and which National Insurance charge attaches.

Professional subscriptions are the one item that often falls away on both sides. Where a subscription to a body relevant to your role is met by the employer, the UK exemption commonly applies, and for US purposes it is a working condition fringe because you could have deducted it as a business expense. Subscriptions to bodies unconnected with your duties get no relief anywhere.

How are interest-free and cheap employer loans treated?

This is the cleanest illustration of two systems producing two different numbers from identical facts. In the UK, a beneficial loan produces no charge at all where the combined outstanding balance is less than GBP 10,000 throughout the whole tax year. Above that, the benefit is computed by reference to HMRC's official rate of interest, which GOV.UK publishes as an average rate of 3.75 per cent for 2025-26, against 2.25 per cent for both 2024-25 and 2023-24. Loans are the second benefit HMRC will not let employers payroll, so they remain on the P11D.

The US applies section 7872 to below-market compensation-related loans. The imputed rate is the applicable federal rate for the relevant term, published monthly by the IRS, and the mechanics differ: foregone interest is treated as compensation transferred to the employee and then retransferred by the employee to the employer as interest. There is no GBP 10,000 equivalent, the rate is different, and the interest deemed paid back may or may not be deductible depending on what the loan funded. A large sterling bridging loan on a house purchase can therefore carry a UK benefit figure and a completely separate US imputed amount, neither of which substitutes for the other.

How do relocation payments and tax equalisation flow through the return?

The UK gives an exemption for up to GBP 8,000 of qualifying relocation costs, covering things such as buying or selling a home, moving costs, certain items for the new home and bridging loans, provided the employee's new home is reasonably close to the workplace, the old home is not, and the costs are paid before the end of the tax year following the year the employee started. Nothing in US law mirrors that exemption for a move abroad, and IRS.gov specifically lists moving allowances as an item that counts as foreign earned income unless otherwise excluded. So the first tranche of your relocation package can be entirely invisible on the P11D and fully taxable on Form 1040.

Tax equalisation adds a further layer. Under a typical policy the employer retains a hypothetical tax from your pay, which approximates what you would have paid had you stayed at home, and then meets your actual UK and US liabilities. Two consequences follow. First, tax the employer pays on your behalf is itself compensation to you, which produces the familiar gross-up cascade - the tax on the tax, then the tax on that. Second, the treatment of the hypothetical withholding depends on the wording of the policy, because it is not a payment of tax to any revenue authority and cannot be claimed as one. Where employer-paid foreign taxes have been brought into your income, they can generally be treated as your taxes for Form 1116 purposes, which is exactly why the gross-up has to be computed and documented rather than estimated.

A worked illustration: how far apart the two numbers can be

The following is an illustration only. Rebecca Hallam is a US citizen and a managing director at a London investment bank, a UK resident throughout, married with two children at a London day school. Her package for the year includes a company car, family private medical cover, school fees, an employer bridging loan and a relocation contribution. Sterling amounts are converted at an assumed 1.27 dollars to the pound.

Company car. Her employer's payroll produces a UK cash equivalent of GBP 21,800, roughly USD 27,700. On US principles the annual lease value of a car with a fair market value near USD 99,000 is around USD 25,300, and her mileage log shows 60 per cent business use, which is a working condition fringe. The US inclusion is therefore around USD 10,100 plus the value of privately used fuel. Transcribing the P11D would have overstated her income by well over USD 17,000.
Private medical insurance. UK cash equivalent GBP 4,200, about USD 5,300, fully charged in the UK. US inclusion nil under section 106. The UK tax on that GBP 4,200 has no matching US income item.
School fees. GBP 48,000 paid direct to the school, about USD 61,000. Taxable in full on both returns. No US exclusion applies, and section 127 does not reach a child's schooling.
Employer bridging loan. GBP 400,000 outstanding, interest-free. The UK benefit computed at the 3.75 per cent official rate for 2025-26 is GBP 15,000, about USD 19,100. The US imputed amount under section 7872 is computed separately at the applicable federal rate for the term and will be a different figure.
Relocation. GBP 8,000 of qualifying costs, exempt in the UK and absent from the P11D, about USD 10,200 of additional US gross income.
Net effect. Her US benefit income is far lower than her P11D on the car and medical cover, and materially higher on relocation, with the loan producing an entirely separate number. Copying the P11D total would have been wrong by five figures in both directions.

The point of the illustration is not the arithmetic. It is that five benefits produced five different reconciliations, and no single conversion factor would have produced the right answer for any of them.

How do benefits in kind affect Form 2555 and the foreign earned income exclusion?

Benefits in kind are foreign earned income where they compensate services performed in the United Kingdom, and Form 2555 is built to receive them. Part IV of the form has dedicated lines for noncash income - home, meals, car and other property or facilities - and separate lines for allowances and reimbursements covering cost of living and overseas differential, family, education, home leave and quarters. They are not an afterthought bolted onto the wage line; they have their own place on the form, and putting them there is part of what makes the return legible.

Two consequences follow for a high earner. Benefits consume the exclusion, which the Form 2555 instructions put at USD 130,000 for 2025, and for most senior UK-based executives that ceiling is exhausted by base salary alone, so the exclusion delivers little and the real work sits in the foreign tax credit. And the exclusion is contaminating: Publication 54 is blunt that you cannot deduct or exclude any item, or take a credit for any item, that is related to amounts you exclude as foreign earned income or foreign housing amounts. IRS.gov repeats the point for the credit specifically - if you elect to exclude either foreign earned income or foreign housing costs, you cannot take a foreign tax credit for taxes on income you exclude.

How do benefits in kind affect Form 1116 and foreign tax credit sourcing?

For most senior UK-based Americans the foreign tax credit does the heavy lifting, and benefits in kind affect it in three ways that are easy to miss.

Sourcing. Compensation is sourced by where the services were performed, normally on a time basis. If you spent working days outside the United Kingdom - New York, Frankfurt, Hong Kong - a proportionate part of your benefits is not UK source, even though HMRC charged the whole cash equivalent. That shifts the numerator of the Form 1116 limitation.
Basket integrity. Employment benefits belong in the general category. Keeping them there, rather than letting them drift into a wage total that has been assembled from mixed sources, protects the limitation calculation.
Creditability of the charge. Only income, war profits and excess profits taxes qualify for the credit, as IRS.gov states. Class 1A National Insurance is a social security charge borne by the employer, not an income tax borne by you, and it is not creditable on your return. Employee National Insurance is dealt with under the social security agreement between the two countries, not on Form 1116.

The mirror image of that last point is the medical insurance mismatch already described - UK income tax paid on a benefit the US does not recognise. Neither issue is visible if you work from the P11D total alone.

What compliance trail does an accurate return actually need?

The documents that matter go well beyond the P11D. A return that can be defended three years later is built on a file, not a single form. For UK-based clients we assemble the following as a matter of course:

P11D and P11D(b) for both UK tax years overlapping the US calendar year, together with the P60 and, where benefits are payrolled, the March and December payslips showing the benefit values inside gross pay.
The employer's benefit statement or global mobility summary, showing each benefit separately with its own valuation basis rather than a single total.
Car details - list price, CO2 figure, availability dates, and a contemporaneous mileage log supporting the business-use split for US working condition fringe purposes.
Loan documentation - principal, drawdown and repayment dates, any interest actually paid, and what the loan funded.
The tax equalisation policy itself, plus the hypothetical tax calculation and the year-end settlement statement, without which the gross-up cannot be computed.
Evidence of foreign tax actually paid and the date paid or accrued, and a workday calendar identifying days worked outside the United Kingdom for sourcing.
The exchange rate basis used. IRS.gov publishes yearly average rates, which are appropriate for income received evenly through the year, but a benefit conferred on a single date is better translated at the spot rate for that date - and whichever basis you choose should be applied consistently and recorded.

It is also worth knowing the UK timetable, because it determines when your source data actually exists. GOV.UK sets the deadline for submitting the P11D and P11D(b) and for giving employees their copy at 6 July following the end of the tax year, with Class 1A National Insurance payable by 22 July, or 19 July if the employer pays by cheque. Late P11D(b) penalties run at GBP 100 per 50 employees for each month or part month. That 6 July date sits after the June filing date available to Americans abroad, which is one of the main practical reasons a US return covering a UK package so often needs the October extension.

What changes when mandatory payrolling arrives in April 2027?

The source document most US preparers rely on is being retired in stages. GOV.UK has confirmed that mandatory reporting of benefits in kind through Real Time Information begins on 6 April 2027 for the most common benefits - medical benefits, company cars, vans, and car and van fuel - with a second phase from 6 April 2028. Employer-provided loans and accommodation are staying outside the mandatory regime because they are particularly burdensome to payroll, and will continue to be reported through existing end-of-year processes.

For a US return that means the benefits most likely to need rebuilding on US principles will vanish into a gross pay figure on a payslip, while the two that produce the largest and most technical divergences stay on a standalone form. Anyone preparing a US return from UK data after that point will need the payroll detail behind the gross pay line, not just the P60, and will need it split by benefit. It is worth asking your employer's payroll or mobility team now what benefit-level reporting they will make available, because the answer determines whether your US return can be built from primary evidence or from reconstruction.

Two further points survive the change. Payrolling has never altered the National Insurance position - Class 1A is still calculated and reported on form P11D(b). And none of it changes the US analysis. Whether a benefit reaches you through a P11D, a payslip or a mobility spreadsheet, the question on the US side is the same one it has always been: what was it worth, under US valuation rules, in the US tax year, and is there a specific provision that takes it out of gross income? Answering that benefit by benefit, with the working papers to support each answer, is what comprehensive US tax return preparation for a UK employment package requires.