Can US expats claim the QBI deduction on foreign business income?

Generally no. Section 199A defines qualified business income by reference to items effectively connected with the conduct of a trade or business within the United States. A US citizen running a business abroad, with the work performed abroad, does not meet that test, so the profits are not qualified business income even though they are fully taxable on the US return. Where the same person also owns part of a genuine US pass-through business, that share may still qualify.

Does a US LLC owned by someone living in the UK qualify for Section 199A?

Forming a US LLC does not by itself create US-connected income. A single-member LLC is generally disregarded, so the income is treated as earned by you directly, and the source of personal services income follows where the services are physically performed. If you work in the UK, the income is foreign-source and not effectively connected, so no deduction arises. The LLC's UK tax characterisation is a separate issue that also needs professional confirmation.

Is income from a UK limited company eligible for the QBI deduction?

No. A UK limited company is a foreign corporation for US purposes and is usually a controlled foreign corporation where a US person controls it. Its profits reach your US return through the controlled foreign corporation inclusion rules and through dividends, not as pass-through business income. Those amounts are neither effectively connected with a US trade or business nor derived from a trade or business you carry on personally, so Section 199A does not apply.

Can I claim both the foreign earned income exclusion and the QBI deduction?

They apply to different income, so they rarely overlap. The foreign earned income exclusion covers earned income for services performed abroad, which is exactly the income that fails the Section 199A effectively connected test. You can hold both positions on one return if you also have qualifying US business income, but note that the deduction is capped by reference to taxable income less net capital gain, so a large exclusion can indirectly reduce it.

What is a specified service trade or business for QBI purposes?

A specified service trade or business includes fields such as health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, and investing, investment management, trading and dealing in securities, partnership interests or commodities, plus businesses whose principal asset is the reputation or skill of owners or employees. Engineering and architecture are excluded. Above an indexed taxable income threshold the deduction phases out and is then lost entirely; confirm current figures with IRS guidance.

Do UK employee salaries count towards the W-2 wage limitation?

No. The W-2 wage limitation depends on wages properly reported on returns filed with the Social Security Administration and properly allocable to qualified business income. Salaries run through a UK payroll do not meet that definition. For a business whose staff are in the UK and whose qualifying income comes from a smaller US operation, the wage limitation can substantially reduce or eliminate the deduction even where the underlying income clearly qualifies.

Section 199A QBI Deduction for US Expats in the UK

If you are a US citizen living in London and running a genuinely British business, you almost certainly cannot claim the Section 199A QBI deduction against those UK profits. The statute defines qualified business income by reference to items that are effectively connected with the conduct of a trade or business within the United States, and profits earned from work performed in the United Kingdom for a UK-operating business generally fail that test. The deduction is not lost because you live abroad; it is lost because the income is not US-connected. Where a founder genuinely operates on both sides of the Atlantic, part of the picture can still qualify, and that is where the planning lives.

What is the Section 199A QBI deduction and who can claim it?

Section 199A allows eligible taxpayers to deduct up to 20 percent of qualified business income from a qualified trade or business, plus a separate component for qualified REIT dividends and qualified publicly traded partnership income. It is available to individuals, and to trusts and estates, but not to C corporations. The deduction is taken below the line and is available whether or not you itemise, but it does not reduce adjusted gross income and it does not reduce self-employment tax. The overall benefit is capped by reference to taxable income excluding net capital gain.

The deduction flows from sole proprietorships reported on Schedule C, from partnerships and S corporations via Schedule K-1, and from certain rental activities that rise to the level of a trade or business. It is computed on Form 8995 or, where the wage and property limitations or the specified service rules apply, on Form 8995-A. The provision was originally enacted with a scheduled expiry date and has since been the subject of further legislation, so confirm its current status and the indexed threshold figures against IRS guidance before relying on any planning.

Certain categories are expressly carved out of qualified business income even where the underlying business qualifies. Understanding these exclusions matters for cross-border founders because a UK-resident US citizen's return is often dominated by exactly these items.

Capital gains and capital losses, and most items treated as capital
Dividends and dividend equivalents, and most interest income not properly allocable to a trade or business
Reasonable compensation paid to an S corporation shareholder-employee
Guaranteed payments to a partner for services rendered to the partnership
Certain foreign currency and notional principal contract gains and losses

Does the QBI deduction apply to foreign business income?

Generally, no. The definition of qualified business income requires that the qualified items of income, gain, deduction and loss be effectively connected with the conduct of a trade or business within the United States, applying the principles of section 864(c) with modifications appropriate to a domestic taxpayer. That single clause is what excludes most expatriate business income. A US citizen is taxed on worldwide income, but Section 199A does not follow worldwide income; it follows US-connected income. The two concepts diverge sharply for anyone whose commercial activity sits abroad.

This is a deliberate design feature rather than an oversight. Section 199A was enacted alongside a reduction in the corporate rate and was intended to support domestic pass-through activity. Congress paired it with an international regime that taxes foreign corporate earnings through separate mechanisms. There is a narrow statutory accommodation for income from sources within Puerto Rico in defined circumstances, which has no bearing on UK operations. If someone tells you your UK trading profits generate a 20 percent US deduction, ask them to point to the effectively connected income analysis that supports it.

What does effectively connected with a US trade or business actually mean?

Effectively connected income is a term of art borrowed from the taxation of non-resident aliens and foreign corporations. It first asks whether there is a US trade or business at all, which requires activity in the United States that is considerable, continuous and regular rather than sporadic or purely investment-like. Only if that threshold is met does the second question arise: which items of income are effectively connected with it. For services income, the source rules in sections 861 and 862 generally look to where the services are physically performed, which is the pivotal fact for most expatriate founders.

Practically, that means the location of your customers is rarely decisive. A UK-based consultant billing exclusively American clients is performing services in the United Kingdom, generating foreign-source income, and is not conducting a trade or business within the United States merely because the invoices cross the Atlantic. Conversely, a founder who spends meaningful time working in the United States, maintains a US office and employs US staff may well have a genuine US trade or business, part of whose profit is effectively connected. IRS guidance on effectively connected income sets out the framework.

Where the services generating the income are physically performed, day by day
Whether there is a fixed place of business, office or dependent agent in the United States
Whether US employees or contractors carry on core revenue-producing functions
Whether inventory is held, title passes or sales are concluded in the United States
Whether the US activity is continuous and regular rather than occasional

Can a US expat with a UK limited company claim the QBI deduction?

A UK limited company owned by a US citizen is a foreign corporation for US purposes and is very likely a controlled foreign corporation if the US owner or a small group of US persons controls it. Its profits do not appear on your return as business income from a pass-through; they appear through the controlled foreign corporation inclusion regime and through dividends when distributed. Those inclusions are not qualified business income. They are not effectively connected with a US trade or business, and they do not arise from a trade or business carried on by you personally.

That leaves the separate question of how those inclusions are taxed and relieved, which is where the real work sits. Depending on the facts, an election to be taxed at corporate rates on the inclusion may be advantageous, or it may not, and the analysis has to run alongside UK corporation tax, the dividend and salary mix, and the availability of credits. Reporting obligations are substantial: information returns for the foreign corporation, and separate reporting for any foreign disregarded entity or foreign branch, each carrying meaningful penalties for late or omitted filing.

Some owners have made a check-the-box election to treat the UK company as a disregarded entity or partnership for US purposes, so that its profits flow onto the personal return. That changes the character of the income and can simplify credit planning, but it does not manufacture a Section 199A deduction. The profits remain attributable to a trade or business carried on in the United Kingdom, and the effectively connected income test still fails. Election planning of this kind also has UK consequences and should never be made on US grounds alone.

Does a US LLC owned by a UK resident generate qualified business income?

Forming a Delaware or Wyoming LLC does not, by itself, create US-connected income. A single-member LLC is disregarded by default, so for US federal purposes the income is treated as earned directly by you. The entity's state of formation is not a source rule. If you sit in Manchester and perform all the work in Manchester, the income remains foreign-source personal services income, the LLC notwithstanding, and there is no qualified business income to deduct against.

There is a second trap here. A US LLC is frequently opaque or uncertain in its UK treatment, and HMRC's approach to US LLCs has been the subject of long-running litigation and published guidance. Founders sometimes create a genuine mismatch, where the UK taxes distributions as dividends while the US taxes profits as they arise, undermining the credit position on both sides. Before structuring around a US LLC for perceived Section 199A benefits that do not exist, get the UK characterisation confirmed in writing.

How is US-source consulting income treated when the work is done in the UK?

US-source and effectively connected are not synonyms, and neither one is satisfied simply by having American clients. For compensation for labour or personal services, the source is generally the place of performance. Fees earned by a UK-resident US citizen for advisory work carried out in London are foreign-source, are not effectively connected with a US trade or business, and do not qualify for the deduction. Withholding certificates you provide to US payers do not change the analysis; they address withholding, not the character of the income.

Where you split your working year, apportionment becomes necessary and contemporaneous records become essential. If a meaningful part of your engagement is delivered on the ground in the United States, part of the fee may be US-source and, if the US activity is continuous and regular enough to constitute a trade or business, part may be effectively connected. That apportionment must be defensible on a time and function basis, and it interacts with US state tax nexus and with the permanent establishment article of the US-UK treaty.

When does a K-1 from a US partnership or S corporation produce qualifying QBI?

This is where expatriate founders most often do have a genuine claim. A US citizen remains an eligible S corporation shareholder while resident abroad, and a US partnership interest continues to report through to you wherever you live. If a US operating business with US premises, US employees and US-performed services generates effectively connected income, your allocable share is qualified business income, and Section 199A can apply to it notwithstanding your UK residence.

The pass-through entity is required to report the information you need to compute the deduction, and the quality of that reporting varies. Ask for it early and read it against the K-1 itself. Reasonable compensation you take from an S corporation is not qualified business income, and neither are guaranteed payments from a partnership, so the operating agreement and payroll policy directly shape the size of the deduction. Where an entity has both domestic and foreign operations, the reporting must separate them.

Confirm the entity has separately stated qualified business income, W-2 wages and UBIA of qualified property
Check whether the entity has identified any activity as a specified service trade or business
Verify that foreign-branch or foreign-source income has been excluded from the reported QBI figure
Reconcile reasonable compensation and guaranteed payments, which never count as QBI
Keep the statement supporting the entity's allocation between US and non-US operations

How does the foreign earned income exclusion affect the QBI deduction?

The foreign earned income exclusion and Section 199A rarely meet, because they apply to different income. The exclusion under section 911, claimed on Form 2555, covers earned income for services performed abroad, precisely the income that fails the effectively connected test. So there is usually no overlap to manage: excluded foreign earned income is not qualified business income, and qualified business income from a US trade or business is not excludable.

The interaction that does matter is arithmetic. Because the overall deduction is capped by reference to taxable income reduced by net capital gain, anything that compresses taxable income can compress the deduction. A large exclusion, significant itemised deductions or substantial capital gains can each reduce the amount of the deduction you actually realise on genuinely qualifying US business income. Model the return as a whole rather than testing the components separately.

How do foreign tax credits interact with the Section 199A deduction?

Foreign tax credits relieve double taxation on foreign-source income; Section 199A reduces US tax on US-connected business income. Because the two apply to different baskets of income, one does not directly feed the other. UK corporation tax or UK income tax paid on your British operations is claimed as a credit on Form 1116 in the appropriate category, subject to the limitation formula, and IRS guidance on Form 1116 sets out the sourcing and allocation mechanics.

The indirect interaction is again about the limitation fraction. Reducing US taxable income through Section 199A can reduce the US tax against which foreign credits are measured, which in some fact patterns increases unused credits carried forward. That is not a reason to forgo the deduction, but it is a reason to run the return in both configurations. Where the same activity is taxed in both countries, the US-UK treaty and its business profits and relief-from-double-taxation articles also need to be considered.

What are the SSTB rules and do they matter for cross-border founders?

A specified service trade or business is restricted under Section 199A once taxable income exceeds the indexed threshold, with the benefit phasing out over a defined range and disappearing above it. The listed fields include health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, and investing, investment management, trading and dealing in securities, partnership interests or commodities, together with any trade or business whose principal asset is the reputation or skill of one or more owners or employees. Engineering and architecture are specifically excluded from the list.

For the readership this article is written for, the SSTB rules bite hard. Fund principals, advisers, lawyers and consultants with US operations frequently sit above the threshold, so even a properly structured US pass-through may deliver little or no deduction. Anti-abuse provisions in the regulations address attempts to strip out administrative or ancillary functions into a separate non-SSTB entity, so cosmetic separation of a services business is not a viable answer. Confirm current threshold and phase-out figures with IRS guidance rather than working from memory.

How do the W-2 wage and UBIA limitations work for a business split across two countries?

Above the threshold amount, the deduction for each qualified trade or business is capped by a formula based on W-2 wages paid by that business, or a combination of W-2 wages and the unadjusted basis immediately after acquisition of qualified property held and used in the business. The definition of W-2 wages depends on amounts properly reported on wage returns filed with the Social Security Administration, and the wages must be properly allocable to qualified business income.

That definition is unforgiving for cross-border groups. Salaries paid to UK employees through a UK payroll are not W-2 wages, so a business whose people sit in London and whose qualifying income arises from a modest US operation can find the wage limitation collapsing the deduction to a fraction of 20 percent. The same logic applies to qualified property: assets deployed in the UK trade do not support a deduction attributable to a US trade or business. Aggregation rules may help where entities are commonly controlled and meet the regulatory tests.

What should HNW founders splitting a business between the US and UK actually do?

Start by mapping economic reality before mapping structure. Identify where value is created, where people work, where contracts are concluded and where risk sits, and only then ask which entity should hold which activity. If a genuine US business exists, house it in a US pass-through with real substance, real payroll and defensible transfer pricing, and the Section 199A analysis becomes a live question rather than an aspiration. If no US business exists, the deduction is not available and the planning effort belongs elsewhere.

Then weigh Section 199A against everything it competes with. A US pass-through with US employees creates US federal and state filing obligations, potential state nexus and payroll exposure, and may complicate the UK position for a UK-resident owner. In many cases the credit position, the controlled foreign corporation regime, the treatment of eventual exit proceeds and the interaction with UK residence and domicile rules matter far more to lifetime tax than a deduction that the wage limitation may curtail anyway.

Document days worked in each country and the functions performed on those days
Price intercompany services between the US and UK entities on defensible arm's-length terms
Check US state nexus and payroll obligations before establishing US substance
Review permanent establishment risk under the US-UK treaty in both directions
Confirm the self-employment position and any certificate of coverage under the US-UK totalisation agreement

What records support a QBI position on a cross-border return?

A Section 199A claim on a return that also reports UK income should be supported by a written analysis explaining why the relevant income is effectively connected with a US trade or business, and why the balance is not. Keep the entity's qualified business income statement, wage records, fixed asset schedules showing where property is used, and a travel and activity log. If the position is ever examined, the contemporaneous record is what distinguishes a considered allocation from a convenient one.

Coordinate the filing calendar as well. The US return, any extension, the information returns for foreign entities, foreign bank account reporting and the UK self assessment deadline all sit on different timetables, and a Section 199A computation that depends on a K-1 arriving late can force an estimated position. Agreeing the sequence of information flows with your US and UK advisers before the year end is the least expensive thing you can do to protect the claim.

None of this is a substitute for advice on your own facts. The effectively connected income question turns on detail that a general article cannot resolve, and the interaction with the controlled foreign corporation rules, the treaty and UK residence taxation is where costly mistakes are made. If you run a business that touches both the United States and the United Kingdom, work with a cross-border specialist who files on both sides and can model the whole position, and verify every threshold, rate and deadline against current IRS and GOV.UK guidance before you act.