US LLC vs UK Ltd: the verdict at a glance
The right structure turns on one variable: your UK tax residence. While UK resident, a US LLC exposes you to the reverse-hybrid double-tax trap described in our guide to UK tax on a US LLC; a UK Ltd keeps everything in one system. Once genuinely non-resident, the LLC's disadvantages largely fall away.
| Decision factor | US LLC | UK Ltd |
|---|---|---|
| How HMRC sees it | Opaque: distributions taxed as foreign dividends | UK company: salary and dividends, no mismatch |
| How the US sees it | Transparent: members taxed on profits as they arise | Opaque in both countries |
| Double-tax risk while UK resident | High: effective rates reported above 60%, HMRC illustrates above 75% | Low: one system, relief works |
| Best owner profile | Genuinely non-UK-resident members | UK residents, and anyone who may return within 5 years |
| Tax on company profits | No US entity-level tax if transparent; members taxed instead | Corporation Tax at 19% (small profits) to 25% (over £250,000) |
| Exit flexibility when leaving the UK | Form it only after non-residence is established | Keep and run from abroad, or close via strike off or MVL with capital treatment |
| Reform outlook | HMRC consultation open to 31 July 2026: transparent treatment for individuals, prospective only | No change needed |
Why a US LLC double-taxes UK residents
The US treats an LLC as transparent by default: a single-member LLC is disregarded and a multi-member LLC is a partnership, so members pay US tax on profits as they arise. HMRC generally concludes the opposite: its guidance (INTM180050) states that the profits of a Delaware LLC belong to the LLC in the first instance, not the members, so it taxes a UK-resident member only when profits are distributed, as a foreign dividend.
For 2026/27, dividends above the £500 allowance are taxed at 10.75% in the basic-rate band, 35.75% in the higher-rate band and 39.35% at the additional rate (GOV.UK). The trap: the US has already taxed the same profit as it arose, at federal rates of up to 37% plus any state tax. Because the UK taxes a different event at a different time with a different character, double tax relief often cannot bridge the gap: HMRC's consultation illustrates an effective rate above 75%, with stakeholders reporting rates above 60%.
The Anson case does not reliably fix this. In Anson v HMRC [2015] UKSC 44 the Supreme Court allowed one member treaty relief on specific findings about Delaware law, but HMRC treats the decision as fact-specific and keeps opaque treatment as the general rule. Separately, an LLC managed and controlled from the UK can itself become UK tax resident, a risk covered in company tax residence and CFC rules.
The live HMRC consultation: a fix is proposed, not law
On 10 June 2026 HMRC published a consultation on the taxation of UK-resident individual members of US LLCs and other reverse hybrids, closing at 11:59am on 31 July 2026 (GOV.UK). The lead option is to let UK-resident individual members of eligible reverse hybrids treat their holding as transparent for income tax and capital gains tax, so the UK taxes the underlying profits as they arise, matching the US.
Three limits matter. It covers individuals only: the consultation confirms no equivalent legislation would be introduced for UK-resident corporate members. It is prospective: transparent treatment would apply for tax years following the introduction of new legislation, with no start date announced and no relief for double tax already suffered. And it is a consultation, not law; the detail could change or stall.
The practical read: if you already hold an LLC, the direction of travel is encouraging, but you cannot plan around it yet, and it is no reason to form one while still UK resident.
When a US LLC works well
A US LLC is a genuinely good vehicle for a genuinely non-UK-resident owner. Once you are non-resident under the statutory residence test, the UK generally has no claim on the LLC's non-UK profits, so the mismatch has nothing to bite on. What remains is a simple, flexible US structure: pass-through taxation, no entity-level federal tax, and credibility with US clients and payment platforms, whether you head to the US itself (see moving to the US from the UK) or a third country.
Two disciplines keep it clean. Keep management and control outside the UK: run it from a UK kitchen table and it can become UK resident or acquire a UK permanent establishment (see running a UK company from abroad). And stay honest about return plans: come back within five years and the temporary non-residence rules can pull income and gains from your time away back into UK tax, and you are back in the mismatch.
An LLC always brings US filing obligations (federal returns, state fees and forms such as 5472 for foreign-owned single-member LLCs). Horizon advises on the UK side; the US filings are handled by our US partners (Enrolled Agents and CPAs), whom we coordinate for you.
When a UK Ltd remains better
A UK Ltd wins while you are still UK resident, and usually remains the better hold until your departure is executed. The company pays Corporation Tax at 19% on profits up to £50,000, rising to 25% above £250,000 with marginal relief between (GOV.UK), and you extract value through salary and dividends with no mismatch: both countries see a UK Ltd as opaque.
The Ltd also degrades gracefully when you leave. You can keep it and run it from abroad, or close it with capital treatment: on a strike off, distributions totalling £25,000 or less are taxed as capital under section 1030A CTA 2010 (legislation.gov.uk), and above that a Members Voluntary Liquidation distributes any size of reserves as capital, with Business Asset Disposal Relief taxing qualifying gains at 18% for disposals from 6 April 2026 within the £1 million lifetime limit (GOV.UK). Our guide to closing a UK company when leaving the UK works through both routes.
An LLC formed while you are UK resident starts life inside the trap, and unwinding it later is messier than never entering it. If your business is UK-facing, or your exit date could slip, the Ltd's optionality wins.
The leaving-the-UK timeline that makes each work
Sequencing decides most of the tax. The pivot is the date you become non-UK resident, ideally with split-year treatment so the departure year divides into a UK part and an overseas part. Model your dates with our SRT calculator and pressure-test the move with the relocation planner.
If you keep or close the UK Ltd
- Before departure: settle Corporation Tax, VAT and PAYE, and decide the closure route while you still control the timing.
- Take a capital distribution while still UK resident if you might return within five years: close-company distributions taken while temporarily non-resident can be taxed in the year you come back, and from 6 April 2026 that charge applies whether the profits arose before or after you left.
- Watch the two-year TAAR: winding up for capital treatment and then starting a similar business, in the UK or abroad, within two years can re-tax the distribution as a dividend.
- If you keep the Ltd, document where board decisions are made after you leave, so its residence position and your non-resident director obligations stay defensible.
If you want the US LLC
- Form it after your non-residence is established, not before: an LLC acquired while UK resident is taxed under today's opaque rules, whatever the consultation eventually delivers.
- Confirm your split-year date and keep UK day counts and ties inside your SRT budget.
- Keep the LLC's management and control, and key decision-making, outside the UK.
- Line up US compliance from day one: federal and state filings are handled by our US partners (Enrolled Agents and CPAs), whom we coordinate for you.
- For a third-country destination, Horizon advises on the UK side and coordinates with a trusted local adviser for that country's treatment of LLC income.
