UK Founders Have Near-Zero US Tax: Here Is Why

UK residents running US LLCs are in one of the most tax-friendly cross-border positions globally. The UK-US tax treaty is generous. Article 7 protects business profits. Dividends often drop to 0%. Most UK founders we serve owe zero US federal income tax on their LLC operating revenue.

Answer

UK founders running US LLCs typically pay zero US federal income tax on operating revenue. Article 7 of the UK-US treaty protects business profits unless you have a US permanent establishment. Dividend withholding drops to 0% in qualifying cases (15% standard) with W-8BEN-E filed. Royalty rate drops to 0%. Form 5472 + pro forma 1120 filing remains mandatory annually but no tax is owed.

By Zawwad, Founder & CEO, WyomingLLC by Topslice LLC.

Last updated May 20, 2026

Article 7: business profits protection

The treaty's Article 7 states that business profits of a UK resident are taxable only in the UK unless attributable to a US permanent establishment. Most non-resident UK founders running SaaS, agency, or service businesses have no US PE (no US office, no US employees, no US fixed place of business). So operating profits flow through as zero US federal tax.

Dividends, royalties, interest

For US-source FDAP (Fixed, Determinable, Annual, Periodical) income: dividends drop from default 30% to 15% standard or 0% in qualifying parent-subsidiary cases. Royalties drop to 0% under the treaty (one of the most generous globally). Interest drops to 0% for most types. All requires W-8BEN-E filed with each US payer.

HMRC treatment of US LLC income

HMRC's treatment of US LLCs is nuanced. They may treat the LLC as opaque (taxed as a corporation) or transparent (pass-through) depending on facts. This affects UK tax. Some UK founders use specific elections to ensure clean pass-through treatment. Consult a UK accountant familiar with US LLCs to align HMRC and IRS treatments.

Common UK founder structures

UK Ltd + Wyoming LLC: two entities, two markets. UK Ltd for local UK operations, Wyoming LLC for US-facing.
Sole trader + Wyoming LLC: simpler if you are pre-revenue or solo founder.
UK Ltd owns Wyoming LLC: holding structure for tax-efficient cross-border ops.

Frequently asked questions

Do I owe UK income tax on US LLC pass-through?

Generally yes through your UK Self Assessment. The treaty handles US side. HMRC handles UK side. Consult a UK accountant for specific filing.

Will Brexit affect the UK-US treaty?

No. UK-US treaty is bilateral, unaffected by Brexit.

Do I need W-8BEN-E on every payment?

Each US payer needs one on file. So Stripe, Amazon, AdSense, brand sponsors each need their own. Forms expire after 3 years; renew before expiration.

Is corporation tax in the UK lower than US tax on LLC?

UK corporation tax is 25% (or 19% for small businesses). US LLC pass-through with zero US federal tax means most of the burden is UK-side. Some founders use corporate restructuring to optimize.