UK Digital Nomad TaxInternational Tax

UK Online Sellers: Operating From US but Selling to UK (Tax Residency Problem)

21 July 2025·Updated Aug 2025·6 min read·GuideIntermediate
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Key Takeaways

UK citizen moves to US, runs eCommerce selling to UK customers. Declares UK-source income to HMRC (subject to 20% UK tax). Also files US tax (subject to ~37% US tax if in US >6 months). Double taxation without treaty relief = 57% tax rate. AskBiz tracks income source, identifies relief options.

    The Double Taxation Problem#

    UK tax: resident on worldwide income. US tax: if physically present >183 days/year, taxed as resident. Both claim right to tax UK-source income.

    Tax Treaty Relief#

    US-UK tax treaty allows home-country tax relief. Example: owe £4K UK tax, £6K US tax = £10K before relief. With treaty: claim foreign tax credit. Pay whichever is higher (usually US), get credit against the other = ~£6K total.

    💡 Key Insight

    Tags income by source (UK, US, other).

    AskBiz International Income Tracking#

    Tags income by source (UK, US, other). Calculates tax liability in both jurisdictions. Shows relief available. "UK-source income: £50K. UK tax due: £10K. US tax due: £18.5K. With treaty relief: pay £18.5K total (US higher). Save £10K vs. double taxation."

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    📊 By The Numbers
    £4K£6K£10K£50K£18.5K
    Key Takeaways
    • UK citizen moves to US, runs eCommerce selling to UK customers.
    • Declares UK-source income to HMRC (subject to 20% UK tax).
    • Also files US tax (subject to ~37% US tax if in US >6 months).

    People also ask

    Do I owe UK tax if I move abroad?

    Yes, on UK-source income (customers, assets). Depends on tax residency status. Consult accountant.

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