British Citizens Moving to the United States: A Corrected UK–US Tax & Residency Guide (2026 Update)
Relocating from the UK to the United States involves synchronising two very different systems of tax, immigration status, and residency determination. This guide provides a corrected, fact-checked overview based on guidance from HMRC, IRS, USCIS, and U.S. state tax authorities as of late 2025. UK Residence: When Do You Stop Being Tax Resident? The UK uses the Statutory Residence Test (SRT) to determine tax residency. If you leave mid-tax year, you may qualify for split-year treatment . This means only part of your income is taxed in the UK, and you must report it via Self Assessment. UK rental income remains taxable in the UK after you move. Other UK-source income, such as interest or dividends, may be classified as disregarded income for non-residents and may not be subject to UK tax. US Immigration Status: What You Can and Cannot Do Your immigration status governs what you may lawfully do in the US—not the number of days present. Visitors under ESTA or B-1/B-2...