UK tax services for people with US connections
Looking for UK tax accountants for Americans in the UK? At US UK Tax Experts, we specialise in self-assessment tax returns, property and capital gains reporting, pension income reporting, and HMRC compliance, ensuring every filing is accurate and fully coordinated with your US obligations under the US-UK tax treaty.
Why American Expats Need Specialist UK Tax Experts
When it comes to handling UK tax services for Americans in the UK, relying on a general accountant is rarely enough. The combination of HMRC rules, US tax obligations, non-domicile status, and foreign income reporting creates complex challenges that require specialist knowledge. Without the right expertise, you risk paying more tax than necessary, missing reliefs, or facing penalties from HMRC.
By choosing experienced UK self-assessment tax accountants in London, you benefit from professionals who understand how UK tax laws interact with US tax requirements. We manage self-assessment returns, property and capital gains reporting, pension income reporting, and treaty relief claims to ensure your filings are accurate and you pay no more than the rules require.
Every American expat's tax situation is unique, and only dedicated specialists can provide the specialist UK tax filing needed to stay compliant, with income, investments and pensions reported consistently across both jurisdictions.
The numbers behind why this sits awkwardly between two systems.
How an engagement runs
Two authorities, one file. Here is what working together actually looks like.
- Review
We look at both sides together: what you file, where, and what has already been filed or missed.
- Position
We set out the treaty position and reliefs that apply to you, with the numbers behind each option.
- File
We prepare and submit to the IRS and HMRC, keeping the two sets of filings consistent with each other.
- Keep current
Two tax calendars means deadlines all year. We track them and tell you before they arrive.
What is included
The filings this service covers on both sides of the Atlantic.
Questions we are asked most
The ones that come up in almost every first conversation about this.
Not everyone does. It is generally required if you are self-employed, have untaxed income such as rent or dividends above the thresholds, or HMRC has issued you a notice to file. Being American does not by itself create a UK filing requirement, but it very often coincides with one.
Online returns and any balancing payment are due by 31 January after the tax year ends on 5 April. Penalties start immediately at £100 and escalate, with interest running on unpaid tax from the due date. Filing late is treated separately from paying late, so it is worth filing even if you cannot yet pay.
Usually the UK, because UK tax paid is what generates the credits used on the US return. Doing them in the wrong order tends to mean amending one of them afterwards, which is avoidable.
By the Statutory Residence Test, which weighs days spent in the UK against connecting factors such as family, accommodation and work. It is mechanical rather than a matter of opinion, which is helpful, but the day counting has to be accurate.
Rental profits are reportable and the rules on deducting mortgage interest have tightened considerably. If you are also a US person the same rental is reported to the IRS as well, on different rules, including depreciation the UK does not recognise.
Let's get both sides right
Tell us your situation and we will map out exactly what you owe, where, and when.