Living in the United Kingdom does not remove an American citizen’s obligation to file US taxes. Whether working in London, running a business in Manchester, or retiring in the British countryside, Americans abroad may still need to report their worldwide income to the Internal Revenue Service (IRS).
Managing taxes across two countries can be complicated. US citizens living in the UK may need to consider the Foreign Tax Credit, Foreign Earned Income Exclusion, foreign bank account reporting, UK pensions, and investment accounts such as ISAs.
Choosing the right tax firm can make these obligations easier to manage, particularly when dealing with both straightforward annual returns and more complicated international tax situations.
For Americans preparing their 2026 tax returns in 2027, here are five established US expat tax firms worth considering.
- Universal Tax Professionals – Best for Personalized US Expat Tax Services
Universal Tax Professionals is a CPA-led US expat tax firm specializing in tax preparation, compliance, and advisory services for Americans living overseas.
Founded in 2013 by Josh Katz, CPA, the firm serves Americans in more than 150 countries, including the United Kingdom. Its services cover everything from straightforward annual US tax returns to complex international tax matters involving foreign businesses, investments, and previously unfiled returns.
One of the firm’s distinguishing features is its personalized approach. Every client is assigned a dedicated accountant who becomes familiar with their tax situation and serves as their primary point of contact.
This can be particularly valuable for Americans in the UK whose financial circumstances change over time, such as purchasing property, starting a business, receiving foreign investment income, or preparing for retirement.
Key Services
Universal Tax Professionals provides a broad range of US tax services, including:
- US federal and state income tax returns
- FBAR and FATCA reporting
- Streamlined Filing Compliance Procedures for delinquent taxpayers
- Foreign business reporting, including Forms 5471, 5472, 8858, and 8865
- PFIC reporting and Form 8621
- International tax planning and advisory services
The firm also handles situations involving controlled foreign corporations, GILTI, and other complex reporting requirements that may affect Americans who own UK limited companies.
Its US expat tax services are particularly relevant for individuals who want ongoing professional support rather than preparing their returns independently.
Best suited for: Americans in the UK seeking a dedicated accountant, individuals with complex foreign investments or businesses, and taxpayers who need assistance becoming compliant with past US filing obligations.
For Americans who have missed previous filing deadlines, the firm’s Streamlined Filing services can also help eligible taxpayers address outstanding returns and foreign account reporting requirements.
- Greenback Expat Tax Services – Best for Coordinated US and UK Tax Filing
Greenback Expat Tax Services specializes in tax preparation for Americans living overseas and provides services specifically for US citizens residing in the UK.
The firm works with US CPAs and Enrolled Agents and offers a remote filing process designed for expatriates.
An important feature for UK residents is Greenback’s ability to coordinate US tax preparation with UK Self Assessment services through its UK tax professionals.
This can be useful for Americans who want assistance managing tax obligations in both countries without independently coordinating multiple providers.
Its services include US federal tax returns, foreign income reporting, FBAR filing, and assistance with previously unfiled returns.
Best suited for: Americans seeking coordinated US and UK tax preparation through one provider, particularly those with employment, self-employment, or rental income.
- Taxes for Expats – Best for Established Online Tax Preparation
Taxes for Expats is an established tax preparation service focused on Americans living outside the United States.
The company offers a fully online process, allowing clients to provide tax information, upload documents, and communicate with tax professionals remotely.
Its services cover annual US income tax returns, foreign income reporting, FBAR filings, and Streamlined Filing Compliance Procedures.
For Americans living in the UK, the firm can assist with common US tax matters involving UK employment income, foreign tax credits, and overseas financial accounts.
Taxes for Expats may appeal to individuals who prefer a structured online process and professional preparation without visiting a physical office.
Best suited for: Americans with relatively straightforward or moderately complex US tax filing requirements who prefer an established remote tax preparation service.
- Bright!Tax – Best for Professional US Expat Tax Preparation
Bright!Tax is a US expat tax preparation firm focused on helping Americans meet their tax obligations while living abroad.
The company provides professional assistance with US federal income tax returns and international reporting requirements, including foreign income exclusions, foreign tax credits, and foreign financial account reporting.
Its services also include assistance for Americans who have fallen behind on their US tax filings.
For UK residents, Bright!Tax is an option for those who want their US tax returns prepared by professionals familiar with the additional reporting requirements associated with living overseas.
Best suited for: Americans looking for professionally prepared US expat tax returns and support with common international tax reporting obligations.
- MyExpatTaxes – Best for Software-Based US Expat Tax Filing
MyExpatTaxes takes a different approach from traditional accounting firms by offering software designed specifically for Americans living abroad.
Its platform guides users through the US tax filing process, including questions involving foreign earned income, foreign tax credits, and overseas financial accounts.
Depending on the service selected, users can prepare their returns through the software or obtain additional professional review and assistance.
For Americans in the UK with relatively simple tax situations, this approach may offer a convenient alternative to a fully accountant-led service.
However, individuals with complicated foreign business structures, investments, or international tax planning needs should carefully assess whether software-based preparation is appropriate.
Best suited for: Americans with straightforward US tax returns who prefer a guided, technology-based filing experience.
Comparing US Expat Tax Firms in 2027
The five providers offer different approaches to US expat tax preparation. The most suitable option depends on the complexity of the taxpayer’s finances and the level of professional assistance required.
| Tax firm | Notable focus | Service approach |
| Universal Tax Professionals | Personalized service and complex international tax matters | Dedicated accountant |
| Greenback Expat Tax Services | Coordinated US and UK filing | Professional tax preparation |
| Taxes for Expats | Online US expat tax compliance | Accountant-prepared returns |
| Bright!Tax | US expat tax preparation and reporting | Professional tax preparation |
| MyExpatTaxes | Guided expat tax software | Software with professional support options |
What Should Americans in the UK Look for in a US Tax Firm?
Selecting a tax provider involves more than comparing preparation fees. Americans living in the UK often have financial arrangements that receive different tax treatment in the United States.
For example, a UK Individual Savings Account (ISA) may offer tax advantages under British law, but those advantages do not automatically apply under US tax rules. Certain investments held within an ISA may also trigger additional reporting requirements.
UK pensions, foreign rental properties, and ownership interests in British limited companies can create further complications.
Before choosing a provider, Americans should consider whether the firm has experience with their specific circumstances, offers ongoing support, and can handle additional international tax forms when necessary.
It is also important to establish whether the provider prepares only US returns or can arrange assistance with UK tax obligations.
