BBUSINESS & CORPORATE TAX SERVICES – US & UK ADVISORS
As US & UK Tax Advisors, we help freelancers, small businesses, and international companies manage US corporate tax in the UK, HMRC compliance, Form 5471 filings, GILTI, and UK corporation tax returns. Our cross-border specialists simplify dual tax compliance so you can stay compliant and focus on growth.
Cross-Border Corporate Tax Services for UK & US Companies
As expert US UK Tax Advisors, we specialise in supporting businesses with operations across the Atlantic. From US corporate tax in the UK to HMRC compliance, our dual- qualified team ensures smooth, accurate reporting in both jurisdictions.
We provide expert guidance on Form 5471 compliance in London, GILTI and CFC reporting, UK corporation tax returns, and business structuring. Whether you are a freelancer, small business, or a UK company with US operations, our advisors deliver tailored solutions that keep you compliant.
Our goal is simple — to make dual tax compliance clear and efficient, helping you avoid double taxation and penalties while focusing on what matters most: growing your business.
Our Services
UK Tax Services for Americans in the UK – Expert HMRC Support
US Corporate & International Reporting
IRS filings for US citizens and businesses with foreign entities, including Forms 5471, 8858, and 8865, ensuring accurate and timely compliance to avoid costly penalties.
GILTI, CFC, and Foreign Shareholding Compliance
Guidance on Controlled Foreign Corporations (CFCs) and GILTI tax rules, aligning IRS requirements with HMRC obligations to prevent double taxation and ensure compliance.
UK Company Accounts & Corporation Tax Returns
UK company accounts and corporation tax returns, helping reduce liabilities and coordinating filings with US tax requirements for seamless cross-border compliance.
Structuring International Businesses (LLCs, LLPs, Ltd Companies)
We advise on the best structures for cross-border businesses, including LLCs, LLPs, and Ltd companies, ensuring tax efficiency and minimising risks under both IRS and HMRC rules.
Freelancer & Small Business Cross-Border Advisory
Our team supports freelancers and small businesses with dual reporting (US, UK), double taxation relief, and treaty planning—affordable, practical solutions for cross-border growth.
Cryptocurrency Tax Reporting (IRS & HMRC)
We help businesses and individuals report crypto gains, investments, and holdings correctly under both IRS and HMRC rules, ensuring compliance and avoiding penalties.
Why It’s Important to Have Specialist Corporate Tax Advisors
Managing business tax across the US and UK is highly complex, with different reporting rules, deadlines, and entity structures. A general accountant may not fully understand how IRS corporate tax rules interact with HMRC requirements, leaving businesses exposed to double taxation, missed filings, or costly penalties.
By choosing specialist US & UK corporate tax advisors, you gain the expertise needed to handle Form 5471 compliance, GILTI tax, CFC reporting, and UK corporation tax returns seamlessly. Our dual-qualified team ensures filings in both jurisdictions are aligned, accurate, and tax-efficient.
Every freelancer, small business, or international company faces unique challenges when trading across borders. Dedicated specialists provide the tailored advice and strategic planning required to protect profits, remain compliant, and support long- term growth.
Key Industry Insights:
19-25%
Combined effective corporate tax rates for US-UK businesses, varying significantly based on structure and planning.
Source: International Corporate Tax Report 2023
31%
Average tax savings achieved by multinational businesses through strategic corporate tax planning.
Source: Corporate Tax Optimization Study 2023
£500K+
Typical annual tax savings for mid-market businesses through proper US-UK tax structure optimization.
Source: Business Tax Planning Analysis 2023
Get in Touch
Managing cross-border taxes doesn't have to be complicated. Whether you're a US citizen living in the UK, a UK resident with US tax obligations, or a business operating internationally, our team of specialist US UK tax accountants in London is here to help.