US/UK Tax
Guiding US/UK-connected clients through every stage of their cross-border journey.
For over 60 years, we’ve helped people and businesses with US ties navigate the complexities of UK and US tax.
Whether you're filing returns, planning for the future, or managing trusts and pensions, our team is here to simplify the process and give you confidence in your decisions. We specialise in cross-border tax compliance and planning for individuals, entrepreneurs, and trusts. From tax returns to strategic advice on trusts, businesses, pensions, and expatriation, our team delivers clarity in a constantly evolving regulatory landscape. We offer hands-on support, proactive planning, and expert advice, so you can stay compliant and minimise your global tax liabilities.
Known for our reliability, and technical excellence, we deliver integrated advice from our single-office location in the City of London.
With over 70 dual-qualified US/UK tax experts, we’re one of the largest and most experienced teams in the UK authorised to represent taxpayers in front of the IRS and HMRC.
We work with:
Individuals and families
Entrepreneurs and senior executives
Companies, partners, and trusts
Financial institutions
Our approach is collaborative and tailored. We build relationships that last, so you always have a partner you can trust.
Our services
Life is full of surprises - but with the right support, you can be ready for whatever comes next. We'll help you manage your income streams and wealth, while staying compliant.
If you’re looking to manage and control your assets, trusts are a great solution often used for succession planning, asset protection, and tax mitigation. Our trust specialists have supported settlors, trustees, and beneficiaries with US ties, helping them navigate complex regulations with confidence.
Whether you’re a business owner, entrepreneur, or an employee who’s moving to the US or UK, our team can provide holistic tax advice to ensure that you plan and remain compliant.
Why work with us?
Navigating UK/US tax can be complex and confusing; that’s where we come in. We’ll help you navigate both tax systems so you can benefit from the best of both worlds.
We support you through your life’s key transitions
We provide tailored tax planning that evolves with your needs, ensuring long-term compliance.
Trusted by our clients and respected by our peers
We’ve built a reputation for reliability. We're trusted to deliver results while building long last relationships.
We're proactive, not just reactive
We anticipate issues and flag opportunities. Each solution is tailored to your position and shaped by the market.
Hear from our clients
Thank you for caring about my peace of mind and the rebuilding of my financial self-confidence. From the outset, I have felt as though I’m more than just another set of technicalities of international tax law and your kind attention to my wonderings and worries are appreciated more than I can say.
I have continued to use Buzzacott for my US tax returns since returning home to NY, as I have always valued your counsel over the many years that I have known you. You give practical tax advice and don’t overcomplicate the advice you provide.
Having worked with your firm as a client, I’ve gained a strong appreciation for the quality of your work and the professionalism of your team.
Thank you for caring about my peace of mind and the rebuilding of my financial self-confidence. From the outset, I have felt as though I’m more than just another set of technicalities of international tax law and your kind attention to my wonderings and worries are appreciated more than I can say.
I have continued to use Buzzacott for my US tax returns since returning home to NY, as I have always valued your counsel over the many years that I have known you. You give practical tax advice and don’t overcomplicate the advice you provide.
Having worked with your firm as a client, I’ve gained a strong appreciation for the quality of your work and the professionalism of your team.
2025 US tax guide
It can be difficult to stay on top of the key tax rates and allowances while managing daily life, but there are some important dates that you may need to be aware of.