Services
Trusted Strategic Partners
Extension of Your Team
When your clients face tax questions that cross UK–US borders, you need a partner you can trust — one who brings deep technical expertise while supporting and protecting the client relationships you’ve built.
DY USA works with accounting firms, wealth managers, attorneys, and other professional advisors to deliver reliable, specialized UK–US tax planning, compliance, and advisory support.
How We Help
Working as an extension of your team, we provide the clarity and technical depth needed to resolve complex cross-border tax issues.
With professionals based in both the UK and the US, we offer coordinated, consistent guidance so your clients receive clear, accurate answers and high-quality service every time.
OUR VALUE
We deliver the specialized technical expertise needed to solve UK-US tax and compliance issues as a trusted advisor to support your clients so you can stay focused on what you do best.
This is our niche — we focus exclusively on the intersection of US and UK tax systems.
We provide cross-border technical expertise, strengthening your client service while protecting the relationships you’ve built.
Get the level of support you need, exactly when you need it.
We simplify complex tax issues and translate them into practical, actionable guidance for clients.
We routinely work with national agencies in both jurisdictions and understand how to navigate their requirements and processes smoothly.
Testimonials
Trusted by clients facing tax issues on both sides of the Atlantic.
Individual
As a British citizen living and working in the United States, navigating cross-border tax requirements isn’t something I’d feel comfortable managing on my own. From day one, Rob Whittall and the DY USA team have made the process straightforward, clear, and stress-free.
They’re responsive, knowledgeable, and always willing to explain things in plain English, which gives me real confidence that everything is being handled correctly. It’s a huge weight off my shoulders knowing I have a trusted partner looking after both compliance and planning.
Working with DY USA has saved me time, removed uncertainty, and allowed me to focus on growing the business, rather than worrying about tax.
I wouldn’t hesitate to recommend them.
James Mitchell
Whitestown, Indiana
Business
We were setting up a new business in the US and our UK accountants were not able to provide the accounting expertise needed. I met with Rob Whittall through an introduction by our UK accountants and thought Rob was very impressive. He understood the differences between UK and US accounting and gave me confidence that he would be able to help us to safely navigate the challenges associated with starting up a new business in California.
DY USA worked with us on compliant tax filings with the IRS and California and exceeded my expectations.
The team at DY USA provides a positive mix of formal, professional service with a friendly personal approach. I trust in DY USA’s guidance, and their support is incredibly valuable. Their expertise has enabled me to focus on growing the business as opposed to trying to manage the myriad of accounting compliance that comes along with operating in the USA.
DY USA provides important accounting support (advice, guidance and compliance support) in a very responsive way. They assign a dedicated accountant to support our business, so we get access to someone who is familiar with our business and the way we work. This is very important to us.
Jamie Hammond
CEO, Adept Management, Carlsbad, UK
Business
Working with DY USA has given us real confidence that our US structure and tax obligations are set up properly. They take complicated issues and explain them in a way that makes sense, which saves us time and allows us to focus on running and growing our business.
Mike Richards
CEO & Founder, The Treasury Recruitment Company, London, UK / Clearwater, Florida, USA
Business Partner
We regularly refer clients to DY USA when they are expanding into the U.S. and facing complex tax, entity structuring, and compliance challenges that sit outside UK expertise. What stands out immediately is DY USA’s ability to explain complicated U.S. tax matters in a clear, practical way, while still being technically robust.
Our clients value the responsiveness, clarity, and human approach of the DY USA team. Expectations are consistently met, and often exceeded, particularly around cross-border coordination and avoiding unnecessary risk or surprises.
Having DY USA as a trusted partner means we can confidently support clients scaling internationally, knowing they are in safe hands from a US tax and compliance perspective. The collaboration feels seamless, aligned, and genuinely client-first.
Poonam Mawani
Director, Azuki Accounts, London
Individual
I am a dual US/British citizen, originally American, who has lived in the UK since 1974. In 2015, DY USA started looking after my US taxes after decades of doing it on my own, with assistance of, at best, variable quality. During the 11 years since, they have provided a consistently excellent service, helping me navigate the complexity of preparing my US returns more efficiently and with less stress than before. I particularly appreciate the personal attention that DY USA offers; it’s a great comfort to be able to communicate with friendly people I have come to know and trust.
Philip Gray
Edinburgh, UK
Business
We’ve really enjoyed working with DY USA and see them very much as a trusted partner rather than just an adviser. From the start, the team took the time to understand both our business and the realities of operating across the US and UK, which made a big difference. Their advice is always clear, pragmatic, and grounded in what actually works for us commercially.
Just as importantly, they’re extremely responsive and easy to work with. We always feel supported, well informed, and confident in the decisions we’re making with DY USA alongside us.
Dan Carroll
Managing Director, BMS Tech Sales Inc, London / Delaware
Business Partner
The reason we refer our clients to DY USA is simple, no one is as knowledgeable or as supportive to UK business navigating the US tax landscape than DY USA. The US tax system is incredibly complex and easy (and costly) to get wrong when you don’t know what you’re doing. DY USA has supported our clients for many years to communicate clearly what they need to know and provide them with honest and accurate advice for both their short-term needs and long-term goals.
If you are a UK business with US clients or offices, then there is no one better to support you with your trans-Atlantic tax needs than DY USA.
Will Pendleton
Head of Business Development, Workwell Global, London, England / Austin, Texas
DY USA DIFFERENCE
Professional advisors trust and value DY USA for our cross-border technical knowledge, transparent collaboration, personal approach, and ethical respect for the client relationships they bring us into.
of DY USA’s new business comes from referrals from clients and professional advisors
FOR ACCOUNTING FIRMS AND SERVICE PROVIDERS
When your clients face UK–US tax issues, partner with a specialist team that works as an extension of your firm. DY USA delivers precise cross‑border expertise while protecting the client relationships you’ve built.
Strengthen your team with proven cross-border tax expertise.
Give your clients the clarity and confidence they deserve to make tax decisions.
Answers
We work with US and UK accountants, tax advisors, legal firms, banks, payroll providers, and other professional service firms that support businesses expanding into or operating in the US.
No. Our goal is not to replace existing advisors but to complement them and serve as an extension of their team. We work closely with UK and other local advisors to ensure alignment across jurisdictions.
We focus on US-specific matters such as federal and state tax, compliance, reporting, and advisory. Our partners typically handle UK or local-country tax, statutory reporting, legal, or operational services.
No, we do not operate on a referral-fee model. Our priority is building long-term, trusted relationships that deliver the best outcomes for clients.
Our ideal clients are UK businesses with US activity or expansion plans who value proactive advice, clear timelines, and coordinated cross-border support.
As early as the potential US need is identified. US tax, compliance, and banking considerations often arise earlier than expected, even before revenue is generated.
Yes. Where appropriate, we are happy to introduce clients and partners to trusted professionals across banking, payroll, legal, and advisory services.
Simply reach out to discuss the client situation. We’re happy to join introductory calls, provide high-level guidance or help determine the right next steps.
*The FAQs provided are for general information purposes only. The information is not, and must not be treated as, professional advice.
