Specialist Tax Advice for Seafarers, Offshore Workers & Expats

Whether you work onboard merchant vessels, cruise ships, yachts, offshore installations or overseas land-based projects, our team understands the specialist tax challenges you face. From Seafarers’ Earnings Deduction and Non-Residency claims to service company solutions and HMRC compliance, we offer clear, practical advice tailored to your circumstances.

We believe tax support should be straightforward, transparent and stress-free. That’s why we provide fast tax refunds, honest guidance, no hidden fees and flexible payment options designed to work around your career and lifestyle.

When your work takes you across borders, you need a tax specialist who understands the journey.

Our Core Services

Seafarers’ Earnings Deduction Claims (SED)

Seafarers’ Earnings Deduction allows qualifying individuals to claim up to 100% tax relief on earnings from working onboard ships outside the UK. We help ensure your claim is structured correctly, fully compliant and protected from costly HMRC challenges.

FAQs and more

Non-Residency Claims

If you work overseas in offshore industries, oil rigs or foreign land-based roles, you may qualify for tax exemption through Non-Residency status. We guide you through the rules, eligibility and ongoing compliance needed to maintain your status.

FAQs and more

Land Based Offshore & Deep Sea Worker Tax Support

Tax rules for offshore workers can be complex and highly specialised. We support deep sea oil rig workers, marine contractors and land based offshore professionals with clear advice that helps reduce tax liabilities while keeping everything compliant.

FAQs and more

Service Companies Incorporated

For contractors and professionals who do not qualify for SED or Non-Residency relief, operating through a UK limited company may provide a more tax-efficient structure. We help set up and manage service companies with full accountancy support and IR35 guidance.

FAQs and more

Why choose Haven Tax?

Over 30 Years of Specialist Experience

We work closely with every client, providing straightforward advice, proactive support and clear communication throughout the year — not just during tax return season.

Personal, Practical Support

We work closely with every client, offering straightforward advice and proactive support throughout the year—not just at tax return time.

HMRC Compliance You Can Trust

Our team helps ensure your claims, tax returns and company structures remain fully compliant while protecting your entitlement to valuable exemptions and reliefs.

Transparent Pricing

No hidden fees, no surprises — just honest pricing and flexible payment options designed to work around your circumstances and career.

Supporting Clients Worldwide

No matter where your work takes you, Haven Tax supports clients across the globe with specialist UK tax advice, helping them stay compliant while maximising available exemptions and reliefs.

Happy Customers

In 2013 I ran into some big problems with HMRC due to a poor choice of accountant. One of my colleagues suggested I contact Mark@HavenTax. It has turned out to be one of the best pieces of advice I have ever been given

The last 5 - 6 years have been very tough on a personal level but Mark has been with me throughout, offering quality advice and making sure this situation was resolved in the correct manner to avoid any further issues with HMRC. With Mark you simply get facts on what is right or wrong, he will never tell you what you would like to hear.

I will use Haven Tax for the rest of my career and cannot recommend them highly enough to anybody looking for a company who really do know the rules surrounding taxation for expats and offshore workers.

Graeme D

I am a chief Office in the Merchant Navy, working offshore, and I have been a member with Haven Taxt for the past 20+ years and I have been working with Mark Broadbent and his father, Richard, before him, since then.

Mark has done a tremendous job with myself through the years, as with many others that I know, who are also member with Haven Tax. I highly recommend Haven Tax to anyone working at sea and offshore who are looking for a tax advisor.

Haven Tax are a no-nonsense, hard-working company whom have responded to all my calls and questions politely and promptly. They are very good at keeping you informed of any developments or issues that may arise on the way, during and given tax year and are very thorough with the paperwork and keeping you well informed of your present status for qualification during your tax year.

Thank you!

James L

I have been using Haven Tax Service Ltd since 2010 after they were recommended to me by a fellow work colleague after | was let down badly by my previous accountant.

Mark and the team at Haven Tax service Ltd have been excellent to work with over the years, I have found them to be very professional and diligent at their duties.

If I ever have questions or Queries they respond promptly and have always given me the correct advice and guidance regarding any issues that have arisen and nothing ever seems to be a problem for them to handle.

For the person working in the Offshore Oil industry especially overseas I would not hesitate to recommend Haven Tax service Ltd for your accounting needs and I plan to continue to use them long into the foreseeable future.

Colin M

Welcome to Haven Tax