Cross-Border Tax Advice for Individuals and Businesses
Whether you are an internationally mobile individual, a foreign investor or a UK business with overseas operations, Newshams Tax Advisers provides expert, commercially focused international tax advice.
Speak with a Tax AdviserInternational tax sits at the intersection of multiple legal systems, treaties and domestic rules. Getting it wrong can be costly — both in terms of unexpected tax liabilities and HMRC compliance risk.
We provide clear, practical advice that cuts through complexity — helping individuals manage their UK tax position and businesses structure their cross-border operations efficiently.
Key takeaway: International tax advice covers how UK tax rules interact with foreign tax systems when individuals or businesses have cross-border interests. In the UK it centres on the Statutory Residence Test, double tax treaties, the non-dom (FIG) regime, transfer pricing and permanent establishment risk — ensuring income is taxed once, in the right country, with relief from double taxation.
Specialist US-UK tax advice for American citizens moving to London
Advice for Internationally Mobile Individuals
We advise expatriates, non-domiciliaries and internationally mobile individuals on all aspects of their UK tax position — from residence and domicile questions to foreign income, offshore assets and HMRC enquiries.
Whether you are arriving in the UK, planning a departure, or managing an existing position, we provide technically rigorous and commercially sensible advice tailored to your circumstances.
Non-residents disposing of UK residential property face specific capital gains tax (CGT) rules, and internationally mobile clients often need to coordinate UK planning with inheritance tax (IHT) exposure on worldwide assets.
- UK Statutory Residence Test (SRT) — determining and managing your residence status.
- Former non-domiciliaries — transitional planning following the abolition of the remittance basis.
- Pre-arrival structuring and exit planning for departing UK residents.
- Foreign income and gains — UK reporting obligations and mitigation.
- Double tax treaty claims and relief from overseas tax.
- Overseas Workday Relief (OWR) and split-year treatment.
- UK assets held by non-residents — CGT and ATED exposure.
- HMRC enquiries into residence, domicile and offshore matters.
Advice for UK and International Businesses
We help UK companies expanding overseas, and overseas businesses investing into the UK, to structure their operations efficiently and manage international tax risk.
From inbound acquisition structuring to transfer pricing and permanent establishment risk, we provide specialist input at every stage — working alongside transaction teams, in-house counsel and advisers.
- Inbound investment structuring — acquiring UK businesses or property.
- Outbound expansion — efficient UK group structures for overseas operations.
- Permanent establishment risk identification and management.
- Transfer pricing — policy design, documentation and HMRC enquiries.
- Hybrid and cross-border financing arrangements.
- Controlled Foreign Companies (CFC) rules.
- Withholding tax on dividends, interest and royalties.
- HMRC international tax enquiries and disputes.
Recent Experience
Advising a senior executive relocating to the UK on SRT, OWR and remittance basis planning.
Structuring the inbound acquisition of a UK technology business by an overseas corporate group.
Advising on the UK tax implications of offshore trust structures following the abolition of the remittance basis.
Reviewing transfer pricing arrangements for a UK subsidiary of a multinational group.
Assisting a departing UK resident with exit planning to mitigate UK CGT exposure.
Advising on permanent establishment risk for an overseas business with UK commercial activity.
Who We Work With
International Tax Knowledge Hub
Explore our detailed guides on every aspect of international tax — from the Statutory Residence Test to transfer pricing, permanent establishment, and the April 2025 non-dom reforms.
International Tax Frequently Asked Questions
Detailed answers with legislation references, practical examples and common pitfalls.
Related Services
Latest Articles & Analysis
International Tax Questions?
Speak with an experienced adviser about your cross-border tax position. We work with individuals and businesses across the UK and internationally.
Initial discussions are informal and without obligation.
Speak with a Tax Adviser