Accounting & Tax for International & Overseas Businesses
Specialist international tax accountants for overseas companies trading in the UK, UK companies with overseas operations, and non-resident directors — permanent establishment analysis, double taxation treaty relief, transfer pricing, withholding tax, controlled foreign companies and HMRC cross-border compliance.
UK Tax for International Businesses — What HMRC Focuses On
International businesses operating in or through the UK face a complex web of permanent establishment risk, double taxation treaty claims, transfer pricing rules and controlled foreign company charges. These are HMRC’s primary enforcement focus areas for cross-border transactions — and the most expensive to get wrong.
Permanent establishment (PE) is the threshold at which an overseas business becomes subject to UK corporation tax on its UK-source profits. A PE arises when: the overseas company has a fixed place of business in the UK through which it conducts its business (a physical PE), or when an agent in the UK has and habitually exercises authority to conclude contracts on behalf of the overseas company (a dependent agent PE). Remote working by UK-based employees for an overseas employer can trigger a PE — a significant risk for companies with UK remote workers post-pandemic. We assess PE exposure and, where it exists, structure UK operations to either acknowledge and comply with PE obligations or legitimately restructure to avoid a PE.
Double taxation treaties — the UK has over 130 in force — can eliminate or reduce UK withholding tax on dividends, interest and royalties paid to overseas companies. For example, the UK–USA treaty reduces UK withholding tax on dividends from 20% to 0–5% (depending on shareholding). Claiming treaty relief requires making a claim to HMRC (form DT-Individual or DT-Company) and, in some cases, obtaining a certificate of residence from HMRC to present to the overseas tax authority. Many businesses overpay withholding tax by not claiming treaty relief.
Transfer pricing — documented in the OECD’s Transfer Pricing Guidelines — applies to transactions between UK and overseas related parties. HMRC requires that intercompany prices (for goods, services, IP licensing, loans) reflect the arm’s length principle — i.e., what would be agreed between independent parties. The UK’s transfer pricing rules apply to SMEs as well as large businesses where the related party is in a non-qualifying territory. We prepare transfer pricing documentation in OECD format and defend it in HMRC enquiries.
Controlled Foreign Company (CFC) rules prevent UK multinationals from diverting profits to low-tax overseas subsidiaries. If a UK-resident company controls an overseas company that is subject to a lower effective tax rate than 75% of the UK rate, a CFC charge may apply — attributing the subsidiary’s profits to the UK parent. The CFC rules have detailed exemptions (full distribution exemption, exempt period, low-profits exemption) that, properly structured, can avoid the charge. We assess CFC exposure for all UK companies with overseas subsidiaries.
✅ Key Services for International & Overseas
- ✓ Permanent establishment analysis & structuring
- ✓ UK corporation tax for overseas companies
- ✓ Non-resident landlord scheme compliance
- ✓ Double tax treaty relief claims
- ✓ Transfer pricing documentation (OECD format)
- ✓ Withholding tax management (dividends, interest, royalties)
- ✓ Controlled Foreign Company analysis
- ✓ UK subsidiary incorporation & setup
- ✓ Non-resident director obligations
- ✓ Cross-border VAT structuring
- ✓ Customs duty for overseas-owned UK operations
- ✓ Annual accounts & Companies House compliance
What International & Overseas Businesses Face — and How We Solve It
Businesses in This Sector We Regularly Serve
US Companies Entering the UK Market
American businesses establishing UK operations — PE analysis, UK subsidiary incorporation, US-UK treaty planning and US tax provision support.
UAE & Middle East Businesses in the UK
GCC-based companies with UK customers or operations — PE assessment, UK CT compliance, double tax treaty entitlement (UAE-UK treaty from 2016).
Indian Businesses with UK Operations
Indian companies with UK subsidiaries, agents or employees — India-UK treaty planning, transfer pricing for intercompany services.
Non-UK Directors of UK Companies
Non-resident individuals who are directors of UK companies — UK director obligations, treaty relief on fees, UK self-assessment requirements.
2026 Outlook — Tax & Finance for International & Overseas
HMRC’s Cross-Border Anti-Avoidance team significantly increased its activity in 2025. Transfer pricing enquiries and PE investigations are at a 5-year high, with HMRC focusing particularly on: (1) overseas companies with UK-based employees working on UK customer contracts; (2) intercompany service arrangements where the UK entity is consistently loss-making; and (3) IP licensing arrangements where royalties flow to low-tax territories. Being prepared with documented transfer pricing policy and PE analysis is essential — not optional.
The OECD Pillar Two (Global Minimum Tax) — 15% minimum effective tax rate for large multinationals — has been implemented in UK law from January 2024 for accounting periods beginning on or after 31 December 2023. It applies to UK-headquartered multinationals with global revenues above €750 million. For mid-market international groups below the threshold, HMRC’s Qualified Domestic Minimum Top-up Tax (QDMTT) could capture them in future threshold reductions. International groups should model their Pillar Two exposure now.
UK non-domicile regime changes — the abolition of the remittance basis from April 2025 and its replacement with a 4-year foreign income exemption — significantly changed the UK tax position of non-domiciled individuals. Non-UK individuals considering UK residence now benefit from a 4-year exemption from UK tax on foreign income and gains during their first 4 tax years of UK residence (provided they were non-UK resident in the preceding 10 years). This is a significant incentive for overseas high-net-worth individuals and business founders considering UK relocation.
Digital services taxation — the UK’s Digital Services Tax (DST) at 2% on revenues from UK users of social media, search engines and online marketplaces remains in force for 2026, with revenues above £500m and UK revenues above £25m. For large international tech companies, DST represents a fixed obligation. HMRC’s DST compliance team actively monitors qualifying platforms.
Frequently Asked Questions — International & Overseas
Your overseas company is subject to UK corporation tax only if it has a permanent establishment (PE) in the UK — a fixed place of business or a dependent agent. If there is no UK PE, UK-source trading profits are not subject to UK CT. However, UK-source income (dividends from UK companies, UK property income, UK-based IP royalties) may be subject to UK withholding tax regardless of PE.
UK withholding tax (WHT) applies to certain payments made by UK companies to overseas recipients — dividends, interest and royalties are the main categories. The basic UK WHT rates are 0% (dividends), 20% (interest and royalties). Double tax treaties typically reduce or eliminate these rates — but only if you actively claim treaty relief by filing the correct HMRC form and, in some cases, obtaining a residence certificate.
For large multinationals, UK transfer pricing documentation must follow the OECD 3-tier structure: Master File, Local File and Country-by-Country Report. For SMEs, the documentation requirement is less prescriptive — but HMRC requires that intercompany pricing can be demonstrated to be arm’s length. We prepare Local File documentation in OECD format for SME clients with material related-party transactions.
Yes — this is one of the most common unintended PE exposures in 2026. A UK-based employee who habitually concludes contracts, negotiates price and terms, or represents themselves as the company’s face to UK customers may create a dependent agent PE. The risk depends on the employee’s actual authority and day-to-day activities — not just their job title. We conduct a PE risk assessment for all clients with UK remote workers for overseas employers.
You must register for UK VAT if you make taxable supplies in the UK above the VAT threshold (£90,000 per rolling 12 months), or if you are an overseas seller of goods to UK customers via an online marketplace (the marketplace may collect VAT on your behalf if you are non-UK established). Services provided by overseas businesses to UK VAT-registered businesses are generally subject to the UK reverse charge — no UK VAT registration required unless you also make B2C supplies in the UK.
4 Costly Mistakes — and How to Avoid Them
A UK PE can arise through a dependent agent — even a self-employed sales representative who habitually closes deals for you in the UK. Post-pandemic, remote UK employees are a major source of unintended PEs. Assess your UK workforce’s activities, not just your physical presence.
UK companies deduct withholding tax at source on royalty and interest payments to overseas recipients — unless treaty relief is claimed. Many overseas recipients never file the treaty relief claim, paying full UK WHT indefinitely. Claimed retrospectively, WHT can be reclaimed for up to 4 years.
HMRC enquiries into intercompany arrangements target businesses without contemporaneous documentation. A brief transfer pricing policy memo, benchmarking study and annual review costs a fraction of the professional fees that HMRC enquiry defence generates. Document now, while the transactions are current.
A UK subsidiary of an overseas company must comply with all UK Companies Act requirements — annual accounts filing, confirmation statement, director duties, persons with significant control. Non-compliance results in Companies House striking-off and, potentially, personal liability for directors.
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International Tax Specialists — PE, Treaties & Transfer Pricing
Book a free international tax review. We assess your UK PE exposure, treaty entitlements and transfer pricing position — and create a compliant, tax-efficient structure.