Global tax clarity for internationally active businesses

Operating across borders brings opportunity, but also complex tax risk. Whether you're a UK-based company expanding internationally or an overseas business establishing a UK presence, the tax landscape can be challenging to navigate.

Our international tax team provides seamless, coordinated support to manage both UK and global tax obligations. Working closely with Grant Thornton colleagues in key jurisdictions, we help businesses stay compliant, structure efficiently and reduce exposure to double taxation. From corporate structuring to profit repatriation, we guide you through cross-border tax complexities with practical, commercially aligned advice.

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Our international tax compliance and advisory solutions

Meet obligations efficiently while protecting profitability

Successfully managing international tax compliance requires a deep understanding of your global structure, operations and local filing obligations. We work closely with you to understand how your business operates, then deliver a coordinated compliance approach across all relevant tax jurisdictions.

Leveraging our international network, we ensure timely and accurate submissions, reduce duplication of effort and help you maintain strong governance. Whether you’re scaling across borders or operating an established multinational group, we provide the structure and support to meet your corporate tax obligations confidently and efficiently.

Structure your operations for sustainable tax efficiency

Whether you’re entering new markets or restructuring your group, our international tax team provides proactive advice tailored to your commercial objectives. We assess the tax implications of your inbound or outbound activity and help you plan accordingly.

Our support includes:

  • Corporate structuring and jurisdictional tax planning;
  • Double tax treaty optimisation;
  • Profit attribution and transfer pricing considerations;
  • International financing and debt structuring;
  • Profit repatriation strategies to manage withholding tax.

We ensure that your international tax strategy aligns with your commercial goals, is defensible from a tax authority perspective, and delivers long-term value.

Ensure your group’s residency aligns with your tax structure

Tax residency risk can undermine even the most well-planned international structures. We work with businesses to establish, monitor and manage the tax residency of their UK and overseas entities.

Our advice helps you:

  • Avoid unintentional UK tax exposure for overseas entities;
  • Document control and management procedures;
  • Ensure directors’ decisions align with residency requirements;
  • Maintain strong governance and defendable substance.

Clear residency status gives you confidence in your global tax position and protects your group from unexpected liabilities.

Mitigate UK tax exposure from overseas profits

The UK’s CFC rules can lead to UK tax charges on the profits of overseas subsidiaries, even when those profits are taxed abroad. We assess whether these rules apply to your group and develop practical mitigation strategies where risks exist.

This includes:

  • Reviewing group structures for CFC exposure;
  • Identifying qualifying exemptions and safe harbours;
  • Advising on restructuring options to reduce risk;
  • Supporting disclosure and documentation.

Our experience ensures your structure remains tax efficient while staying compliant with UK anti-avoidance legislation.

Meet global transparency requirements with confidence

Multinational groups with over €750m global turnover are subject to CBCR requirements. We help you stay ahead of thresholds, prepare accurate reports and submit in line with regulatory timelines.

We support with:

  • Determining whether CBCR applies;
  • Preparing key data elements across jurisdictions;
  • Aligning reporting with your global tax strategy;
  • Managing filing logistics and deadlines.

Accurate CBCR reporting demonstrates strong governance and protects your business from reputational and financial penalties.

Understand and prepare for global minimum tax rules

The OECD Pillar Two framework introduces a 15% minimum tax rate for large multinational groups. This complex new legislation has far-reaching implications, and early planning is essential.

Our team helps you:

  • Assess Pillar Two applicability based on group size and structure;
  • Model the impact on your global effective tax rate;
  • Prepare for new compliance and reporting obligations;
  • Align your wider tax strategy with emerging international standards.

We give you clarity on the rules and practical steps to manage them, so your business is prepared for the global tax shift.

Why Grant Thornton

We deliver coordinated international tax advice that supports confident decision-making and compliance across borders. Our collaborative, commercial approach means you get practical solutions, not just technical analysis.

With Grant Thornton, our clients receive:

  • Global coordination: Consistent advice delivered through our extensive international network;
  • Proactive risk management: Early identification and mitigation of cross-border tax exposure;
  • Commercial insight: Structuring advice aligned with your global business goals;
  • Compliance confidence: Accurate, timely filings that meet international standards.

Talk to our international tax specialists today to structure efficiently and stay compliant as your business expands across borders.