Utmost has published its latest edition of its quarterly technical briefing Navigator focusing on HNW expat tax regimes and how portability can outperform in long term wealth planning. The Winter 2026 edition is designed exclusively for the advisers of High and Ultra-High Net Worth (HNW and UHNW) individuals and examines special tax regimes in the UK, France, Portugal, Italy and Spain to uncover the pitfalls and how advisers can navigate them. Aidan Golden, head of group technical services at Utmost, said: “As global tax regimes for expats continue to evolve and cross-border complexity increases, advisers need technical depth, clarity and foresight more than ever. “This edition seeks to equip the intermediary community with practical insights into how portable solutions can protect long-term wealth outcomes across different jurisdictions. “Combining detailed analysis of specific tax regimes with real-world perspectives from our leadership and technical specialists, Navigator helps advisers make confident decisions for internationally mobile clients.”