Baker Tilly International has named Ian Halligan as its global head of tax, with the appointment becoming effective immediately.
Halligan will be based in Washington, DC, US, and will coordinate with tax professionals across the network.
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He has more than 30 years’ experience in international tax matters, advising expatriates, inpatriates and high-net-worth clients. Halligan began his career in London before relocating to Chicago in 2001, and has been practising in Washington, DC since 2022.
Dual-qualified in the UK and US, Halligan currently leads international tax services for Baker Tilly in the US.
Halligan said: “I am pleased to be taking on this role at an exciting time for both the Baker Tilly network and the tax profession internationally.
“Together with our tax teams around the world, I look forward to working with our clients to solve their taxation challenges and opportunities.”
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By GlobalDataBaker Tilly International CEO Francesca Lagerberg added: “I am delighted to welcome Ian to this role.
“Having a strong and aligned global tax capability is essential to driving our network’s efforts forward. Ian’s expertise in international tax combined with his knowledge of the network, means he is well placed to execute our global tax strategy effectively.
“I would like to take this opportunity to thank his predecessor Chris Johnson for his dedicated leadership and hard work over the past three years.”
The appointment follows Baker Tilly International’s recent announcement of record global revenues of $6.8bn for the year ending 31 December 2025 (FY25). The figure represents a 21% increase on the prior year.
