Sonya Manzor

Tax Partner

Sonya is Head of William Fry Tax Advisors.

Sonya advises both domestic and multi-national corporations across a range of sectors on Irish tax matters including corporate tax, VAT and stamp duty. She is a key member of the firm’s Inward Investment group.

Her extensive experience includes advising on inward investment, IP and international tax structuring, reorganisations, real estate transactions and mergers and acquisitions.

Sonya is a member of the Law Society of Ireland and the Irish Tax Institute. She is a member of the Law Society Taxation Committee.

2026 Chambers Europe

"She is very patient, thoughtful and meticulous." "She is an excellent tax professional who provides clear advice." "Sonya stands out for her deep understanding of our business and her ability to provide clear, actionable advice even in complex situations." "Sonya is excellent. She has good technical knowledge and a good commercial approach. She is very responsive and has great experience."

2025 Legal 500 EMEA

"Sonya Manzor is a standout advisor and a leader in complex international tax planning matters." "Sonya Manzor is one of the leading tax advisors in Europe and is our go-to tax advisor in Ireland. She leads complex international tax advisory projects, along with sophisticated high value transactions and can always be trusted to deliver. She adds value on every project and has a depth and breadth of knowledge that is unmatched in the Irish market."

2025 Chambers Europe

"Sonya is one of the leading tax advisers in Europe, adding value to every project with a depth and breadth of knowledge that is unmatched in the market." "Sonya Manzor is excellent in terms of her technical knowledge and dedication to her clients." "She is super practical and a great communicator." "Sonya is a strong negotiator and her advice takes into account commercial issues."