Bill Dodwell’s appointment has been approved by the chancellor and OTS and he will begin in the new role on Monday. He will join the board at the same time.
He will succeed Paul Morton, who has been in the role since March 2017.
Dodwell joined OTS as a senior policy advisor in July last year after leaving his role as head of tax policy at Big Four firm Deloitte, where he had worked for more than 15 years.
At Deloitte, Dodwell was responsible for representations to HM Treasury, HMRC the OECD and EU.
A chartered accountant, Dodwell was the president of the Chartered Institute of Taxation (CIOT) between 2016 and 2017 and chaired the organisation’s technical committee.
He was also editor-in-chief of its Tax Adviser magazine and a member of the GAAR advisory panel.
During his career he represented both CIOT and Deloitte before the Public Accounts Committee, the Treasury Select Committee and the House of Lords Economic Affairs Committee.
“We are committed to simplifying the tax system and the Office of Tax Simplification is vital in providing informed advice on how to achieve this,” said financial secretary to the Treasury Mel Stride.
“Bill Dodwell has the capability and expertise to ensure the OTS continues this valuable work.”
Stride thanked Morton for his work during his two years at OTS, adding that he was confident he had left the department “on a strong footing”.
Morton announced he would be stepping down from the role in October because of his personal and family situation.
During his time at the OTS, Morton masterminded the OTS plan to offer protection to vulnerable gig economy workers through the taxation of online platforms such as taxi, courier and delivery firms.