McKesson’s former head of tax joins Vertex

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement


McKesson’s former head of tax joins Vertex

Vertex, the corporate enterprise tax software and services provider, has hired an executive with more than 30 years experience as its new chief taxation officer.

William “Bill” Brennan was formerly vice president of tax for McKesson Corporation, a Fortune 500 corporation that develops and sells healthcare services and information technology. He has also had stints as director of taxes for GE Capital, the world’s largest non-bank financial institution, Con-Way, a freight and logistics company, and MagneTek, a digital power and motion control systems supplier. He is a certified public accountant who has practised at Deloitte and Ernst & Young.

His new company says Brennan “will provide insight and thought leadership” around tax department operations, global tax regulations and policies, and emerging tax industry trends, and will advise Vertex’s board of directors and senior management on the development of the company’s corporate enterprise tax solutions under Vertex® Enterprise.

more across site & shared bottom lb ros

More from across our site

Ryosuke Takemura, OECD policy adviser, argued that the organisation’s role is ‘not to solve these issues one by one’
Awards
ITR is delighted to reveal all the shortlisted nominees for the 2026 Asia-Pacific Tax Awards
Monica Erasmus-Koen and her Taxtimbre team will be responsible for building the firm’s TP capability in the competitive Netherlands market
Howden’s Rian Bahia explains how tax insurance can address known risks, unlock transactions and offer an alternative route through disputes and uncertainty
Haynes Boone’s new London partner, Alexandra Ueno-Park, argues that one-size-fits-all policies, billable-hour targets and outdated networking expectations can hold talent back
Death, taxes and Deloitte hoovering up trophies at an ITR awards night. Isn’t that the saying?
AI, pillar two and joint audits could define the next era of tax controversy, says Baker McKenzie tax partner Ariane Calloud
Gregor McMillan of Howden explains how insurance-backed financing can help businesses and funds unlock liquidity from tax receivables and other contingent claims
The arrival of Alex Anderson swiftly follows that of funds tax specialist Stuart Alter and suggests the Tier 3-ranked firm has higher ambitions
One of the two appointments is EY’s Gordon McIntosh, who becomes the big four firm’s second senior tax departure in September
Gift this article