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

Pillar two may be raising less than expected, but professor René Matteotti says the regime is still changing multinational tax behaviour
Multinationals importing goods into Brazil may need to align TP files and customs documentation more closely as authorities gain new tools to challenge related-party transactions
The private equity-backed deal hands Grant Thornton immediate and impressive US scale, but World Tax data suggests the firm still has work to do to gain recognition
From Instagram content to £100m transactions, the founder of Thomas & Co International discusses building a modern tax and accounting firm for business founders
Growing GAAR scrutiny is driving taxpayers to look beyond legal form and demonstrate the commercial rationale underpinning tax-efficient structures
Pillar two has been clients’ ‘biggest headache’ but also a driver of growth for MHA, which believes it has the edge over its big four rivals
Public country-by-country reporting is exposing multinational tax data to investors, journalists and competitors, creating fresh risks for businesses
Pillar two compliance is creating unprecedented data demands for multinational tax departments, making closer collaboration with FP&A teams essential for accurate reporting and audit readiness
Among the arrivals is Andrew Howell, who leaves scandal-hit PwC Australia after representing PepsiCo in a high-profile TP dispute
ITR's podcast examines whether the big four have overarching cultural issues and assesses the competitive threat of technology-backed transfer pricing firms
Gift this article