Bringing Global Tax Consulting into the 21st Century

Our Directors

Don and Chris have worked together in public tax practice for over 20 years, advising Australian and overseas businesses and investors, on structuring for inbound and outbound investment, acquisitions and divestments, group restructuring, mergers and de-mergers, greenfield and other capital intensive projects, ongoing tax liability management, tax governance and tax risk management. Clients include MNCs, SMEs, both publicly traded and privately held, financial institutions, institutional/ financial investors (including private equity, superfund and pension plans), private wealth clients and governments.

Don Green

Don Green

BBus, LLB, LLM Fellow Chartered Accountant, Chartered Tax Advisor

Don has 40+ years of specialist tax experience in Big-4 accounting firms, with deep industry knowledge as a tax consulting professional across infrastructure, capital intensive industries, property, asset management and financial services sectors. Don has been lead tax advisor on numerous business, investment and cross-border structuring engagements, assets & project financings, M&A transactions and collective investment projects.

Don led one Big-4 firm’s financial services group for over a decade and co-founded and successfully grew another Big-4 firm’s M&A tax group to the # 1 position in Oceania in 8 years. Don’s business experience has also been enhanced through successful management roles and Board positions as a non-executive director and Chairman.

Chris Gibbs

Chris Gibbs

BCom, LLB, LLM, Chartered Tax Advisor, Solicitor

Chris has been a specialist tax advisor for 30+ years, covering all facets of corporate income tax, with primary focus for the last 15 years around international tax structuring and M&A.

Chris has been an adviser for many significant infrastructure projects and government privatisations and to some of Australia’s largest corporate takeovers, with deal values of up to A$15 billion. Sector coverage includes infrastructure, government, multinational corporate, financial institutions, private equity, retail, entertainment and telecommunications.

Chris was a tax partner in a Big-4 transactions group and a founding partner of a Big-4 M&A tax group, including having Asia Pac regional responsibility for tax quality control and for the firm’s own acquisitions.

Greg Hill

Greg Hill

BCom, MComm, Fellow Chartered Accountant

Greg is a specialist in GST and other indirect taxes. He is an innovator in the use of technology to improve indirect tax systems and has extensive experience across multiple industry sectors.

Greg has over 20 years experience as a Big-4 partner in indirect taxation consulting, including three years spent in Europe advising on European VAT issues.

He has accumulated deep industry knowledge as an indirect tax consulting professional across international business, financial services (including insurance), real estate, government (including PPP’s, privatisations and asset-recycling) and infrastructure sectors.

Apart from advising numerous MNCs and SMEs on the indirect tax aspects of their business transactions, Greg also has extensive experience in the governance and risk management of businesses’ indirect tax affairs as well as tax controversy matters, including tax administration issues and indirect tax audits.

We encourage you to contact Greg to discuss the impact of indirect taxes on your business:

Greg Hill greg.hill@ICGTAXGlobal.com 

Don, Chris and Greg are passionate about applying their wealth of experience to delivering a new and innovative model for the tax consulting sector to benefit both tax professionals and their clients.

The ICGTAX Platform

Tax Professionals

  • Access to a growing flow of tax engagements and project roles
  • Ongoing learning and development from ICGTAX’s technical and professional training
  • Formalized ratings of experience
  • Ability to generate income greater than the individual
  • Administration solved for them


  • Big-firm quality, expertise and experience
    delivered more efficiently
    – at significantly lower cost
  • Full suite of tax services
  • International network
  • No audit conflicts
  • Flexible, agile teams/individuals
  • Teams mobilised within 72 hours

Thought Leaders

  • Access to ICG’s blue chip clients to market their expertise
  • Coaching & training roles
  • Digital/mobile marketing platform
  • Membership base of tax professionals to sell and deliver their IP
  • QA roles on engagements
  • Expert roles on client engagements

Our Practice Mix