Tax controversy

Tax has become increasingly connected — governments are collecting and sharing taxpayer information, and tax changes in one jurisdiction can now trigger changes across the globe. The result is that tax controversy is evolving from two-sided disagreement in specific countries into a multidimensional, multi-country dynamic.

What EY can do for you

Businesses must act so that their people, policies and systems are keeping pace. They need a line of sight into the issues and the potential for future tax controversy as well as a centralized global strategy. Should disagreements arise, having resources that can act as a “bridge” between the tax authorities and the company is essential.

Take a look at our insights, including leading practices on implementing a globally integrated approach to tax controversy management.

The 2025 EY Global Tax Policy and Controversy Outlook

How increased global competition is reshaping tax priorities

Global Tax Policy and Controversy Outlook

Our latest thinking

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