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.

2025 Tax Risk and Controversy Survey report

While tax controversy continues to increase in both volume and length of time to settle disputes, businesses and tax authorities are embracing technology, including GenAI, in the hopes of alleviating burdens.

Astronomer in photo telescope dome with red light

Our latest thinking

Why AI is poised to make managing tax risk and controversy easier

The EY 2025 Tax Risk and Controversy survey finds tax functions are investing in AI to improve compliance and manage disputes that do arise. Read more.

Three steps tax teams should take to prepare for quantum computing

How can tax functions prepare for quantum computing that can revolutionize tax modeling, audit resolution and fraud detection. Learn more.

How generative AI might help tax functions tackle challenges

GenAI can automate tasks, summarize information and provide insights, but it needs a person’s input to optimize the technology. Learn more.

How artificial intelligence can augment a people-centered workforce

AI is disrupting approaches to talent strategy, risk and resilience. Learn why it’s crucial to blend operational gains with a people-first mindset.

The Tax Leader Imperative: How do you adapt to the changing tax risk landscape?

The 2021 EY Tax Risk and Controversy Survey finds businesses are bracing for more tax disputes. Learn how to assess and help manage tax risk and disputes.

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