Due Diligence Services

EY-Parthenon provides financial, tax, commercial, operational, human resources, AI, IT, product and technology, sustainability, cyber, and transaction tax due diligence to help you make informed choices with confidence. Our insights uncover hidden value, highlight risks, and support long-term strategies—enabling you to move forward with clarity, strengthen decision-making, and drive sustainable growth.


What EY-Parthenon Due Diligence can do for you

Our Due Diligence Services provide a complete view of the factors that drive value, identify risks, and support confident decision-making. Explore our full range of services—financial, commercial, operational, human resources, artificial intelligence (AI), IT, product and technology, sustainability, cyber, and transaction tax—to see how each area contributes to stronger strategies, better deal structures, and sustainable growth. Click on each service to learn how our integrated, data-driven approach delivers actionable insights and helps you make informed decisions with clarity and confidence.


#1 Global M&A Accountant Advisor — EY-Parthenon, H1 2025

Mergermarket’s latest for top M&A transaction advisor by both deal value and volume globally, and across key markets including Australia, France, Germany, Singapore, UK and USA.

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How can AI give your deal the edge?

At EY-Parthenon, we help PE funds with AI due diligence to enhance their investment strategies. Learn more.


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