This document is a report on Deloitte's 2025 Tax Transformation Trends survey, which was conducted amid significant geopolitical changes and evolving global trade dynamics. The survey highlights the challenges faced by tax and finance leaders, including the need to balance cost and compliance while adapting to new regulatory requirements. It emphasizes the increasing demand for granular data and the importance of data management expertise within tax departments. The report outlines key trends, such as the necessity for AI specialists and the shift towards centralized and standardized processes to reduce costs. It also discusses the integration of tax-related data and the challenges associated with it, particularly in heavily regulated sectors like Life Sciences and Financial Services. The findings are based on a survey of 1,000 tax and finance leaders and interviews with multinational tax heads, providing insights into the current landscape and future directions in tax transformation.