Outlook 2026: Agentic AI Reaches the Tipping Point in Tax and Accounting Firms

AI-powered firms are closing books faster, reallocating staff time to higher-value work, and widening the competitive gap with slower adopters.

By CPA Trendlines Research
Cornerstone Report

As artificial intelligence transitions from a buzzword to a business imperative, CPA firms across the U.S. are quietly beginning to deploy generative AI assistants, machine learning tools, and “agentic” AI platforms to automate audits, prepare taxes, and provide financial insights.

With the astonishing surge in AI adoption, firm leaders say we’ve reached a tipping point where those not investing in AI risk being left behind.

MORE CPA Trendlines Cornerstone Reports

In this Cornerstone Report, accounting firms show how they are leveraging AI to transform their operations, the benefits and challenges they are encountering, and what it all means for the future of the profession, including:

  • Why AI adoption in CPA firms has hit a tipping point
  • How agentic AI is transforming tax, audit, and advisory work
  • The real productivity, ROI, and revenue gains firms are reporting
  • What AI means for staffing, skills, and firm economics
  • The risks, governance challenges, and regulatory implications ahead
  • How firm leaders can deploy AI without falling behind