Spotlighting the Nation's
Top 500 CPA Firms

What Is the IPA 500? The Annual Ranking of the Top 500 CPA Firms by Net Revenue

Every year, INSIDE Public Accounting ranks the top 500 CPA firms in the United States based on net revenue, from the multi-billion-dollar Big 4 through No. 500. The IPA 500 provides a comprehensive view of firm size, growth and market position across the profession.

The rankings are one of the most closely watched annual releases for IPA clients and subscribers. Because firm positions shift each year due to organic growth, mergers and acquisitions, and changing market conditions, the IPA 500 offers a clear snapshot of how the competitive landscape continues to evolve.

Beyond the Numbers: Detailed Analysis

IPA analyzes firms across the IPA 100, 200, 300, 400 and 500 groupings to provide context around the year’s challenges, opportunities and strategic shifts. This analysis highlights how firms adapt to economic conditions, talent pressures, and changing client demands.

The 2026 IPA Practice Management Survey is Now Open

Benchmarking Trends:

Peering into Progress

In addition to rankings, IPA examines key benchmarking indicators, including fastest-growing firms (organic and total growth), regional comparisons, five-year trends, profitability and partner and staff compensation. These insights help firm leaders understand not only where they rank, but what’s driving performance.

Firms can access the IPA 500 as a PDF report, which includes highlights, KPIs, rankings by revenue, fastest-growing firms, and year-over-year trends. The IPA 500 is also available as an Excel spreadsheet for deeper analysis.

The table below lists the 2025 IPA 500 CPA firms, ranked by net revenue, including firm name, location and revenue figures.

2025 IPA 500

FAQs

The IPA 500 is an annual ranking of the top 500 CPA firms in the United States based on net revenue, published by INSIDE Public Accounting.

Firms are ranked by net revenue using self-reported data submitted through the IPA Practice Management Survey. 

The IPA 500 is published annually in August.

No. The rankings include firms of varying sizes, from the largest national firms to mid-sized and regional firms ranked through No. 500. 

Yes. CPA firms can participate by submitting data through the annual IPA Practice Management Survey.