The 2025 IPA 500 list is here. 

In this fast-paced episode of the INSIDE Public Accounting podcast, Rob Brown and Chelsea Summers go full horse race. No big-picture trends this time — it's all about who’s new, who’s rising fast, and who’s out. 

Highlights include: 

• The debutants: Firms like Sorren (#61) and H&Co (#66) enter with bold moves or private equity support. 
• Major exits: CBIZ’s acquisition of Marcum and Baker Tilly’s acquisition of Moss Adams reshuffle the top 10. 
• The fastest growers: Smith + Howard tops the list with 26.2% organic growth — but they’re not alone. 
• Firms on the move: Mid-tier firms like ATKG and Opsal Dawson are making major leaps up the rankings. 
• What this all means: PE-backed organic growth, rising geographic diversity and a new playbook for success. 

Plus: Benchmarking tips, strategy insights and a candid look at how smaller firms can position themselves to break in next year.