CBIZ acquires Marcum

CBIZ agreed to acquire Marcum. Reported deal value: $2.8B. Status: Completed. Sector: Professional Services. Target headquarters context: New York City, New York, United States.

This page summarizes publicly available information about the transaction as of 2026-01-18. Figures and status may change as filings and press coverage update.

The Marcum acquisition has significantly expanded CBIZ client base, increased scale, and strengthened capabilities in core tax, accounting, and advisory services , enabling the firm to leverage cross-selling, deepen client relationships, and improve its competitive position in target middle-market segments