Duff & Phelps
Business Consulting and ServicesNew York, United States501-1000 Employees
Duff & Phelps is a mid-sized professional services firm based in New York that provides advisory services across valuation, real estate, taxation and transfer pricing, disputes, and M&A-related corporate transactions. With almost a century of history, the firm assists clients in navigating complex financial and strategic decisions. Operating within the business consulting and services industry, it positions itself as a specialist adviser for corporate actions and related disputes. In 2026, updates show an expansion of the firm's European advisory footprint, including new offices and leadership in Italy and Southern Europe. Its client base includes organizations pursuing buy-side and sell-side transactions as well as those seeking independent valuation and tax guidance. The firm remains headquartered in New York and operates within the broader landscape of global professional services providers.