Grassi & Co. is a premier professional service organization specializing in accounting, audit, tax, technology consulting, business advisory, forensic, litigation support and valuation services. We serve non-profit clients throughout the New York Metro Area, including New York City, Long Island, New Jersey, Connecticut, and Pennsylvania. Our not-for-profit specialists have helped a wide range of organizations maximize their assets and expand their efforts, touching more lives and better serving society.
Strengthen your administrative capacity and advance your mission with the Alliance’s Operations Support Services. Delivering proven resources to strengthen the impact of nonprofits, the Alliance offers: