MMB + CO Information

MMB+CO is a distinguished regional accounting firm with a over 50 years legacy of delivering high-quality audit, tax, and consulting services to a diverse range of successful organizations. Founded in 1975, we’ve grown to over 200 full-time professionals, including 38 partners, who are united by a shared commitment to integrity, technical excellence, and exceptional client service. What sets MMB+CO apart is our perfect mix of large-firm resources and small-firm attention to detail. We take pride in building strong, lasting relationships with our clients-getting to know their businesses, understanding their goals, and tailoring our approach to help them thrive in a complex financial landscape. From regulatory compliance and tax planning to risk management and financial reporting, our experienced professionals offer practical, forward-thinking solutions that drive growth, ensure stability, and add long-term value. We serve clients across a broad spectrum of industries from our five offices located in Canandaigua, Elmira, Latham, Queensbury, and Rochester, proudly supporting organizations throughout New York State. At MMB+CO, we value your future. That’s why we approach every engagement with dedication, insight, and a commitment to delivering results that matter.