San Francisco, California-based accounting and advisory firm SD Mayer & Associates has deepened its regional foothold through a merger with Ronald Ruttenberg & Co., CPAs (RRC).

Financial details about the transaction remain undisclosed.

Ronald Ruttenberg & Co. specialises in tax, bookkeeping, consulting, and property management services.

The company, headquartered in Burlingame, California, was established in 2004.  

With this merger, Ronald Ruttenberg will assume a leadership position at SD Mayer & Associates. He brings more than 40 years of experience in the accounting space to the new role.

SD Mayer offers a broad spectrum of services, including tax planning, audit and assurance, wealth management, as well as business advisory.

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It has offices in San Mateo, San Francisco, San Leandro, and Menlo Park.

SD Mayer & Associates managing partner Steve Mayer said: “Ron and his team have built an incredible firm rooted in trust, expertise, and a true dedication to clients. We are thrilled to welcome them into the SD Mayer family.

“Together, we will continue to deliver the highest level of service while expanding our footprint and strengthening our capabilities. By integrating Ronald Ruttenberg & Co., CPAs into SD Mayer, we are building on our shared commitment to helping clients achieve their financial goals.

“This merger is not just about combining expertise but about creating new opportunities for our clients, employees, and communities.”

Both firms are focused on ensuring a smooth transition and promise to maintain the customised service delivered to clients.

RRC founder Ronald Ruttenberg said: “This merger is an exciting chapter for both firms. I have always believed in providing clients with personalised, high-quality service, and SD Mayer shares this ethos.

“By joining forces, we are not only expanding our resources and capabilities but also ensuring that our clients continue to receive the exceptional service they deserve, while remaining local in San Mateo.”