Houston CPA and accounting firm Doeren Mayhew has acquired TBK CPA, PLLC (TBK), doubling the firm’s local growth in 2025 and furthering its commitment to the Houston business landscape. The acquisition, effective Nov. 17, 2025, brings nearly 35 employees, with four individuals assuming leadership roles.

“We entered 2025 with a clear focus on growth that aligns with our values and vision for the future of Doeren Mayhew,” said Chris Masters, Houston managing principal at Doeren Mayhew Advisors, LLC. “TBK not only strengthens our footprint in the Houston market but combines our commitment to exceptional client service and a people-first culture. Their reputation for delivering tailored client solutions and fostering a collaborative environment mirrors our own, and I look forward to seeing what we will accomplish together.”

Founded in 2014, TBK is a Houston-based tax accounting firm offering comprehensive tax services to high-net-worth individuals and privately held companies primarily in the health care, real estate, oil and gas, professional services and construction industries. All former TBK partners will join Doeren Mayhew’s leadership group as tax principals, including John Blackmon, Kristi Gibb, Nick Kabani and Colin Taylor. Chuck Fiorello, previously a partner at TBK, will join the firm in a director role.

In a joint statement from TBK’s leadership group, they shared, “We are incredibly proud of the firm we’ve built over the past decade. Reflecting on our growth, our leadership team took a thoughtful look at the best path forward to continue meeting the evolving needs of our clients while creating even greater opportunities for our employees. Doeren Mayhew gives us access to a wealth of resources that we know will help strengthen our client relationships and expand our ability to advise them in every aspect of their business.”