Sensiba San Filippo LLP has announced its merger with W.H. Mayer Accountancy Corporation, a firm with a 55-year history of providing accounting and tax advice to businesses and individuals in the San Francisco Bay area.

On December 9, Thomson Reuters announced it had acquired Emochila, a leading Web site design company that works specifically with accounting and tax firms. Thomson Reuters and Emochila will now work in collaboration to assist accounting professionals in creating and maintaining their Web sites.

Clifton Gunderson and LarsonAllen, two of the nation’s top 20 certified public accounting and consulting firms, have announced plans to merge and form one of the top 10 accounting firms in the United States.

Moss Adams LLP announced that on September 1, 2011, it combined operations with Kansas City-based Warinner, Gesinger & Associates LLC (WGA), an accounting firm focused on small, local telecom companies.

Carr, Riggs & Ingram, LLC (CRI), one of the top 35 accounting firms in the nation, extended its Southern footprint into an eighth state in September, when it announced its merger with South Central Kentucky accounting firm Holland CPAs, PSC, with offices in Bowling Green and Russellville, Kentucky.

CCH has announced its acquisition of SpeedTax, a provider of Software-as-a-Service (SaaS) sales and use tax solutions. The addition of SpeedTax bolsters the expansive offering of SaaS tax preparation, document management, portal, practice, and workstream found in the CCH ProSystemfx suite of products.

Philadelphia-based ParenteBeard LLC, the largest CPA firm headquartered in Pennsylvania, and McCrory & McDowell, LLC, one of the largest Pittsburgh-based accounting and consulting firms, have announced they will combine practices effective June 1, 2011.

If a key partner decided to retire or became disabled, would your firm have a plan for transitioning clients, choosing a replacement leader, and ensuring continuity of firm vision and strategy?

Big Four firm KPMG has announced the closing of an agreement to acquire the business of advisory firm EquaTerra. According to a company announcement, the acquisition is consistent with the KPMG network’s growth strategy, focusing on organic and inorganic opportunities in select high-demand market sectors.