ADP has acquired MasterTax LLC and MasterTax Services, expanding the payroll giant’s array of payroll tax and compliance services.

SS&G completed a merger Wednesday with Ahlbeck & Co., expanding the Cleveland-based accounting and consulting firm’s presence to Chicago.

Meyers Norris Penny, one of Canada’s largest accounting and business advisory firms, said it would merge with Montreal-based firm WSBG, effective Jan. 1, 2011.

Two Sacramento-area accounting firms, Gallina LLP and Burnett + Company LLP, have agreed to combine, effective Oct. 1.

McGladrey & Pullen and a firm it acquired four years ago have agreed to pay the Commodity Futures Trading Commission a total of $1.7 million for their audits of the bankrupt Sentinel Management Group.

CPA and advisory firm Anton Collins Mitchell has merged with Greeley, Colo.-based Watkins & Schommer, giving ACM a presence in Northern Colorado.

Global CPA and business advisory firm Grant Thornton has acquired the Disputes and Investigations Practice of Huron Consulting.

Marcum LLP has combined with Stonefield Josephson, expanding the firm’s footprint to California and Hong Kong.

Indianapolis accounting firms Murphy, McClary, Stover and Burnett LLC and Horn CPA Group PC have merged to form Meridian CPAs.

CPA and business advisory firm Abrams Little-Gill Loberfeld has acquired the tax practice of Walpole, Mass.-based Lawrence K. Landy, CPA.

Sage reseller Blytheco made another move to further grow its SalesLogix and overall customer relationship management business with the purchase of the SalesLogix practice of Result Data Consulting Ltd.

IMGCAP(1)]Cold calling is much like my golf game: unpredictable with unmet expectations.

Florida accounting firms Saltmarsh, Cleaveland & Gund and Stogniew & Associates are combining, effective Oct. 1.

Michigan accounting firms Lewis & Knopf CPAs PC, and Thomas R. Haggerty CPA PC have combined forces.

ATLANTA

Thomson Reuters has acquired TaxSimple, one of the last independent software companies in the tax software market.

Sage reseller Blytheco LLC has acquired SFA Technology, a Denver-based SalesLogix reseller and customer relationship management consultant.

Louisiana accounting firm LaPorte Sehrt Romig Hand CPAs plans to expand its presence to Texas by merging in Houston CPA firm Hidalgo Banfill Zlotnik & Kermali PC.

ARIZONA

CPA and business advisory firms Abdo, Eick & Meyers,LLP and Jelinek Metz McDonald Ltd. have announced that they will merge,effective November 1.