Buyers who skip evaluating IT systems of a target company may be making a very expensive mistake, according to accounting and consulting firm Crowe Horwath.

BlumShapiro has merged in accounting, tax and business consulting firm Needel, Welch & Stone, expanding the firm’s presence in Massachusetts.

Two months after penetrating the Pacific Northwest region by acquiring LeMaster Daniels, CPA and business advisory firm LarsonAllen acquired Kennewick, Wash.-based Hansen NvO, effective immediately.

Atlanta accounting firms Windham Brannon and Tarpley & Underwood have agreed to combine, expanding the services and client base for the two firms.

Southwest regional CPA firm Weaver has merged with L.T. Hawthorne & Associates Inc., expanding the firm’s services for the petroleum and renewable fuel industries.

Public accounting firm Morrison, Brown, Argiz & Farra LLC combined Tuesday with ERE LLP to create MBAF-ERE CPAs LLC, a division of MBAF.

Dixon Hughes PLLC and Goodman & Co. LLP said Monday they plan to merge on March 1, creating the largest CPA firm based in the South and the 13th largest in the country.

Vanacore, DeBenedictus, DiGovanni & Weddell, a two-office, 10-partner CPA and business advisory firm, has merged in Lesnick and Paradie, a Tarrytown, N.Y-based practice.

The Florida firms of Gregory, Sharer & Stuart, P.A., and Hevia Beagles & Company, P.A., have combined forces.

CIS Consulting Group has sold its 24-year-old practice to a variety of interests, including a software company it once represented.

Clifton Gunderson has expanded its presence in New Mexico, acquiring Albuquerque-based Meyners + Co., for an undisclosed sum.

Rosen Seymour Shapss Martin & Company LLP, CPAs and Profitability Consultants, has merged Kahn, Hoffman & Hochman, LLP, CPAs, into its practice, effective January 1.

Gilman Ciocia has acquired Hoffman, Levy, Bengio & Co., PL, an accounting firm formerly located in Hollywood, Fla.

Mauldin & Jenkins, a CPA and business advisory firm headquartered in Atlanta has merged in two Southern-based accounting firms: CPA Associates in Bradenton, Fla. and Evers & Fox in Atlanta.

CPA and advisory firm Howard, Wershbale & Co. has merged in the firm of Cummins Krasik & Hohl, effective January 1.

Regional CPA and business advisory firm Wiss & Co. has merged with Flemington, N.J.-based Cust, Dori & Benick, effective immediately.

Jaynes, Reitmeier, Boyd & Therrell, P.C. has merged in the accounting practice of another Texas firm, Dan L. Popejoy & Associates, P.C., effective Jan. 1.

Managerial Design, a management process consulting firm based in Oakville, Ontario, merged with Deloitte on Monday.

Tax and business advisory firm WTP Advisors, headquartered in White Plains, N.Y., has acquired New York-based hedge fund consultancy Sala Associates.

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