M&A activity among middle-market companies in the U.S. has risen about 25 percent so far this year over last year, according to a report from KPMG’s Corporate Finance unit.

Mergers and acquisitions activity among corporations appears to gaining momentum this year, according to a midyear report by PricewaterhouseCoopers, which foresees M&A activity accelerating in the second half of 2012.

Skoda Minotti has merged in the Cleveland tax firm Gerald M. Appel, CPA, Inc., expanding the firm’s tax practice.

Accounting firm association IGAF Polaris is now PrimeGlobal, announcing a new name, identity and Web site Tuesday.

Tax services firm Ryan has acquired the TAARP Group LLP, a tax and penalty review firm, for an undisclosed sum.

McLean, Koehler, Sparks & Hammond has affiliated with Hunt Valley-based Callan & Palmer.

Wolters Kluwer Tax & Accounting has signed an agreement to acquire Acclipse Limited, a provider of online accounting software for firms in Australia, New Zealand and the Asia Pacific region.

Ernst & Young’s U.S. Transaction Advisory Services practice has acquired Jeffrey A. Parker & Associates Inc., a Philadelphia-based financial advisory firm that focuses on infrastructure.

Accounting and consulting firm MFR said Tuesday that it is merging R&M Global Advisors into its MFR Solutions consulting team, building the Houston-based firm’s international and Latin American reach.

Ohio regional accounting firm Clark Schaefer Hackett has acquired Columbus-based Fentress & Barnes.

Kmetz, Nuttall, Elwell, Graham, PLLC is merging in the accounting practice of A.J. Brackins, CPA, P.A.

A new Web site called the Accounting Practice Exchange aims to help accountants and tax preparers sell their practices.

Plante Moran and Blackman Kallick, two of Chicago’s biggest accounting firms, will merge effective July 1, 2012. Together, the two firms employ 2,000 staff members in 22 offices in Illinois, Michigan and Ohio, and three offices internationally. Combined revenue for the firms in 2011 was approximately $375 million.

Deloitte has expanded its electronic discovery management and litigation services by acquiring substantially all of the assets of IE Discovery Inc., an Austin, Texas-based provider of legal discovery services to government agencies, particularly the federal government.

Top 100 Firm Gallina LLP announced that it will merge with Seattle-based firm Merrill Carlson PLLC, effective July 1.

IMGCAP(1)][IMGCAP(2)]What comes after saying, "I do," in an accounting firm merger? Lots of work integrating brands and handling other merger details—all adding up to a true labor of love.

Mergers and acquisitions are expected to increase this year among mid-market businesses, according to a new survey.

SS&G has merged in The Parkland Group, a Cleveland-based management consulting firm, to create SS&G Parkland Consulting LLC.

BDO’s member firm in Australia has merged in PKF’s practice on the East Coast of the continent, expanding the firm's presence after it retrenched earlier this year.

Weaver said Friday it has merged with Delong Consulting Services, a consultancy that offers compliance and risk management services to financial institutions, effective June 1.