Sales tax and compliance automation service provider Avalara has purchased cloud-based tax exemption certificate management product maker Tax Technology Services(TTS).

Nathan Wechsler & Co. PA has merged with Robert E. Moses CPAs of Lebanon, N.H.

Highlights of accounting firm mergers & acquisitions from the previous month

Marcum LLP has merged the offices of Parent, McLaughlin & Nangle CPAs, Inc. into its New England practice, effective immediately.

Gary R. St. Pierre CPAs, a firm based in Mount Prospect, Ill., has merged with Michael Silver & Co.

Prager & Fenton LLP and Metis Group LLC, have merged. The two firms will now operate under the name Prager Metis International LLC.

Armanino (formerly Armanino McKenna) has merged in Microsoft Dynamics CRM and SharePoint consulting services company Gradient Vision, in a move to strengthen its own Dynamics CRM

Schenck SC has acquired a majority stake of Bonfield & Company SC.

Microsoft Dynamics Master VAR SBS Group has added Pennsylvania-based Dynamics NAV reseller Sentinel Technology Group to its partner network, effectively expanding the SBS Eastern Region.

Rebranding, CPA Education Day, Awards and more…

Sage North America and NetSuite partner SWK Technologies has acquired the Sage business partner accounts of Dallas-based Point Solutions, retaining several personnel and approximately 20 accounts.

Mergers and acquisitions are expected to increase in 2013, according to a new survey, with 76 percent of the more than 300 M&A professionals in the U.S. who were polled anticipating that their company will make at least one acquisition in 2013.

PMB Helin Donovan LLP of Austin, Texas has merged in San Francisco-based BBR LLP.

Guilmartin, DiPiro & Sokolowski LLC of Middletown, Conn., and Hamden, Conn.-based Lipman & Co. PC have merged.

SingerLewak LLP has merged with the San Francisco-based firm, Acquavell, Chiarelli, Shuster, Berkower & Co. LLP.

Burton & Browse has agreed to become a part of Bee, Bergvall & Co.

Deloitte has acquired substantially all of the business of Monitor Group, a global strategy consulting firm that went bankrupt last November.

Preston, Romano & Shea LLP has merged into Fesnak & Associates LLP.

Top 100 Firm Carr, Riggs & Ingram LLC has added the Atlanta-based firm Peterson, Coleman & Marett.

Avalara has acquired UPC code taxability database UPC Matrix Master, which adds in a multi-state, product database that maintains taxability information for more than 10 million products in thousands of tax jurisdictions across the U.S.