About ACM Accountants
Anton Collins Mitchell LLP ("ACM") was organized in 2002 by three former partners of BDO USA, LLP. Greg Anton, Jim Collins (retired December 2007), and Gary Mitchell shared a common vision to provide their clients with exceptional local expertise and their employees with new opportunities, while retaining access to the worldwide resources of the BDO Alliance USA.

In 2010 ACM merged in the existing practice of Watkins & Schommer, Inc. The result is a new location capable of more fully serving Greeley and Northern Colorado.

In 2012, ACM increased its Colorado footprint again by combining the firm formerly known as Doty, Lyle and Jones, LLC with the ACM practice. ACM has been providing services to Boulder clients for the past decade. The ACM Boulder office represented a strategic step forward in our ability to provide service more quickly and effectively to those clients.

January 1, 2016 marked the expansion of ACM's regional footprint through the combining of Mader Tschacher Peterson & CO with ACM.
Since 2002 ACM has been named a "Best Accounting Firm to Work For", "Best Company to Work For", "Best Place to Work" and one of Colorado's "Fastest Growing Private Companies". We have grown from 1 office, 3 partners and 24 employees to 4 offices, 31 partners and directors, and 140 employees.
ACM is committed to providing the most trusted, relationship based accounting, consulting and tax services available.
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