Our History

Celebrating 50 years of excellence in 2023

We’ve been serving clients since 1973, and although the world outside has changed, our reputation for providing sound accounting advice and services has remained the same—and that’s why our clients return year after year.

From our first office in Wolfeboro, New Hampshire more than 50 years ago, we have steadily grown into a multi-partner firm with offices throughout the state. Our multiple locations give consistent coverage and access for our clients.

In 2014, the American Institute of Certified Public Accountants (AICPA) identified Leone, McDonnell & Roberts, Professional Association as a G400 firm, one of the 500 largest accounting firms in the United States. This is quite an accomplishment. The G400 is a community, connecting similar sized firms, providing a forum to share best practices and supporting firms in facing day‐to‐day and big picture challenges.

How It All Began

  • 1973


    Firm Began Operations

  • 1975


    Firm Growth (clients and employees) 1975 - 1981

  • 1987


    Firm Incorporated

    November planned/formed. Went into effect January 1, 1988

  • 1988


    Opened Satellite Office

    In North Conway and purchased an accounting practice in Dover, NH

  • 1997


    Firm Ranked

    6th largest accounting firm in NH by Business NH Magazine

  • 2005


    Acquired Accounting Practice

    In Exeter – relocated office to Stratham, NH in 2006

  • 2014


    National Recognition

    Firm recognized by the American Institute of CPAs a G400 firm (one of the 500 largest in the United States)

  • 2020


    Volunteer of the Year

    Partner Paula DePlanche, CPA named the 2020 Greater Dover Chamber of Commerce Volunteer of the Year

  • 2021


    Best of the Seacoast Award

    Winner of “Best Accounting Firm”

  • 2021


    New Offering

    Client Accounting Services

  • 2022


    Best of the Seacoast Award

    Winner of “Best Accounting Firm”

  • 2023


    50th Anniversary

    Celebrating 50 years!


Our people are our greatest asset. They are the foundation and reason for our growth and success.