Learn about our company's core values.
Tonneson + Co has a strong company culture that emphasizes:
- Work/Life Balance
- Professional Development
- Diversity, Equity and Inclusion
- Social Responsibility
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We have become known for giving trustworthy counsel that genuinely has our clients’ best interests in mind. Tonneson + co offers expertise in assurance, corporate tax, mergers and acquisitions, global accounting services, individual and fiduciary tax, and more.
Our firm is headquartered in Wakefield, Massachusetts. Tonneson + co is an independent member of the Geneva Group International, one of the world’s leading global alliances of independent law, accounting, and consulting firms. In 2020, our firm was named a GGI Member Firm of the Year.
Tonneson + Co was named the number ONE Best Firm For Women in the U.S. by Accounting Today in 2021. Check out the feature article in Accounting Today, with insights from Richard Mastrocola and Amy Phelan.
We are proud to be named to Accounting Today’s 2021 list of Best Accounting Firms to Work For. Our firm was also named a Best Accounting Firm to Work For in 2020, 2019, 2018 and 2016.
Tonneson + Co was named Small Business of the Year 2021 by the Greater Boston Chamber of Commerce in the Innovation and Growth category, which recognizes a business that has developed or utilized technology and practices to innovate and accelerate its growth. Read more about this award in our blog post!
Tonneson + Co was one of three firms worldwide to have been named Member Firms of the Year in 2020 by Geneva Group International (GGI) in recognition of the quality of our services.