Find your future with Tonneson+Co

We are passionate about building the future model of business.
Join our team by applying to an open position

Life at Tonneson + Co

At Tonneson + Co, we look for the best, brightest, most passionate people to power our vision and help move our clients forward. Come bring your authentic self to an environment rooted in collaboration, connection, development, and growth. We’re looking for people who value relationships and are excited about helping our clients thrive. If that’s you, apply for one of our open positions today!

Our client’s confidence in us comes from our team of smart, dedicated professionals. We serve our clients with expert advice, of course, but our commitment doesn’t stop there. We also focus on building relationships with our clients, and with each other, that contribute to a climate of trust, accountability, and community for all.

See Our Open Positions

We're excited to announce the combination of Tonneson and @PlanteMoran! This marks a major milestone in our growth—uniting two firms with shared values, complementary strengths, and a passion for helping clients succeed.
The Tonneson + Co team enjoyed a great day of golf and networking at Sandy Burr Country Club in Wayland for the 24th Annual MassCPAs Women’s Golf Outing. We were also proud to support the event as a tee sponsor this year!

#ThisIsTonneson #MassCPAs
Our team had a fantastic evening at the Boston Estate Planning Council 2025 Annual Gala! The event honored the recipients of the 2025 Excellence Award and the 2025 President’s Award, while also celebrating the transition of leadership within the BEPC. It was a wonderful opportunity to connect with peers, celebrate achievements, and engage with the estate planning community.

#BEPC2025Gala #ThisIsTonneson
We were proud to be a silver sponsor again at this year's @bostonchamber_ 2025 Accelerating Growth Annual Meeting! We were especially honored to witness the induction of the 2025 honorees into the Academy of Distinguished Bostonians.

#GBCCAnnualMeeting #ThisIsTonneson
This Memorial Day, we pause to honor the heroes who gave everything for our freedom.

From all of us at Tonneson + Co, thank you to those who served and to the families who carry their legacy forward.

#MemorialDay #ThisIsTonneson

Lifelong relationships

For us it’s not just about the work we do; it’s about the people we work with. The genuine care and support we have for each other extend beyond the workplace, creating lifelong relationships and unforgettable memories with genuinely kind people. The relationships I’ve formed here are invaluable.

— Ann Jarrett-Johnson | Firm Accountant

Flexibility

The flexibility provided by Tonneson has been a game-changer for me. Whether it’s flexible hours, remote work options, or accommodating personal commitments, the company’s willingness to adapt and support my needs has made it easier to manage both my professional and personal responsibilities.

— Kyle Martin | Audit Manager

Building strong relationships

Working at Tonneson has taught me the incredible power of teamwork and the value of building strong relationships. The constant encouragement and support I receive from my colleagues fuel my motivation and make work a truly enjoyable experience.

— Jacklynn Larson | Tax Associate

Supportive and inclusive culture

At Tonneson, I have experienced a supportive and inclusive culture that values the contributions and well-being of its employees. This creates a sense of belonging and motivates me to give and be my best every day. 

— Jadie Phan | Tax Senior Associate

Join Our Team

Join Our team! Browse our current positions.