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

🌟 Tax Takeover with Intern Jacob Pineau! Curious about what it's like interning at Tonneson + Co? Check out what a day-in-the-life looks like for Jacob!

Visit our website to learn more about our internship programs 👉 link in bio!

#ThisisTonneson #TaxIntern
Wishing everyone a very "hoppy" Easter today! 🐰 May your day be filled with love, joy, and lots of chocolate! 🍫

#ThisisTonneson #HappyEaster
🔍 We are #Hiring! Explore opportunities at Tonneson - we have many open positions across our teams in both Audit and Tax!

Check out our website in our bio and build your career path today!

Can't find the ideal role for you? Reach out to us at to kickstart the conversation about what your future at Tonneson could look like. We'd love to hear from you!

#ThisisTonneson #Accounting #Tax #Audit #JobOpportunities
🍀 Cheers to a sham-rockin' St. Patrick's Day! May your day be filled with luck and laughter! 💚

Tonneson + Co was named to the list of Largest Accounting Firms in Massachusetts by the @bostonbusinessjournal! We are ranked as the 22nd largest firm in the state. This data is based on the number of employees, CPAs, and partners in Massachusetts. We are proud to be named to this list and celebrate our people who make recognition like this possible!

Attention college students! 🚨 Gain real-world marketing experience this summer as a Marketing Intern at Tonneson + Co. 🌟 Join our dynamic team to learn skills in social media marketing, content creation, business development, and more!

If that hasn't sold you yet, maybe #SummerFridays will. 😏

Apply now to kickstart your marketing career! Link in bio for application details. 

#ThisisTonneson #MarketingIntern

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


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.

— Alex Bockus | 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. 

— Vera Su | Tax Manager

Celebrate together

Being part of Tonneson means having the opportunity to celebrate life’s milestones and achievements together. From birthdays and anniversaries to personal accomplishments, the company fosters a culture of support and celebration that makes every moment feel special. From team-building activities to social events, the company fosters a sense of community that enhances both our professional and personal lives.

— Kyle Templeton | Audit Associate

Join Our Team

Join Our team! Browse our current positions.