Where are Tonneson + Co employees located globally?

Tonneson + Co has employees across 2 continents and 2 countries including Pakistan, United States Of America.

How has Tonneson + Co's team size changed over time?

Tonneson + Co's team has decreased from approximately 59 to 31 employees based on available data.

Tonneson + Co Employee Directory

AccountingMassachusetts, United States11-50 Employees

Tonneson + Co is a Wakefield, Massachusetts-based accounting practice that joined Plante Moran on July 1, 2025. As part of Plante Moran, the combined firm provides accounting, tax, consulting, and wealth management services to its clients. The integration expands capabilities and geographic reach while preserving the existing client-facing team and approach.

The organization serves clients seeking professional accounting and related advisory services within the broader accounting industry. It operates within a larger network that emphasizes a people-first culture and a commitment to client service.

Tonneson + Co Global Highlights

North America
76

United States Of America
76

Asia
1

Pakistan
1

Tonneson + Co's Leadership

D. T.
Managing Partner
Mobile Phone
Email
J. F.
Managing Director
Mobile Phone
Email
L. T.
Managing Director
Mobile Phone
Email
J. L.
Manager
Mobile Phone
Email
W. C.
Senior Audit Associate
Mobile Phone
Email
A. B.
Cpa
Mobile Phone
Email
C. C.
Tax Associate
Mobile Phone
Email
E. H.
Cpa
Mobile Phone
Email

Tonneson + Co Employee Metrics

100%

50%

2026

2025

Accounting
Community & Social Services
Human Resources
Program & Project Management
Administrative
Other
Analytics

Contact profiles from Tonneson + Co

Name

Title

Contact Info

Location

Last Update

D. T.
Managing Partner
Mobile Phone
Email
Jul 05, 2026
J. F.
Managing Director
Mobile Phone
Email
Feb 21, 2024
L. T.
Managing Director
Mobile Phone
Email
Oct 21, 2024
J. L.
Manager
Mobile Phone
Email
Oct 22, 2024
W. C.
Senior Audit Associate
Mobile Phone
Email
Oct 23, 2024
A. B.
Cpa
Mobile Phone
Email
Oct 21, 2024
C. C.
Tax Associate
Mobile Phone
Email
Oct 16, 2024
E. H.
Cpa
Mobile Phone
Email
Oct 22, 2024
J. T.
Tax Associate
Mobile Phone
Email
Feb 10, 2025
J. E.
Cpa
Mobile Phone
Email
Oct 22, 2024

Frequently Asked Questions

What is Tonneson + Co known for?

Tonneson + Co was founded in 1975 operates in the Accounting industry; you can contact the main corporate office by phone at

+1-781-245-****

. Explore Tonneson + Co's company overview page for more information.

What is Tonneson + Co's most common email format?

Tonneson + Co employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more Tonneson + Co email formats with LeadIQ.

How many employees does Tonneson + Co have currently?

Tonneson + Co has approximately 27 employees as of July 2026. These team members are located across 2 continents, including North AmericaAsia.

Who are Tonneson + Co's key employees and leadership?

As of July 2026, Tonneson + Co's key employees include:

Managing Partner: D. T.
Managing Director: J. F.
Managing Director: L. T.
Manager: J. L.
Senior Audit Associate: W. C.

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Tonneson + Co Employee Directory

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