Insights

Strategic Acquisition Tonneson + Co's integration into Plante Moran enhances its capabilities and expands its geographic reach, presenting opportunities to offer advanced accounting, consulting, and wealth management services to a broader client base.

Growing Market Presence Recent expansion plans into Mexico and Central America indicate a focus on international growth, creating potential sales avenues in cross-border financial services and regional compliance advisory.

Recognition & Awards Plante Moran's multiple awards for workplace environment and early talent showcase its strong employer brand, providing avenues to connect with upcoming professionals and organizations prioritizing employee engagement and HR consulting.

Technology Adoption The firm's utilization of diverse tech tools like QuickBooks, IBM InfoSphere, and cloud services highlights a tech-forward approach, suggesting opportunities to introduce innovative financial solutions, automation, and cloud-based compliance tools.

Financial Scale & Potential $25M to $50M in revenue positions Plante Moran and its divisions as attractive prospects for premium accounting, tax, and consulting services targeted at mid-sized firms seeking scalable and reputable partners.

Tonneson + Co Tech Stack

Tonneson + Co uses 8 technology products and services including QuickBooks, AutoCAD, Cloudflare, and more. Explore Tonneson + Co's tech stack below.

  • QuickBooks
    Accounting And Finance
  • AutoCAD
    Cad & Graphics
  • Cloudflare
    Content Management System
  • IBM InfoSphere
    Data Integration
  • PyScript
    Miscellaneous
  • Microsoft Word
    Office Suites
  • .NET
    Programming Languages
  • AddThis
    Widgets

Media & News

Tonneson + Co's Email Address Formats

Tonneson + Co uses at least 2 format(s):
Tonneson + Co Email FormatsExamplePercentage
First.Last@tonneson.comJohn.Doe@tonneson.com
72%
Last@tonneson.comDoe@tonneson.com
20%
FLast@tonneson.comJDoe@tonneson.com
7%
FirstLast@tonneson.comJohnDoe@tonneson.com
1%
First.Last@plantemoran.comJohn.Doe@plantemoran.com
96%
FirstLast@plantemoran.comJohnDoe@plantemoran.com
2%
First.Middle@plantemoran.comJohn.Michael@plantemoran.com
1%
FLast@plantemoran.comJDoe@plantemoran.com
1%

Frequently Asked Questions

Where is Tonneson + Co's headquarters located?

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Tonneson + Co's main headquarters is located at 401 Edgewater Place Suite 300 Wakefield, Massachusetts 01880 United States. The company has employees across 2 continents, including North AmericaAsia.

What is Tonneson + Co's phone number?

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You can contact Tonneson + Co's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Tonneson + Co's official website and social media links?

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Tonneson + Co's official website is plantemoran.com and has social profiles on LinkedIn.

What is Tonneson + Co's SIC code NAICS code?

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Tonneson + Co's SIC code is 8721 - Accounting, Auditing, and Bookkeeping Services NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Tonneson + Co have currently?

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As of April 2026, Tonneson + Co has approximately 27 employees across 2 continents, including North AmericaAsia. Key team members include Chief Executive Officer: R. E. M.Managing Partner: D. T.Director: J. G.. Explore Tonneson + Co's employee directory with LeadIQ.

What industry does Tonneson + Co belong to?

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Tonneson + Co operates in the Accounting industry.

What technology does Tonneson + Co use?

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Tonneson + Co's tech stack includes QuickBooksAutoCADCloudflareIBM InfoSpherePyScriptMicrosoft Word.NETAddThis.

What is Tonneson + Co's email format?

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Tonneson + Co's email format typically follows the pattern of First.Last@tonneson.com. Find more Tonneson + Co email formats with LeadIQ.

When was Tonneson + Co founded?

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Tonneson + Co was founded in 1975.

Tonneson + Co

AccountingMassachusetts, United States11-50 Employees

Tonneson + Co is now part of Plante Moran.

As of July 1, 2025, Tonneson + Co has officially joined Plante Moran, one of the nation’s largest accounting, tax, consulting, and wealth management firms. With shared values, a people-first culture, and a commitment to exceptional client service, this combination expands our capabilities and reach — while continuing to serve clients with the same trusted team.

Section iconCompany Overview

Headquarters
401 Edgewater Place Suite 300 Wakefield, Massachusetts 01880 United States
Phone number
SIC Code
8721 - Accounting, Auditing, and Bookkeeping Services
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1975
Employees
11-50

Section iconFunding & Financials

  • $25M$50M

    Tonneson + Co's revenue is estimated to be in the range of $25M$50M

Section iconFunding & Financials

  • $25M$50M

    Tonneson + Co's revenue is estimated to be in the range of $25M$50M

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