Premier Client Accounting and Advisory Services (CAAS) for Your Business in Boston and Beyond

Enhancing Your Financial Operations

Whether you need an extra hand during peak times or a comprehensive, ongoing accounting solution, we’ve got you covered. Our team seamlessly integrates with your operations, providing reliable, timely, and professional services tailored to your needs.

Our services range from routine tasks like bookkeeping and payroll to financial reporting and analysis, cash flow management, and strategic planning. We also offer robust tax services, ensuring compliance while optimizing tax strategies.

With 40+ years of experience and specific industry knowledge, we’re able to minimize risk and improve internal processes, creating a clear financial picture for your business. Trust us to provide exceptional accounting support and customized services, enabling you to confidently delegate financial responsibilities and focus on running your business

Four employees standing together and smiling in a conference room, one sits on the edge of a table, two stand, and one sits in an office chair.
An accounting professional sits at her desk in front of her computer and types.

We provide a range of client accounting and advisory services including:

  • Accounting software set-up
  • Payroll processing
  • Audit support
  • Sales tax filings
  • Hosted QuickBooks services
  • Internal accounting staff support
  • Preparation of Form 1099s
  • Bank/credit card/investment account reconciliations
  • Cash flow analysis
  • Monthly/quarterly financial statements
  • Accounts receivable & payable functions
  • General ledger review & reorganization
  • Preparation of board package
  • Interim CFO/controller services
Let's work together

Talk to an Expert

Erin Coco

Shareholder
Wakefield, MA

Mary May

Principal
Wakefield, MA

Karen Johnston

Director
Wakefield, MA

Rosanna Selvage

Client Services Manager
Wakefield, MA

Pleasure to work with

We have been doing business with Tonneson for over seven years.  Their team is easy to work with and very punctual at meeting deadlines. They are very knowledgeable and informative. On my behalf, I work closely with Joe Lanzi, Rick Mastrocola, and Marie Doucette. They are a pleasure to work with. Our Controller interacts with several members of the audit and tax teams and is very pleased with the services they provide.
—Charlie Masiello | Director, Crystal Motor Express

Valuable business partner

We’ve been working with the team at Tonneson + Co for over 35 years. Their work is timely and accurate, and they are a pleasure to work with. Their team stays current on tax and estate laws, always putting client concerns first. Tonneson is a valuable business partner, playing a key role in our success.

—Michael Tamasi | President & CEO, Accurounds

Financial experts

We have been a client of Tonneson since 1988. We are a small family Logistics company that requires specific financial needs. We have always relied on Tonneson to provide the financial expertise necessary to secure the financing for working capital and equipment purchases. We have gone through several audits and because of the detailed auditing process that Tonneson provides, our experience has been painless. They have been responsive to all our requests and needs. Our business continues to grow and knowing we have Tonneson as our financial partner makes the journey a little easier.

—Michael O'Brien | CEO, Eagle Air Freight, Inc.

Sound financial advice

We have been a client of Tonneson for four decades. We have always received sound financial advice and excellent accounting services over the years. We consider Tonneson to be one of our highly trusted partners.

—Steven Tamasi | President, Boston Centerless

Valued and strategic partner

I consider Tonneson a valued and strategic partner of Signet.

—Bradford Caron | President, Signet

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