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We take the guess work out of accounting and taxes!


Established in 1989, Collard & Sowizral, PC is a full service accounting firm located in historical Concord, MA.  We provide a wide variety of accounting, tax and financial management services tailored to meet the needs of our business and individual clients.  We keep abreast of tax law changes throughout the year to ensure that you are taking advantage of ALL tax incentives.

We serve clients not only in Concord and the greater Boston metro-west region but also worldwide including Germany,Switzerland and the U.K.

To better meet the needs of our accounting and tax clients, we provide individualized services for small business in industries like restaurants, high-tech, construction, professional services, medical practices and non-profits.  These individualized services have enabled us to address your industry specific challenges, compliance needs and industry standard tax practices.


Explore our web site to discover the many ways we can serve you.  Come back often for tax and business news and planning suggestions.  Bookmark this page as a favorite page!

We welcome any questions or comments you may have. Feel free to contact us at any time:

  • Telephone...
  • (978) 371-7448
  • Fax...
  • (978) 371-0038
  • Collard & Sowizral, PC.
  • P.O. Box 1530
  • Concord, MA 01742

You can also send us a message directly through the contact page of this website.

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