Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player

O’Sullivan & Company, P.C., is a CPA firm located in the heart of the Merrimack Valley in historic North Andover, Massachusetts. We deliver a wide range of tax, accounting and planning services tailored to meet the demands of our clients in the Greater Boston area. Our expertise in federal and multi-state tax issues, paired with advanced business and taxation degrees, makes O’Sullivan & Company an invaluable resource for all of your taxation and accounting needs.

We invite you to explore our site for background information on our firm, as well as useful news articles and external links. At O’Sullivan & Company, we’re more than your CPAs. We’re your partners in success.