Hallisey & D’Agostino, LLP is a full-service public accounting firm offering a wide array of accounting, tax, and advisory services to individuals and small to mid-size closely-held businesses located throughout Connecticut and the surrounding areas.

Accounting & Assurance

Whether it’s assisting with routine bookkeeping issues or advising on a complex transaction during an audit, we have the skills and resources necessary to help you produce accurate, high-quality and timely financial information.


Tax laws and regulations are in a constant state of flux and we recognize that in addition to experience, staying up-to-date on current developments is critical in creating a comprehensive tax strategy.

Business Advisory

From start-ups to established enterprises, businesses at every phase need sound advice to navigate operational challenges, succession planning, and an ever-changing regulatory landscape.


Achieving your financial goals and ultimately a secure retirement requires discipline and the right mix of personalized wealth accumulation and preservation strategies, including tax minimization and trust & estate planning.

Journal Of Accountancy News

Latest News from Journal Of Accountancy

The IRS clarified the standards that an LLC must satisfy to obtain a determination letter that it is exempt from taxation under Sec. 501(c)(3).
Posted: October 22, 2021, 3:23 pm
Manufacturing leaders can use artificial intelligence to improve efficiency and drive growth. But taking full advantage of the technology requires upskilling the workforce.
Posted: October 22, 2021, 1:52 pm
A severely polarized political climate doesn’t have to stop CPAs from achieving their ambitions. Instead, a little empathy can go a long way, according to AICPA governing Council guest speaker Amy Walter, publisher and editor-in-chief of The Cook Political Report.
Posted: October 20, 2021, 9:02 pm