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

With Senate amendments approved by the House on Friday, the budget reconciliation bill now known as the Inflation Reduction Act will go to the president for his signature.
Posted: August 12, 2022, 10:10 pm
A downloadable booklet describes the Gramm-Leach-Bliley Act’s safeguards rule and includes a template for a firm’s required written information security plan.
Posted: August 10, 2022, 6:47 pm
President Joe Biden signed bills that give the government more time to catch and prosecute fraud related to two of the most popular COVID-19 small business relief programs.
Posted: August 10, 2022, 11:40 am