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

Research reveals that four years removed from the beginning of the pandemic, the majority of the largest companies in America feature a structured hybrid model. The most popular model? Three days per week in the office.
Posted: April 17, 2024, 1:56 pm
In light of the continuing challenges taxpayers are facing with the corporate alternative minimum tax, the IRS granted a waiver of the addition to tax for failure to pay estimated corporate AMT “in the interest of sound tax administration.”
Posted: April 15, 2024, 9:04 pm
Large-company CEOs in a KPMG survey are confident in the U.S. economy despite multiple risks. Also, the CEOs seem to be changing their thinking about a permanent return to in-office work, with more envisioning a hybrid model.
Posted: April 15, 2024, 8:09 pm