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

Practitioners must weigh applicable professional standards and exercise due diligence in assessing whether a taxpayer claiming an employee retention credit must amend one or more income tax returns to reduce deductions of wages for which the credit was claimed.
Posted: February 20, 2024, 6:29 pm
Understanding the differences between these two types of retirement plans can help sole proprietors make the best choice for their bigger-picture tax and retirement savings goals.
Posted: February 20, 2024, 12:00 pm
Andrea Gacki, director of the Financial Crimes Enforcement Network, reassured a House committee that the agency can act only against willful violations of the new beneficial ownership information reporting rule.
Posted: February 16, 2024, 8:00 pm