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.

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Tax

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.

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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.

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Individuals

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.

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Tax, accounting, auditing news - Journal of Accountancy

IRS holds hiring events in 6 cities after staff cuts
During the 10th ENGAGE, AICPA Chair Jan Lewis pointed to new hiring as a step toward improving IRS responsiveness.
Author: By Martha Waggoner
Posted: June 10, 2026, 9:21 pm
AICPA recommends improvements to CP53E notice process
A letter to the IRS cites erroneous notices, late guidance, and practitioner confusion. It also calls for clearer rules and system changes.
Author: By Martha Waggoner
Posted: June 10, 2026, 8:11 pm
7 CPAs honored at ENGAGE 2026
The AICPA honored seven CPAs at ENGAGE in Las Vegas, highlighting CPA efforts in a specific accounting specialty area, excellence in volunteer efforts, and significant contributions to the profession.
Author: By Kevin Brewer
Posted: June 10, 2026, 4:16 pm