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 to develop system to track missing payments, TIGTA says
The report from the Treasury Inspector General for Tax Administration finds that manual tracking and uneven workloads slow resolution of cases of unidentified payments.
Author: By Martha Waggoner
Posted: May 27, 2026, 7:09 pm
IRS overtime rose 12% in 2025 while workforce dropped, TIGTA says
Taxpayer Services staff handling calls, correspondence, and other tasks logged most of the overtime, the report from the Treasury Inspector General for Tax Administration said.
Author: By Martha Waggoner
Posted: May 26, 2026, 5:40 pm
GASB seeks new board member
The candidate selected for the part-time position will begin a five-year term in 2027.
Author: By Bryan Strickland
Posted: May 22, 2026, 3:28 pm