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 watchdog cites resource limits, duplication in partnership audits
The Treasury Inspector General for Tax Administration assessed a soft-letter initiative and the IRS’s examinations of 82 major U.S. partnerships.
Author: By Martha Waggoner
Posted: March 25, 2026, 6:32 pm
How listening is shaping ‘incredible’ year for AICPA Chair Lexy Kessler
Kessler has shared plenty of perspective with members and students around the globe, and the perspective she has gained from them in return has highlighted her year of service.
Author: By Bryan Strickland
Posted: March 25, 2026, 4:50 pm
Audit report card: More internal audit teams suffered cuts in 2025
The percentage of internal audit leaders reporting staff and budget reductions in 2025 rivaled numbers during the global financial crisis nearly two decades ago. Strategic alignment was linked to sufficient funding for the function, an annual report showed.
Author: By Bryan Strickland
Posted: March 24, 2026, 7:44 pm