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 launches online tool to help taxpayers manage tax debt
Taxpayers can explore payment plans, collection delays, or compromise offers through a streamlined, privacy protected tool.
Author: By Martha Waggoner
Posted: April 17, 2026, 6:18 pm
AICPA ENGAGE networking tips: How to make meaningful connections
An ENGAGE speaker shares keys to coming home from the June conference in Las Vegas with more than CPE.
Author: By Bryan Strickland
Posted: April 17, 2026, 1:00 pm
GASB seeks feedback on idea of changing how it communicates GAAP
Based on stakeholder input, requested by the end of August, GASB may consider simplifying the structure it uses to communicate GAAP for state and local governments.
Author: By Bryan Strickland
Posted: April 16, 2026, 8:31 pm