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 announces terms of new conservation easement settlement opportunity
The terms of the new, time-limited settlement opportunity include the type and amount of deduction that eligible taxpayers will be allowed and the penalty rate that will apply.
Author: By James A. Beavers, CPA, CGMA, J.D., LL.M.
Posted: May 13, 2026, 9:03 pm
AI for CPAs: From efficiency tool to decision engine
Most global finance leaders in a new survey report that artificial intelligence is improving decision-making and forecast accuracy in the finance function, and organizations using agentic AI and those making sure AI is assurance-ready are seeing bigger gains.
Author: By Bryan Strickland
Posted: May 13, 2026, 8:10 pm
Another settlement offer planned in IRS conservation easement cases
With hundreds of cases in the courts, the IRS is preparing at least its fourth settlement offer in syndicated conservation easement cases in recent years.
Author: By Martha Waggoner
Posted: May 12, 2026, 11:47 am