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

Optimism, while tempered, is up among finance leaders
Finance decision-makers are more optimistic about the U.S. economy and their own organizations in the first quarter, according to the AICPA and CIMA Economic Outlook Survey.
Author: By Kevin Brewer
Posted: March 5, 2026, 5:01 am
California board approves regulation for state’s climate reporting laws
Companies with more than $1 billion in revenue are required to post their first annual reports by Aug. 10, while a law affecting companies with at least $500 million in revenue remains paused by a legal challenge.
Author: By Bryan Strickland
Posted: March 4, 2026, 9:27 pm
IRS issues higher 2026 depreciation limits for passenger automobiles
The IRS issued the 2026 depreciation limitations for passenger vehicles, including those for which bonus depreciation is applied.
Author: By Martha Waggoner
Posted: March 4, 2026, 12:49 pm