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

About a quarter of callers to two IRS lines got poor service, TIGTA says
The Treasury Inspector General for Tax Administration estimated that about 1 million callers to two IRS customer service lines did not receive quality service.
Author: By Martha Waggoner
Posted: June 16, 2026, 8:38 pm
Crowe partners with private equity; Baker Tilly on the move
Crowe is the latest top 15 firm to strike a private-equity deal. Also, Baker Tilly announced plans to relocate its headquarters to New York and acquire another top 100 firm.
Author: By Bryan Strickland
Posted: June 16, 2026, 6:47 pm
TIGTA: IRS reassigned staff after layoffs for filing season
More than 11,000 workers left Taxpayer Services, prompting the IRS to assign 1,173 higher-paid employees to lower-grade positions, the report from the Treasury Inspector General for Tax Administration said.
Author: By Martha Waggoner
Posted: June 15, 2026, 6:15 pm