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 tapped Inflation Reduction Act funds to cover 2025 filing season, watchdog says
TIGTA found the IRS spent $4.8 billion in Inflation Reduction Act funds, which were intended to supplement its annual appropriation, on labor and IT to keep the 2025 tax season on track.
Author: By Martha Waggoner
Posted: April 3, 2026, 8:41 pm
Americans’ financial optimism edges higher, but worries remain
As National Financial Literacy Month begins, an AICPA-commissioned survey highlights why many consumers need to refocus their financial decision-making.
Author: By Bryan Strickland
Posted: April 2, 2026, 6:42 pm
SEC accepting Professional Accounting Fellow applications
The SEC’s Office of the Chief Accountant is accepting applications for positions that will begin this summer. The application deadline is April 22.
Author: From staff reports
Posted: April 1, 2026, 7:24 pm