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

AICPA updates audit standards related to external confirmations
SAS No. 150, External Confirmations, published Monday following an AICPA Auditing Standards Board vote in May, is designed to address today’s digitally driven environment.
Author: By Bryan Strickland
Posted: July 14, 2026, 7:27 pm
IRS designates certain CRAT arrangements as listed transactions
The final regulations target arrangements that the IRS says improperly use charitable remainder annuity trusts and annuities to eliminate ordinary income and capital gain on the sale of property.
Author: By Martha Waggoner
Posted: July 9, 2026, 8:34 pm
Eligible taxpayers to get automatic IRS penalty relief
Under the new system, eligible taxpayers will no longer have to request penalty relief that the IRS says is routinely granted.
Author: By Martha Waggoner
Posted: July 8, 2026, 8:59 pm