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

PEEC adopts revised definition of ‘attest engagement team’
The change, effective Dec. 15, clarifies for practitioners who is and is not part of an attest engagement team when applying AICPA Code of Professional Conduct independence requirements.
Author: By Kelly D. Mullins
Posted: August 17, 2026, 7:51 pm
4 Medicare rules that surprise clients — and some advisers
Clients may be automatically enrolled in Medicare before they’re ready and may incur penalties that last a lifetime by passing on a supplemental plan they don’t yet need. Also, learn why the best monthly price and the best bargain aren’t always the same thing.
Author: By Bryan Strickland
Posted: August 17, 2026, 6:46 pm
IRS provides guidance on rollovers between retirement plans and IRAs
Use of the sample forms and proposed rollover procedures in the guidance is optional for plan sponsors.
Author: By Martha Waggoner
Posted: August 12, 2026, 5:20 pm