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

Pets influence Americans’ financial decisions, AICPA survey finds
Dogs and cats are more than pets for many Americans, who consider the animals family members. An AICPA survey found that pet owners often budget for their animals, prioritize pet spending, and include pets in estate planning.
Author: By Martha Waggoner
Posted: August 19, 2026, 3:55 pm
SEC proposal aims to clarify securities rules for crypto assets
The framework proposed Tuesday includes two exemptions from the registration requirements of the Securities Act of 1933. The proposed rules will be open for public comment for 60 days.
Author: By Bryan Strickland
Posted: August 19, 2026, 12:08 pm
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