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

PCAOB seeks comment on proposed quality control amendments
The PCAOB issued for public comment a supplemental release regarding narrow, targeted proposed amendments to QC 1000, A Firm’s System of Quality Control, and related amendments to forms and the QC reporting rule.
Author: By Kevin Brewer
Posted: June 15, 2026, 12:57 pm
PEEC seeks input on proposed revisions to ‘public interest entity’ definition
Public comments are due by Sept. 15 on the proposed definition, which aims to ensure that the AICPA Code of Professional Conduct keeps pace with future regulatory updates without the need for additional standard-setting actions.
Author: By Kelly D. Mullins
Posted: June 15, 2026, 12:17 pm
IRS holds hiring events in 6 cities after staff cuts
During the 10th ENGAGE, AICPA Chair Jan Lewis pointed to new hiring as a step toward improving IRS responsiveness.
Author: By Martha Waggoner
Posted: June 10, 2026, 9:21 pm