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 proposes ethics guidance for alternative practice structures
A public comment period on proposed changes to the AICPA Code of Professional Conduct will soon open after the AICPA’s Professional Ethics Executive Committee voted Tuesday to publish an exposure draft related to alternative practice structures, including those involving private-equity investment.
Author: By Bryan Strickland
Posted: November 3, 2026, 7:59 pm
Center for Audit Quality taps Dave Sullivan as CEO
Sullivan currently serves as chair of the Financial Accounting Standards Advisory Council and served as an audit leader during a long career with Deloitte.
Author: By Bryan Strickland
Posted: October 30, 2026, 5:12 pm
FASB proposes changes to the accounting for equity-method investments
Stakeholders have until Jan. 11 to provide feedback on a proposed Accounting Standard Update aimed at improving operability and reducing complexity and cost.
Author: By Bryan Strickland
Posted: October 30, 2026, 12:10 pm