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.

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.

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.

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.

Tax, accounting, auditing news - Journal of Accountancy

Taxpayers are shifting back toward human tax professionals, with trust in AI for filing slipping across every generation, survey shows.
Author: By Martha Waggoner
Posted: February 23, 2026, 12:49 pm
Requested guidance can be provided through modifications to Rev. Proc. 2025-28 and/or other published guidance.
Author: By Martha Waggoner
Posted: February 20, 2026, 9:19 pm
More than 30% of corporate employees in a new survey said AI has increased their workload, nearly double the percentage of employees reporting a workload decrease.
Author: By Bryan Strickland
Posted: February 20, 2026, 6:50 pm