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.

Read more →

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.

Read more →

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.

Read more →

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.

Read more →

Tax, accounting, auditing news - Journal of Accountancy

Anticipated applicability date for future final RMD regs. announced
The IRS said it anticipates that the future final regulations on RMDs under Sec. 401(a)(9) will apply for the distribution calendar year that begins no earlier than six months after those regulations’ appearance in the Federal Register.
Author: By Martha Waggoner
Posted: February 23, 2026, 9:22 pm
AI loses ground to pros as taxpayers rethink who should do their taxes
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
AICPA seeks guidance on Sec. 174A(c) capitalization and amortization of R&E
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