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

Workplace stress reaching a breaking point? How employers can respond
Fifty-two percent of employees in a recent survey self-medicated at work in the previous year, and nearly as many (51%) cried on the job in the previous month. During Mental Health Awareness Month, what can organizations do to ease the pain?
Author: By Bryan Strickland
Posted: May 4, 2026, 7:47 pm
COVID-19 disaster relief case has implications for timely refund claims
National Taxpayer Advocate Erin Collins explained what affected taxpayers need to do in response to the Court of Federal Claims’ holding that a taxpayer’s refund claim filing deadline was automatically extended by Sec. 7508A(d)(1) due to the COVID-19 disaster declaration.
Author: By Maria M. Pirrone, CPA, LL.M., and Mark Aquilio, CPA, J.D., LL.M.
Posted: May 4, 2026, 12:40 pm
IRS offers extension option for taxpayers facing ERC claim deadlines
Taxpayers meeting eligibility rules can now use Form 907 to preserve their right to challenge ERC disallowances while the IRS continues its review.
Author: By Martha Waggoner
Posted: April 28, 2026, 8:17 pm