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

IRS urged by national taxpayer advocate to pause Kwong claims denials
National Taxpayer Advocate Erin Collins urged the IRS to halt denials of claims tied to ongoing Kwong litigation, arguing that taxpayers could lose rights or pursue unnecessary litigation while courts continue to consider the case. The IRS has received more than 275,000 refund and abatement claims related to Kwong, she said.
Author: By Martha Waggoner
Posted: October 15, 2026, 5:19 pm
IRS proposes regulations implementing premium tax credit changes
The IRS and Treasury proposed regulations implementing Sec. 36B premium tax credit changes enacted in H.R. 1, including new eligibility and verification requirements, reporting changes, and rules governing repayment of excess advance premium tax credits.
Author: By Martha Waggoner
Posted: October 15, 2026, 4:55 pm
IRS grants Hurricane Isaias tax relief in Alabama, Florida
Taxpayers in parts of Alabama and Florida that sustained damage from Hurricane Isaias have until February to file various federal tax returns and make tax payments under disaster relief announced Wednesday by the IRS. The IRS said it will automatically identify taxpayers in the covered disaster areas and apply the relief.
Author: By Martha Waggoner
Posted: October 15, 2026, 12:54 am