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

Identity theft victims waited 20 months for IRS case resolution
A TIGTA report found that IRS delays in resolving identity theft cases cost the government $124.2 million in refund interest from fiscal years 2023 through 2025. The findings echo warnings from National Taxpayer Advocate Erin Collins, who has called the wait times “unconscionable.”
Author: By Martha Waggoner
Posted: September 25, 2026, 6:42 pm
GASB issues guidance for its reporting model related to subsidies
New questions and answers aim to assist stakeholders with financial reporting requirements related to subsidies in Statement No. 103, Financial Reporting Model Improvements. GASB also seeks feedback on a model for voluntary digital reporting.
Author: By Bryan Strickland
Posted: September 25, 2026, 5:50 pm
IRS finalizes increase in estate tax closing letter fee
The IRS issued final regulations increasing the cost of an estate tax closing letter to $76 from $56, adopting without change proposed regulations issued in June.
Author: By Martha Waggoner
Posted: September 24, 2026, 6:50 pm