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

AI changes how accountants work, not what they do
Three years after tax professionals attended the AICPA National Tax Conference’s first session on generative AI, a speaker from the 2023 conference and a speaker at this year's conference say the technology is changing how accountants work, not replacing them. They also say AI’s growing role in practice requires safeguards, oversight, and experienced professionals.
Author: By Martha Waggoner
Posted: October 29, 2026, 8:28 pm
AICPA proposes improvements to SOC 2 trust services criteria
Feedback is being accepted through mid-January on proposed updates to the framework used by CPAs to evaluate controls over an organization’s information systems.
Author: By Bryan Strickland
Posted: October 28, 2026, 6:58 pm
“Ghost preparers” tied to $179 million in potentially fraudulent refunds
A TIGTA report linked ghost preparers to $179 million in refund claims over two years. Its findings come as legislators consider the Taxpayer Assistance and Service Act, which would expand IRS oversight of paid tax return preparers.
Author: By Martha Waggoner
Posted: October 23, 2026, 8:10 pm