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

Executive turnover slows, but AI strategy remains unclear
A global survey reveals that executives aren’t changing jobs nearly as often as they did a year ago, but many are seeking better internal support for strategic objectives built around artificial intelligence.
Author: By Bryan Strickland
Posted: April 7, 2026, 4:20 pm
Expansion gives millions of entities access to business tax accounts
The IRS said Monday it is opening the online, self-service accounts to partnerships, Indian tribal governments, tax-exempt organizations, and federal, state, and local governments.
Author: By Martha Waggoner
Posted: April 7, 2026, 2:28 pm
IRS tapped Inflation Reduction Act funds to cover 2025 filing season, watchdog says
TIGTA found the IRS spent $4.8 billion in Inflation Reduction Act funds, which were intended to supplement its annual appropriation, on labor and IT to keep the 2025 tax season on track.
Author: By Martha Waggoner
Posted: April 3, 2026, 8:41 pm