Useful Internal Revenue Services Phone Numbers

IRS Directory for Practitioners – Connecticut (pdf document)

Download the New England Directories for Professionals (Zip file containing Microsoft Excel documents)

Toll-Free IRS Practitioner's Hotline: 866-860-4259
(Monday - Friday 7:30 a.m. to 5:30 p.m.)

Toll-Free Number for Cincinnati Service Center: 866-699-4083
(For taxpayer inquiries on status of Form 706 filings, including claims and amended returns, extensions, etc.)