Connecticut

Form
Filing Requirements
Corrections
1099-DIV
1099-INT
1099-OID
5498
File data through IRS Combined Federal/State Filing Program. No additional filings are required if participating in IRS Combined Federal/State Filing Program.
Corrections of directly filed forms are completed in the 1220 format. Only the corrected statements are required.
1099-MISC
1099-NEC
File data through IRS Combined Federal/State Filing Program. Direct filing required of forms that have state withholding.
Corrections of directly filed forms are completed in the 1220 format. Only the corrected statements are required.
1099-R
Direct filing required of forms that are reportable to the IRS.
Corrections of directly filed forms are completed in the 1220 format. Only the corrected statements are required.
Filing due date
January 31
Filing method
Electronic Upload
Electronic filing URL
Filing format
IRS 1220 for 1099 filings
CFS participant
Yes
Supporting documentation
Additional information
Connecticut requires an electronic submission of reconciliation/transmittal Form CT-1096.