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Oklahoma

State Annual Filings

Form
Filing Requirements
Corrections
1099-B
1099-DIV
1099-G
1099-INT
1099-K
1099-MISC
1099-OID
1099-PATR
1099-R
5498
File data through the IRS Combined Federal/State Program. No additional filings required if participating in the IRS Combined Federal/State Program.
Corrections of directly filed forms are completed in the EFW2C or 1220 format. Only corrected statements are required.
1099-NEC
Direct filing required of forms that have state withholding and/or box 1 amounts of $750.00 or more.
Corrections of directly filed forms are completed in the EFW2C or 1220 format. Only corrected statements are required.
W-2
Direct filing required of all W-2s that have dollars to report where the taxable state is Oklahoma.
Corrections of directly filed forms are completed in the EFW2C or 1220 format. Only corrected statements are required.
Filing Due Date
Last day of February, Last day of January (Oil and Gas reporting)
Filing Method
Electronic Upload
Electronic Filing URL
Filing Format
IRS 1220 for 1099 filings, SSA EFW2 for W-2 filings
CFS Participant
Yes
Supporting Documentation
Additional Information
  • Example of a W-2 file name: W2_001_2016_999999999.txt (001=File sequence number, 2016=Tax year, 999999999=Your FEIN)
  • Example of a 1099 file name: 1099MISC_001_2018_999999999.txt (1099MISC=Type, 001=File sequence number, 2018=tax year, 999999999=Your FEIN)