1120 Oklahoma electronic filing information
State contact information
If you have specific questions about what you can e-file or about rejections you received, contact the state for more information.
Oklahoma Tax Commission
Oklahoma City, OK 73194
Email
: businessincometax@tax.ok.govPhone
: 405-521-3126 State electronic filing details
E-filing information | Details |
|---|---|
Grace period | None |
E-filing mandate | Yes. Attach the federal XML created for this State (Default) - Only Federal e-file validation errors have to be cleared. E-file Reject Diagnostics do not have to be cleared. |
Accepts state-only filings | Yes. Attach the federal XML created for this State (Default) - Only Federal e-file validation errors have to be cleared. E-file Reject Diagnostics do not have to be cleared. |
Return types accepted | C Corporation S Corporation Consolidation/Combined Amended Short-year Estimated Payments (with return) |
Return types not accepted | Extension Withholding |
Direct deposit of refunds | Yes, required |
Accepted forms of payment | Electronic funds transfer (EFT) Check by mail |
Signature requirements | ERO retains signed Form EF |
Supports PDF attachments | Yes |
Tax year(s) supported for e-filing | Current tax year and two prior tax years |
Special considerations | N/A |
