1065 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
PO Box 269060
Oklahoma City, OK 73126-9060
Phone
: 405.521.3637

State electronic filing details

Grace period
None
E-filing mandate
Yes
Accepts state-only filings
Yes
Return types accepted
Partnership
Amended
Short-year
Composite (part of main return)
Return types not accepted
Extension
Estimate Payments
Withholding
Direct deposit of refunds
Yes
Accepted forms of payment
Direct debit (EFW)
Electronic funds transfer (EFT)
Credit card (Online Services section of website)
Check by mail
Signature requirements
ERO retains signed Form EF for 3 years
Supports PDF attachments
Yes
Tax year(s) supported for e-filing
Current tax year and two prior tax years
Special considerations
Cannot e-file more than one original return for same tax year for the same FEIN, regardless of the fiscal year dates

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