Do Not File Form 501 for any 1099 forms electronically filed with the Internal Revenue Service if you participate in the Combined Federal/State Filing Program.
Production payments: the Oklahoma Tax Commission requires the reporting of production payments made to individuals, corporations, partnerships, trusts or estates.
Withholding: all payments with Oklahoma withholding must be reported.
Pass-through entities: Oklahoma requires withholding from distributions made to nonresident members of pass-through entities.
| Question | Answer |
|---|---|
| Form Name | Form 501 |
| Form Length | 2 pages |
| Fillable? | No |
| Fillable fields | 0 |
| Avg. time to fill out | 6 min |
| Edition | 2025 |
| Filing deadline | By February 28 of the succeeding calendar year, except where indicated below on the form |
| Who signs | The person or organization submitting this return |
| Matches the agency's file | Yes, checked October 2, 2026 |
| Other names | Form 501, 501 form, OK Form 501, Oklahoma Form 501, OK 501, Annual Information Return |
| Official source | Form 501 (Rev 2025), Oklahoma Tax Commission |
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