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Okla. Admin. Code 710:50-17-7 - Amended income tax returns for
In order to assist in the processing of a corporations amended income tax return, corporations must use OTC Form 512X for tax years prior to 2013.
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2024 Form 512 Oklahoma Corporation Income Tax Return
Corporations that are not required to complete Federal Form 1120 Schedules L, M-1 and M-2 are still required to complete the Oklahoma Form. 512, Pages 7 and 8 -
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2014 Oklahoma Resident Individual Income Tax Forms
This packet contains: Instructions for completing the. Form 511: Oklahoma resident income tax return. Form 511 income tax form. Form 538-S: Sales Tax
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