An amended return should be filed for each reporting period in which errors occurred or amounts require updating. Taxpayers who used the OkTAP online filing system may amend their reports online. Taxpayers who filed a paper report should file the amended report in the same manner. Please indicate on the top of the report “AMENDED”.
For corporations who filed a Form 512:
- If you are filing an amended 512 for tax year 2013 and thereafter, place an X in the box at the top of the Form 512 as this indicates the return is being amended.
- If you are filing an amended 512 for tax year 2012 and prior, use Form 512X.
For S corporations who filed a Form 512S:
- If you are filing an amended 512S for tax year 2008 and thereafter, place an X in the box at the top of the Form 512S as this indicates the return is being amended.
- If you are filing an amended 512S for tax year 2007 and prior, use Form 512S and place an "X" on the line next to the form number (512S X), as this indicates the return is an amended one.
For partnerships who filed a Form 514:
- If you are filing an amended 514 for tax year 2008 and thereafter, place an X in the box at the top of the Form 514 as this indicates the return is being amended.
- If you are filing an amended 514 for tax year 2007 and prior, use Form 514 and place an "X" on the line next to the form number (514X), as this indicates the return is an amended one.
For estates who filed a Form 513:
- If you are filing an amended 513 for tax year 2008 and thereafter, place an X in the box at the top of the Form 513 as this indicates the return is being amended.
- If you are filing an amended 513 for tax year 2007 and prior, use Form 513 and place an "X" in the "Amended Return" box located at the top of the form.
For trusts who filed a Form 513NR:
- If you are filing an amended 513NR for tax year 2008 and thereafter, place an X in the box at the top of the Form 513NR as this indicates the return is being amended.
- If you are filing an amended 513NR for tax year 2007 and prior, use Form 513NR and place an "X" in the "Amended Return" box located at the top of the form.
For organizations exempt from income tax who filed a Form 512E:
- If you are filing an amended 512E for tax year 2013 and thereafter, place an X in the box at the top of the Form 512E as this indicates the return is being amended.
- If you are filing an amended 512E for tax year 2012 and prior, use Form 512E and write “Amended” in the top left corner of the form.