How can I amend my Oklahoma state tax return?
How can I amend my Oklahoma state tax return?
Generally, to claim a refund, your amended return must be filed within three years from the date tax, penalty and interest were paid. For most taxpayers, the three year period begins on the original due date of the Oklahoma tax return. Estimated tax and withholdings are deemed paid on the original due date (excluding extensions).
If your federal return for any year is changed, an amended Oklahoma return shall be filed within one year. If you amend your federal return, it is recommended you obtain confirmation the IRS approved your federal amendment before filing your amended Oklahoma return. Filing an amended Oklahoma return without such IRS confirmation may delay the processing of your return; however, this may be necessary to avoid the expiration of the statute of limitation.
File a separate amended return for each year you are amending. No amended return may encompass more than one single year. Mail each year’s amended return in a separate envelope. Do not provide amendments from different years in the same envelope.
If you discover you have made an error only on your Oklahoma return, we may be able to help you correct the form instead of filing an amended return. For additional information, contact our Taxpayer Assistance Division at (405) 521-3160
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