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2013 Oklahoma Resident Individual Income Tax Forms and
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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2014 Oklahoma Resident Individual Income Tax Forms
Beginning with tax year 2013, the Form 511 will be used to file an amended resident return. The Form 511X will only be used for tax year. 2012 and prior
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Okla. Admin. Code 710:50-3-6 - Amended returns for
(a) If a resident taxpayer is required or elects to file an individual amended Oklahoma income tax return for tax years prior to 2013, OTC Form 511X must be
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