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Help Center - Oklahoma.gov
Beginning with tax year 2013, the Form 511 is used to file an amended resident return. The Form 511X is for tax year 2012 and prior. Part-year and nonresidents
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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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Okla. Admin. Code 710:50-3-6 - Amended returns for
For tax years 2013 and subsequent, if a resident taxpayer is required or elects to amend an individual Oklahoma income tax return, OTC Form 511 must be used
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