Oklahoma State Supported Forms
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- OK 511 Resident Income Tax Return
- OK 511NR State of Oklahoma Income Tax Return
- OK 573 Farm Income Averaging
- OK 538S Claim for Credit and Refund of Sales Tax
- OK 538H Oklahoma Claim for Credit or Refund of Property tax
- OK 511CR Other Credits
- OK 511TX Credit for Tax Paid to Another State
- OK OW-8-ES Oklahoma Individual Estimated Tax
- OK OW-8-P Underpayment of Estimated Tax Worksheet
- OK OW-8-P-SUP-I Annualized Income Installment Method for Individuals
- OK 561/561NR Oklahoma Capital Gain Deduction
- OK 504-I Application for Extension of Time to File an Oklahoma Income Tax Return for Individuals
- OK 576 Natural Disaster Tax Credit
- OK 567A Credit for Investment in Clean-Burning Motor Vehicle Fuel Property
- OK 577 Refundable Coal Credit
- OK 578 Refundable Credit for Electricity Generated by Zero-Emission Facilities
- OK 500A Information Return
- OK 500B Information Return Report of Nonresident Member Income Tax Withheld
- OK 506 Investment / New Jobs Credit
- OK 564 Credit for Employees in the Aerospace Sector
- OK 565 Credits for Employers in the Aerospace Sector
- OK 584 Credit for Employees in the Vehicle Manufacturing Industry
- OK 585 Credits for Employers in the Vehicle Manufacturing Industry
- OK 511V Individual Income Tax Payment Voucher