Oklahoma Corporations Form Availability
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Form OK 561-C, Capital Gain Deduction for Corporations
12/19/2025
coming soon
Form OW-8-ESC, Corporate Estimated Tax Coupon (four quarters)
12/19/2025
unsupported
Form OK 506, Investment/New Jobs Credit
12/19/2025
coming soon
Form 511CR, Other Credits Form
12/19/2025
coming soon
Form OW-8-P, Underpayment of Estimated Tax
12/19/2025
coming soon
Form 512, Oklahoma Corporation Income Tax Return
12/19/2025
coming soon
Form 504-C
12/19/2025
unsupported