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Oklahoma (OK) State Income Tax Return Forms, Free E-Filing and Government Information
Oklahoma State Tax Filing Information
The eSmart Tax online tax return filing solution makes it easy to efile your Oklahoma state tax return using the correct state tax forms. Prepare your full-year resident Oklahoma state tax return alongside your federal tax return for your convenience.
The regular deadline to file an Oklahoma state income tax return is April 20, but Oklahoma offers a special deadline date for electronically filed returns. If you efile your return, you can file on or before April 20.
Find additional information about Oklahoma state tax forms, Oklahoma state tax filing instructions, and government information.
|eSmart Tax supports the following Oklahoma Tax Forms (Click here to download Oklahoma tax forms)|
|Oklahoma Form 511
Individual Resident Income Tax Return
|Oklahoma Form 511-EF
Oklahoma Individual Income Tax Declaration for Electronic Filing
|Oklahoma Form 511-V
Individual Income Tax Payment Voucher
|State OK Website and Contacts|
|Taxpayer Assistance:||(405) 521-3160 or
(800) 522-8165 (In-State Only)
|Refund Status (Automated Response):||(405) 521 -3160|
|State-only tax return:||Not supported|
|Return with foreign address:||Supported|
|State OK Amount Owe Payment Option|
|You have the following options to pay your tax:
|Supported||Same as federal||N/A|
|State Return Type|
|State OK Overpayment Option|
|You have the following options: