Oklahoma Form 511Nr - Form 511 can be efiled, or a paper copy. If you need to change or amend an accepted oklahoma state income tax return for the current. Web result form 511 is the general income tax return for oklahoma residents.
Form 511 can be efiled, or a paper copy. If you need to change or amend an accepted oklahoma state income tax return for the current. Web result form 511 is the general income tax return for oklahoma residents.