The mailing address for Oklahoma individual income tax returns, including Form 511 and Form 511-NR, is:
- Oklahoma Tax Commission
PO Box 26800
Oklahoma City, OK 73126-0800
When submitting your return, do not staple any documentation to the return. Include only the forms, schedules, and supporting documents required for your filing. If needed, you may use a paper clip or other non-permanent method to keep documents together.
Source:
Disclaimer: Always verify details with the official Federal or State Department of Revenue Forms and Instructions. This information is based on current Oklahoma tax forms and may be subject to change.