OK 511 Information

An Oklahoma resident individual is taxed on all income reported on the federal return, except income from real and tangible personal property located in another state, income from business activities in another state, or the gains/losses from the sales or exchange of real property in another state.

Link to official form info:

Link to official form info for 511

Tax Reminder works year round to keep official tax form info up-to-date for Oklahoma and the rest of the USA. The IRS and states change their forms often, so we do the hard work for you of figuring out where the official form info is located.

To access the official link to form OK 511 and get reminded when it's due, sign up for a free Tax Reminder account:

  • Upcoming Due Dates in the Next Year:*
  • Tuesday Apr 15, 2025
  • Create a free account to see exactly when to file this form, receive email or SMS notification reminders, and to keep a record of filing it in your history.
    * Due dates are based on the filing requirements for this form and may vary depending on your tax year.

Never forget to file OK 511 again.
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