According to the Oklahoma instructions:
A Resident is an individual that is domiciled in the state for the entire year.
A Nonresident is an individual that was not domiciled in the state at any time during the tax year.
A Part-Year Resident is an individual whose domicile was in Oklahoma for less than 12 months during the tax year.
Can I file a different filing status than my federal return?
The filing status for Oklahoma returns must be the same as on the federal tax return, with one exception. This exception applies to married taxpayers who file a joint federal return where one spouse is a full-year Oklahoma resident (either civilian or military), and the other is a full-year nonresident civilian (nonmilitary).
What if I am a resident and my spouse is not?
If one spouse is a resident and the other is not, you may file a married filing separate return. If you elect to file married filing jointly then all income is taxed as if both spouses are residents.
You can complete your MFS State return in your account. To do so follow these steps:
- First complete your MFJ Federal tax return
- State Section
- Edit State
- Basic Information
- Change Filing Status from MFJ to MFS for State purposes only
- Select “yes” and then proceed to MFS for State purposes only
- Choose either the Taxpayer or Spouse for whom you are filing the MFS return
- Complete the MFS income allocation on this screen
This MFS return cannot be filed electronically. Print the return by going to
- View/Print return.
- Sign and mail to the State along with your supporting documents.
Once you print the MFS return, you can follow steps 2-8 to complete an MFS return for the other Spouse (if needed). In order to change the residency status between resident and nonresident, please delete the State return and then add it back.
For more information: