Moved from North Dakota to Oklahoma Mid-Year: Which State Tax Returns Do You File?
Answer
You file two part-year returns. North Dakota taxes the income you received while you lived there, Oklahoma taxes the income you received after the move, and each state prorates your deductions and credits to its own slice of the year. The date you changed domicile is the dividing line.
Last verified
A mid-year move splits the tax year in two, and each state taxes its own half. That is a residency question, so the machinery that governs commuters — reciprocity agreements, convenience rules, nonresident withholding — is beside the point here.
What you file
- 1Part-year return · North DakotaForm ND-1 with Schedule ND-1NR
File a North Dakota part-year return covering the months you lived in North Dakota. A part-year resident of North Dakota reports the income received while a North Dakota resident, plus any North Dakota-source income received during the rest of the year, and prorates the deductions and credits to the residency period.
- 2Part-year return · OklahomaForm 511-NR
File a Oklahoma part-year return covering the months you lived in Oklahoma. A part-year resident of Oklahoma reports the income received while a Oklahoma resident, plus any Oklahoma-source income received during the rest of the year, and prorates the deductions and credits to the residency period.
The two states, side by side
| North Dakota | Oklahoma | |
|---|---|---|
| Taxes wages | Yes — graduated | Yes — graduated |
| Reciprocity partners | 2 (Form NDW-R) | None |
| Convenience rule | No | No |
| Nonresident return | Form ND-1 with Schedule ND-1NR | Form 511-NR |
| Part-year return | Form ND-1 with Schedule ND-1NR | Form 511-NR |
| Credit for other-state tax | Schedule ND-1CR | Form 511-TX |
| Nonresident safe harbour | None published | None published |
| Local income tax | No | No |
| Revenue department | North Dakota Office of State Tax Commissioner | Oklahoma Tax Commission |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in Oklahoma and working in North Dakota gives:Two part-year returns.
Same two states, different situation
The withholding answer turns on how you are paid and where the work happens, not only on which two states are involved.
- W-2 commuter: North Dakota → OklahomaBoth states — credit offsets the double tax
- Remote worker: North Dakota → OklahomaHome state only
- 1099 contractor: North Dakota → OklahomaHome state, plus the client state if you work there
Other North Dakota pairs
Questions people actually ask
I moved from North Dakota to Oklahoma mid-year. Do I have to file in both states?
You file two part-year returns. North Dakota taxes the income you received while you lived there, Oklahoma taxes the income you received after the move, and each state prorates your deductions and credits to its own slice of the year. The date you changed domicile is the dividing line.
How do I split my income between North Dakota and Oklahoma?
By when you received it, measured against the date your domicile actually changed. Income received while you were a North Dakota resident belongs on the North Dakota return and income received afterwards on the Oklahoma return, with each state prorating your deductions, exemptions and credits to its own part of the year. Keep evidence of the move date — a lease, a closing statement, a licence issue date.
How current is this?
The North Dakota and Oklahoma rules on this page were last checked against North Dakota Office of State Tax Commissioner and Oklahoma Tax Commission on 2026-08-07. We re-check the full grid every December after state legislative sessions close, and re-check the convenience-of-the-employer states quarterly because that is where the rules move fastest.
Sources
Every fact above comes from the revenue department that publishes the rule. We do not cite secondary summaries, and we do not restate a figure we could not find at source.
- North Dakota Office of State Tax Commissioner — individual income taxaccessed 2026-08-07
- Oklahoma Tax Commission — individual income taxaccessed 2026-08-07