Moved from Mississippi to Oregon Mid-Year: Which State Tax Returns Do You File?
Answer
Both states want a return, but neither taxes the whole year. Moving from Mississippi to Oregon splits the tax year at the date your residency changed: a Mississippi part-year return covers everything before it, a Oregon part-year return everything after. Income is assigned by when it was received.
Last verified
Part-year returns are designed so that neither state taxes the whole year. The risk is not double taxation by default; it is misassigning income received near the move date, and losing the proration on deductions and credits.
What you file
- 1Part-year return · MississippiForm 80-205
File a Mississippi part-year return covering the months you lived in Mississippi. A part-year resident of Mississippi reports the income received while a Mississippi resident, plus any Mississippi-source income received during the rest of the year, and prorates the deductions and credits to the residency period.
- 2Part-year return · OregonForm OR-40-P
File a Oregon part-year return covering the months you lived in Oregon. A part-year resident of Oregon reports the income received while a Oregon resident, plus any Oregon-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
| Mississippi | Oregon | |
|---|---|---|
| Taxes wages | Yes — flat | Yes — graduated |
| Reciprocity partners | None | None |
| Convenience rule | No | No |
| Nonresident return | Form 80-205 | Form OR-40-N |
| Part-year return | Form 80-205 | Form OR-40-P |
| Credit for other-state tax | Form 80-160 | Schedule OR-ASC-NP |
| Nonresident safe harbour | None published | None published |
| Local income tax | No | Yes |
| Revenue department | Mississippi Department of Revenue | Oregon Department of Revenue |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in Oregon and working in Mississippi 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: Mississippi → OregonBoth states — credit offsets the double tax
- Remote worker: Mississippi → OregonHome state only
- 1099 contractor: Mississippi → OregonHome state, plus the client state if you work there
Other Mississippi pairs
Questions people actually ask
I moved from Mississippi to Oregon mid-year. Do I have to file in both states?
Both states want a return, but neither taxes the whole year. Moving from Mississippi to Oregon splits the tax year at the date your residency changed: a Mississippi part-year return covers everything before it, a Oregon part-year return everything after. Income is assigned by when it was received.
How do I split my income between Mississippi and Oregon?
By when you received it, measured against the date your domicile actually changed. Income received while you were a Mississippi resident belongs on the Mississippi return and income received afterwards on the Oregon 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 Mississippi and Oregon rules on this page were last checked against Mississippi Department of Revenue and Oregon Department of Revenue 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.
- Mississippi Department of Revenue — individual income taxaccessed 2026-08-07
- Oregon Department of Revenue — individual income taxaccessed 2026-08-07