Moved from California to Louisiana Mid-Year: Which State Tax Returns Do You File?
Answer
Expect a part-year filing on each side. The point of a part-year return is that neither state taxes the whole year, so you are not double-taxed by default — but income received close to the move date has to be assigned carefully, and a lingering California source can still pull a nonresident filing along with it.
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 · CaliforniaForm 540NR (part-year resident)
File a California part-year return covering the months you lived in California. A part-year resident of California reports the income received while a California resident, plus any California-source income received during the rest of the year, and prorates the deductions and credits to the residency period.
- 2Part-year return · LouisianaForm IT-540B
File a Louisiana part-year return covering the months you lived in Louisiana. A part-year resident of Louisiana reports the income received while a Louisiana resident, plus any Louisiana-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
| California | Louisiana | |
|---|---|---|
| Taxes wages | Yes — graduated | Yes — flat |
| Reciprocity partners | None | None |
| Convenience rule | No | No |
| Nonresident return | Form 540NR | Form IT-540B |
| Part-year return | Form 540NR (part-year resident) | Form IT-540B |
| Credit for other-state tax | Schedule S | Schedule G (Form IT-540) |
| Nonresident safe harbour | None published | None published |
| Local income tax | No | No |
| Revenue department | California Franchise Tax Board | Louisiana Department of Revenue |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in Louisiana and working in California 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: California → LouisianaBoth states — credit offsets the double tax
- Remote worker: California → LouisianaHome state only
- 1099 contractor: California → LouisianaHome state, plus the client state if you work there
Other California pairs
Questions people actually ask
I moved from California to Louisiana mid-year. Do I have to file in both states?
Expect a part-year filing on each side. The point of a part-year return is that neither state taxes the whole year, so you are not double-taxed by default — but income received close to the move date has to be assigned carefully, and a lingering California source can still pull a nonresident filing along with it.
How do I split my income between California and Louisiana?
By when you received it, measured against the date your domicile actually changed. Income received while you were a California resident belongs on the California return and income received afterwards on the Louisiana 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 California and Louisiana rules on this page were last checked against California Franchise Tax Board and Louisiana 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.
- California Franchise Tax Board — individual income taxaccessed 2026-08-07
- Louisiana Department of Revenue — individual income taxaccessed 2026-08-07