Moved from New Mexico to California Mid-Year: Which State Tax Returns Do You File?
Answer
Two returns, split at the move date. New Mexico and California both tax residents, so each takes the portion of the year you were one. This is a residency question rather than a sourcing question — reciprocity agreements and convenience rules have nothing to do with it.
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 · New MexicoForm PIT-1 with Schedule PIT-B
File a New Mexico part-year return covering the months you lived in New Mexico. A part-year resident of New Mexico reports the income received while a New Mexico resident, plus any New Mexico-source income received during the rest of the year, and prorates the deductions and credits to the residency period.
- 2Part-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.
The two states, side by side
| New Mexico | California | |
|---|---|---|
| Taxes wages | Yes — graduated | Yes — graduated |
| Reciprocity partners | None | None |
| Convenience rule | No | No |
| Nonresident return | Form PIT-1 with Schedule PIT-B | Form 540NR |
| Part-year return | Form PIT-1 with Schedule PIT-B | Form 540NR (part-year resident) |
| Credit for other-state tax | Form PIT-1 (credit for taxes paid to another state) | Schedule S |
| Nonresident safe harbour | None published | None published |
| Local income tax | No | No |
| Revenue department | New Mexico Taxation and Revenue Department | California Franchise Tax Board |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in California and working in New Mexico 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: New Mexico → CaliforniaBoth states — credit offsets the double tax
- Remote worker: New Mexico → CaliforniaHome state only
- 1099 contractor: New Mexico → CaliforniaHome state, plus the client state if you work there
Other New Mexico pairs
Questions people actually ask
I moved from New Mexico to California mid-year. Do I have to file in both states?
Two returns, split at the move date. New Mexico and California both tax residents, so each takes the portion of the year you were one. This is a residency question rather than a sourcing question — reciprocity agreements and convenience rules have nothing to do with it.
How do I split my income between New Mexico and California?
By when you received it, measured against the date your domicile actually changed. Income received while you were a New Mexico resident belongs on the New Mexico return and income received afterwards on the California 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 New Mexico and California rules on this page were last checked against New Mexico Taxation and Revenue Department and California Franchise Tax Board 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.
- New Mexico Taxation and Revenue Department — individual income taxaccessed 2026-08-07
- California Franchise Tax Board — individual income taxaccessed 2026-08-07