Moving to California: follow the facts.

A new mailing address is evidence, not a complete tax conclusion. California residency asks why you are in or outside the state, where your continuing home is, and how the facts fit together. A 183-day shortcut alone does not decide California residency. Start with a dated timeline and the FTB’s own framework.

1. 01

   Build the timeline before choosing a label

   What changed, on what date, and what evidence supports it?

   Record arrival and departure dates, homes available, work arrangements, family location, and the purpose and expected duration of each stay. Preserve leases, travel and employment records and other relevant evidence.

   Calendar days matter, but a driver’s license or address change does not resolve every competing fact. Identify uncertain dates explicitly; do not pick a residency date simply because it produces a preferred tax result.

   • Create one dated chronology.
   • Separate documented facts from assumptions.
   Mark this step reviewedSources [1]
2. 02

   Distinguish residence from domicile

   Is the presence or absence temporary or transitory?

   California treats a person present for other than a temporary or transitory purpose as a resident. A person domiciled in California can also remain resident while outside the state for a temporary or transitory purpose.

   Domicile concerns the permanent home to which a person intends to return; it is not always identical to residence. Publication 1031 discusses connections and special situations. A move out, an extended work assignment, military rules, and safe-harbor provisions need their own factual analysis.

   • Identify the claimed domicile and continuing connections.
   • Read the applicable exceptions rather than assuming a day-count rule.
   Mark this step reviewedSources [1] [2]
3. 03

   Sort income by both period and source

   When was it received, and what makes it California-source?

   A part-year resident generally considers worldwide income during the resident period and California-source income during the nonresident period. Nonresident wage sourcing generally follows where services were performed, not merely the employer’s headquarters or the bank receiving the paycheck.

   Create separate lines for wages, business income, rent, investment income and deferred compensation. California property rent and services performed in the state can remain relevant before or after residency. Bonuses, equity compensation, business sourcing and timing differences can require additional allocation rules.

   • Identify resident and nonresident periods.
   • Document work location and each income category’s source.
   Mark this step reviewedSources [3]
4. 04

   Use the state computation, not a fraction of federal tax

   Which year’s California adjustments and 540NR rules apply?

   Form 540NR can use total-year income in determining the effective rate applied to California taxable income. A move halfway through the year does not simply mean half of a full-year tax bill.

   California and federal treatment can differ. Check the applicable-year Schedule CA (540NR), adjustments and instructions rather than copying every federal amount. Keep separate state basis and carryover information where differences require it; review any other-state credit under its own rules.

   • Read the correct-year 540NR computation.
   • Identify federal–California differences requiring separate records.
   Mark this step reviewedSources [4] [5]

The resident date in the case is an assumption, not the output of a residency test. This guide does not determine domicile, sourcing, filing obligations, credits, or the tax due in a real multistate situation. Russian text is an educational explanation of the English-language sources.