UntildFind the California day-count rules relevant to your stay, with calculators, counting assumptions and official sources.
| Rule | Key numbers | Official reference |
|---|---|---|
| California — nine-month presumption | Nine-month presumption · day reminder is approximate | California Franchise Tax Board Publication 1031 ↗ |
California presumes residence after more than nine months, but residence generally depends on temporary/transitory purpose and the full facts. A fixed-day proxy is not an exact conversion of nine calendar months.
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