The 'Nine-Month Presumption' and the 183-day rule California
Although California doesn't strictly adhere to a 183-day rule, it does employ a 'nine-month presumption' rule. If you spend more than nine months (approximately 270 days) in California during a tax year, you're presumed to be a resident. This is more lenient than the 183-day rule California doesn't officially use, but it's still crucial to track your days carefully. The 183-day threshold, while not definitive in California, can still be a useful benchmark for taxpayers to monitor their time spent in the state. Remember, even if you're under these thresholds, other factors may still classify you as a resident.