A day count can be one part of a state residence test. Identify the state, home requirement and counting convention before treating 183 days as a limit.
Name the test you are applying
Domicile concerns the permanent home. Statutory residence can apply under a separate test involving days and a home. Someone can remain domiciled in a state while spending fewer than 183 days there.
Use the actual state threshold
For example, New York generally combines a qualifying permanent place of abode with more than 183 days for a nondomiciliary’s statutory-residence test. Other states use different thresholds and conditions. Exactly 183, more than 183 and 200 are not interchangeable rules.
Keep records that support the count
Maintain a daily location calendar backed by travel receipts and other contemporaneous records. A state may count part of a day, with specific exceptions. Overnight location alone may not settle the count.
Check the remaining tax exposure
A person who is nonresident can still owe tax on state-source wages, rentals or business income. Review the detailed counting guide and the relevant state authority before deciding whether a return is required.
Sources and next steps
- New York: residency, source income and telecommuting
- New York income-tax definitions and exceptions
- California FTB Publication 1031: resident status
Source review: September 17, 2026. Service support can help organize documents; tax and legal classifications depend on the applicable rules and your facts.