Wyoming 183-Day Rule: Does Day Count Even Apply?

Wyoming's actual test

Wyoming has no state income tax residency test to pass, because it has no individual income tax. There is no statutory day-count threshold, no permanent-place-of-abode rule, and no state agency that determines 'resident individual' status for income tax purposes the way California, New York, or the other states in this dataset do. The genuinely operative question for someone moving to Wyoming to change their tax domicile is not what Wyoming requires, it's whether the person's former state agrees the domicile actually left. Wyoming residency still matters for other purposes (voter registration, in-state tuition, hunting and fishing licenses, vehicle registration), each governed by its own separate statute.

Presumptions

None; not applicable in the absence of an income tax residency framework.

Domicile controls instead

Wyoming's own law does not need to define domicile for income tax purposes, since there's no income tax it applies to. What matters in practice is whether the taxpayer's prior state of domicile (California, New York, and other high-tax states are the ones that generate the most disputes) is satisfied under its own domicile test that a genuine change occurred. Evidence commonly used to support a Wyoming domicile claim mirrors what any state would look for: a real, used Wyoming home (not just a mailing address), Wyoming driver's license and vehicle registration, Wyoming voter registration, time actually spent in Wyoming, and severed or reduced ties to the old state.

Methodology and sources

The threshold, presumption, and rule text shown here come directly from Wyoming's researched dossier, reviewed against 7 primary sources including Wyoming Department of Revenue. This is general information, not tax or legal advice.

183-Day Rule Checker

Check your day count against Wyoming's actual rule.

Jurisdiction

Entry method

Days spent in Wyoming this tax year

Domicile controls

No statutory day-count test applies

Days counted

0

This jurisdiction does not run a bright-line day-count residency test. Domicile, the place you treat as your true, fixed, permanent home, controls instead, regardless of how many days you spend here.

Wyoming's actual test

Wyoming has no state income tax residency test to pass, because it has no individual income tax. There is no statutory day-count threshold, no permanent-place-of-abode rule, and no state agency that determines 'resident individual' status for income tax purposes the way California, New York, or the other states in this dataset do. The genuinely operative question for someone moving to Wyoming to change their tax domicile is not what Wyoming requires, it's whether the person's former state agrees the domicile actually left. Wyoming residency still matters for other purposes (voter registration, in-state tuition, hunting and fishing licenses, vehicle registration), each governed by its own separate statute.

Presumptions

None; not applicable in the absence of an income tax residency framework.

General information based on published dossier research, not tax or legal advice. Consult a qualified advisor before relying on a day count for a filing position.

Wyoming Day-Count FAQ

Does Wyoming have a 183-day rule or any residency test for income tax?+

No. Wyoming has no individual income tax, so it has no statutory day-count test, no permanent-place-of-abode rule, and no domicile test for tax purposes. The day-count and domicile rules that actually matter when you move to Wyoming are your former state's, since that state decides whether it agrees you've genuinely left.

How long do I have to register my car and get a Wyoming driver's license after moving here?+

Vehicle registration is generally due within 30 days of establishing residency or gaining Wyoming employment. Wyoming's driver's license timing is more loosely enforced than most states, commonly cited guidance points to roughly a year, or upon expiration of your out-of-state license, though a genuine domicile claim is stronger if you don't wait that long.

Read the full Wyoming residency guide

Day count is one part of the picture. The full guide covers domicile, exit audit risk, the establishment checklist, tax profile, and special situations for Wyoming.

Open the Wyoming residency guide