Country guide
United States travel days: admission, tax and citizenship
US admission duration, federal tax residence and naturalization presence are separate systems. A visa’s expiry does not state the admitted-until date. The IRS weighted test does not control immigration status, and naturalization has its own physical-presence and continuous-residence rules.
At a glance
Separate systems, separate records.
| System | Who it concerns | Period | Authority | Review status |
|---|---|---|---|---|
| Admission record | Non-citizens admitted at the border | Admitted-until date or duration of status | U.S. Customs and Border Protection | Volatile · review by 2026-08-22 |
| Substantial presence test | Non-citizens checking federal tax residence | Weighted three-calendar-year test | Internal Revenue Service | Monitored · review by 2026-10-22 |
| Naturalization presence | Eligible citizenship applicants | Basis-specific statutory period | U.S. Citizenship and Immigration Services | Monitored · review by 2026-10-23 |
Admission duration
CBP determines the authorized stay at entry. Review the admitted-until date or duration-of-status notation in the official record rather than calculating a universal visitor allowance.
Federal tax presence
The IRS substantial presence test weights countable days across three calendar years. Exempt-individual days, exceptions and treaty claims require separate review.
Naturalization
USCIS applies basis-specific physical-presence and continuous-residence requirements. Keep trips and long absences available for review instead of transferring an IRS total into a citizenship calculation.
Keep records by purpose
Save the I-94 admission record, tax-presence working papers and citizenship trip evidence separately. Reconcile each timeline against the responsible authority’s record instead of assuming one federal day total transfers to another system.
Official record and rule sources
Check the authority.
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