Updated July 2, 2026
How it's calculated
Enter the length of your single longest trip outside the United States, in days. The calculator checks that number against two statutory markers USCIS uses when it reviews continuous residence: 180 days and 365 days. With the tool's default of 45 days, the result reads "No automatic break," because 45 days falls well short of the six-month mark where the analysis starts to matter. Raise that number to 200 and the result flips to a rebuttable presumption. Raise it to 400 and continuous residence breaks outright, restarting the clock.
The rule tests your single longest absence, not your combined days abroad. An applicant who took four separate 90-day trips has not triggered this rule, even though those trips add up to 360 days away, close to a full year. That distinction trips people up constantly, so it bears repeating here: this calculator looks at your longest single trip only. Adding up every day you spent outside the country is a different test, called physical presence, and it has its own calculator and its own required minimum.
| Trip length | Effect on continuous residence |
|---|---|
| Under 180 days | No automatic break |
| 180 to 364 days | Rebuttable presumption of a break |
| 365 days or more | Break in continuous residence; the clock generally restarts |
Continuous Residence Details
A handful of edge cases come up often enough to name directly. First, a trip that starts just under a year and gets extended past 365 days by an emergency still counts as a break; USCIS looks at the actual length of the absence, not your original plan. Second, certain government employees, religious workers, and researchers stationed abroad can apply for an exception under INA 316(b) using Form N-470, which preserves continuous residence during a qualifying long-term assignment; that exception has to be filed before or during the absence, not after the fact. Third, if a break is found, the required residence period does not disappear entirely, it restarts from your date of return, which pushes your eligibility date out by however long you were gone. Finally, remember that continuous residence and good moral character are reviewed together in some cases: an absence long enough to trigger a presumed break can also draw scrutiny of your U.S. tax filings during that period, so the two issues often surface at once.
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