What the calculator covers
This tool covers one thing: the unlawful presence bars in US immigration law, as described by USCIS. It does not cover other countries, and it does not cover other consequences of staying past an authorised date. We removed country-by-country overstay tables because we could not verify them against official sources.
USCIS says unlawful presence generally starts the day after the date on your Form I-94, if you were admitted until a set date. If you were admitted for duration of status, it generally starts the day after your status ends, plus any authorised grace period. Enter that date as the end of your authorised stay.
The thresholds
- More than 180 days but less than 1 year in one stay: a 3-year bar can apply if you leave voluntarily before removal proceedings begin and seek readmission within 3 years.
- 1 year or more in one stay: a 10-year bar can apply if you leave or are removed and seek readmission within 10 years.
Exactly 180 days is below the first threshold, because the law says more than 180 days. Waivers may exist for some people. Whether a bar applies to you, and whether you can get a waiver, is a question for an immigration attorney.
Worked example
Authorised stay ended: 1 Mar 2027 Departure: 30 Aug 2027 Days past the date: 182 (1 Mar to 30 Aug) Category: more than 180 days, less than 1 year Departure on 28 Aug 2027 = 180 days: not more than 180
The tool counts days as departure date minus the end date. Because that is a count by this site, not an official one, it warns you when the result is within a few days of 180 days or one year.
Cases where the count does not apply
USCIS lists exceptions where time does not count towards the 180-day and one-year bars, including people under 18 and people with a bona fide pending asylum application. The rules differ for those admitted for duration of status. This tool does not know your situation, so it cannot apply these exceptions. A recent USCIS notice also covers travel on Advance Parole after more than 180 days of unlawful presence. Read the USCIS page and ask an attorney before you travel.
Frequently asked questions
Which date do I enter as the end of my authorised stay?
The date on your Form I-94 if it shows a set date. If you were admitted for duration of status, the date your status ended, which is a legal question. Do not use the visa expiry date.
Is 180 days enough to trigger the 3-year bar?
USCIS describes the bar as applying to more than 180 days but less than one year, so exactly 180 days is below it.
Does this tell me whether I can return to the US?
No. It only shows where your day count falls against the unlawful presence thresholds. Admissibility depends on many other things.
What about overstays in the UK, Canada, Australia or Schengen?
This tool does not cover them, because we could not verify consequences against official sources. Check the official immigration website of the country in question.
Can a waiver remove a bar?
USCIS says waivers may be available for some inadmissibility grounds, depending on the benefit sought. Ask an immigration attorney.