What’s this 30-Day Rule for US Entries & Exits?

Recently our content team received several queries concerning the ways US border authorities apply the so-called 30-day rule for Canadian visitors who temporarily leave the US and then  return, having perhaps taken a cruise out of Florida or after making a side-trip to Mexico or the Caribbean.

How do such trips affect the Canadian visitor’s B2 visa allowance? (The B2 is the visa category under which Canadians are allowed to visit the US for vacation or tourism purposes for a total of 6 months during any continuous 12 month period. It’s a paperless visa and is usually recorded by a passport stamp).

The simplest explanation is that if you are already in the US and you take, say, a 1 or 2 week cruise out of a US port, and return to that port, those days—even though spent in international waters, will count against your B2 visa  6month allowance. Similar consequence for a side-trip to Mexico, or Costa Rica, or even back to Canada to spend Christmas with the family. If the trip is less than 30 days, it will be counted against your 6month allowance.

If, however, your trip out of the US is 30 days or longer, the rule changes and you will not be docked those 30 or more days. Instead, your return to the US will be recorded as a new, separate trip. No extra days tallied.


Exceptions, and Alerts for Cruisers

But as with all established rules, there are exceptions.

If you’re one of the approximately 750,000 Canadians who take cruise trips each year—and you fly directly from Canada to your embarkation city (e.g. Fort Lauderdale or Miami), and you go from the airport to the sea port (no 1 or 2day pre or post sailing trips to visit friends), your cruise days will not be tallied against your 6month allowance. Ditto if you’re flying from Montreal to Rome via Boston, or through Miami on route to Buenos Aires. No big deal if you’re only a casual visitor to the US, but a potential concern if you’re a snowbird who counts on spending every last possible day in the sun.

I was recently asked by a seasoned traveler how these rules applied to his recent itinerary: by air from Canada to Tahiti, then to Hawaii where he boarded a cruise ship to Los Angeles, and from there returned by air to Canada.

I responded that from the time he entered Hawaii (a US state), sailed to Los Angeles, and finally re-entered Canada, he would have been on the B2 US visa clock—just as if he had sailed out of Miami into the Caribbean and returned to Miami 14 days later. That he sailed in international waters is irrelevant.


The Eyes are on You

With US and Canadian border officials sharing their data, you must assume that any time you cross over into US territory and step back into Canada from the US, you will leave a paper (or a cyber) trail.

And while you’re counting, remember that any part of any day you are on US soil—whether you’re just arriving, or departing, will be counted as one full day of your 6 month allowance.

You’ll notice that I’m using the term “6 month” allowance as opposed to the 182 days most snowbirds have imprinted on their brains. That’s because I recommend you stay on the safe side, keep to 180 and leave one at least a 1 or 2 day cushion in your B2 visa allotment—for the unexpected.

Border protection agents have a lot of discretion when it comes to allowing visitors into the country. And they also have differing interpretations about how to apply the  6 month B2 rule—some will generally consider it as meaning 180 days; others as continuous calendar months (April 15 to October 15–actually 183 days); some as 182—the snowbird mantra.

Don’t try to split hairs with border agents. They may not have a sense of humour. Play it safe.


Heading to the United States this winter? Make your days and insurance count.


  1. Hi Milan,
    We have a condo in Florida and arrived in florida On Non 2nd. We then went home to Canada for three weeks at Christmas and returned to Florida Dec 30.

    Do the three weeks back in Canada count against our 182 day allotment.

    The border agent stamped our passport for 6 months at customs on the way back to florida on dec 30th.

    Is this 30 day rule for taxes or for immigration purposes?


    • Ingle International
      Ingle International Reply

      Hi Blaine,

      Yes, they count against your 180 days. The fact the agent stamped your passport for six months does not mean you can disregard the 180-day allotment. Another agent can play it by the book and pay no attention to the stamp. These agents are not perfect, they make mistakes or read rules differently but don’t get caught in the middle.

  2. Alain Parent Reply

    I own a home in Florida. I go in November, return to Canada for Two weeks in mid December to spend Christmas with my family and return to Florida the first week of January. Do these two weeks count in my six months in the USA ?

    • Ingle International
      Ingle International Reply


      The two weeks will count towards your allocated six months. The 30-day rule means that if you leave the US for a short trip (less than 30 days), those days will count as having been spent in the US. If you exited the US for 30 days or longer your re-entry will count as a new trip, and will not count towards your six month allotment.

  3. I am a Canadian snowbird! I would like to make a 2 week trip to Alabama and Florida the first part of October . Return to Canada for 2 or 3 week before heading to Florida for the winter. Would the time back to Canada still be counted as US or would it be a separate trip ?

    • Ingle International
      Ingle International Reply

      According to the rules, these would be considered two separate trips. When you go to Alabama you will tell the border agent when you will be returning to Canada. When you go to Florida you will be doing the same. You will not be interrupting either of these trips to return home. Don’t worry about that so-called 30-day rule unless you interrupt a long-term trip to return home for Christmas or pop over to Mexico.


  4. I am a snowbird who live on the Canada and us border my dilemma about the 30 day rule entry exit is when I return from my 4 month stay in florida do I need the 30 days out of the US to go shopping in the us.? Note that I do go shopping In the US throughout the year without exceeding my 180 days I look forward to your reply

    • Ingle International
      Ingle International Reply

      Hi Danielle,

      You misinterpret the 30-day rule, but so do many others. That rule only means that if you leave the US for a short trip (less than 30 days) while you are snow birding through the winter, those days will count as having been spent in the US. If you exit for 30 days or longer, your re-entry will count as a new trip and they will not be “charged” against your six month allotment. In your case, you can go shopping across the border the day after you get back, but it will count against your six month allotment. Just don’t go over the 180 days within any 365-day period.


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