How Long Can a Canadian Citizen Stay in the US?

A Canadian citizen can stay in the United States for up to six months per visit as a temporary visitor, but the length of any given stay is set by the Customs and Border Protection officer who admits you and printed on your I-94 record. That date, not a general assumption about six months, is your legal deadline to leave. Stay past it and the consequences scale quickly, from cancelled visas to multi-year bars on returning.

Your I-94 Date Is the Real Deadline

Federal regulations exempt Canadian citizens from needing a nonimmigrant visa for business or pleasure visits, so most Canadians enter in B-1 or B-2 status after inspection at the border.¹ What controls how long you can stay is the “Admit Until Date” on your I-94 Arrival/Departure Record.²

Six months is the standard maximum, but the officer can grant less depending on the purpose of your trip and how you explain it. Most I-94s are now created electronically, and at land borders you won’t get a paper stub unless you ask for one during inspection.³ Retrieve yours through the CBP I-94 website or the CBP Link mobile app after every entry. If the date is shorter than you expected, the shorter date wins.

Back-to-Back Visits and Cumulative Time

A common misunderstanding: each entry does not reset a fresh six-month clock. CBP officers look at your overall pattern of time in the country, and there is no set waiting period between visits. If your time in the U.S. starts to look comparable to or greater than your time in Canada, the burden shifts to you to prove you’re not effectively living in the United States.⁴

Spend five months in the U.S., go home for a week, and try to come back for another five, and expect hard questions. An officer may shorten your authorized stay or refuse entry outright. Evidence of ties to Canada, such as employment records, property ownership, or family obligations, helps.

Extending Your Stay With Form I-539

If you want to remain past your I-94 date, file Form I-539, Application to Extend/Change Nonimmigrant Status, with U.S. Citizenship and Immigration Services before your current stay expires.⁵ USCIS recommends filing at least 45 days before your I-94 expires and generally no more than six months in advance.⁶

To qualify, you must currently hold valid nonimmigrant status, not have violated its terms, and have a genuine temporary reason for staying longer.⁵ Along with the form, submit your I-94, a copy of your passport, and a written statement explaining why you need more time and how you will support yourself. Documenting ties back to Canada strengthens the request.⁶

As of 2026, the filing fee is $420 online or $470 by mail, with the paper fee covering biometrics. Fees change, so verify the current amount with the USCIS fee calculator before filing.

If you filed on time, you generally do not accrue unlawful presence while USCIS decides, even if your I-94 date passes in the meantime. That protection ends the moment the extension is denied, and you need to leave promptly. The 240-day rule you may have heard about applies to work-visa holders’ employment authorization, not to B-1/B-2 visitors.⁷

What Happens If You Overstay

Staying past your I-94 date, even by a single day, automatically cancels any nonimmigrant visa you hold. A replacement can generally only be issued by a consular office in your country of nationality.⁸ Because Canadians usually don’t carry a visitor visa in the first place, the bigger issue is the unlawful presence bars set by federal statute.

More than 180 days but less than one year of unlawful presence: a three-year bar on re-entry, triggered when you leave.
One year or more: a ten-year bar, whether you leave voluntarily or are removed.

The bars kick in upon departure, not while you’re still in the country.⁹ Minors under 18 do not accrue unlawful presence, and narrow exceptions exist for asylum applicants and trafficking victims. For the typical Canadian visitor who loses track of dates or decides to stay a few extra weeks, there is no built-in forgiveness. The math is unforgiving: 181 days of overstay costs three years, and crossing one year costs ten.

Long Stays Can Make You a U.S. Tax Resident

Time in the U.S. can matter to the IRS even when you’re in lawful visitor status. The substantial presence test counts days across a rolling three-year window. You meet it, and become taxable on your worldwide income, if you are physically present at least 31 days in the current year and at least 183 days over three years, using all days from the current year, one-third of days from the prior year, and one-sixth of days from the year before that.¹⁰

Spend 120 days a year for three straight years and the weighted count is 120 + 40 + 20 = 180, just under the line. A few extra days per year and you cross it.

If you do meet the test, you can still avoid U.S. tax residency by filing Form 8840, the Closer Connection Exception Statement. To qualify, you must have been present fewer than 183 days in the current year, maintained a tax home in Canada for the entire year, and taken no steps toward a green card.¹¹ File it by the tax return due date. Missing that deadline means proving with clear and convincing evidence that you took reasonable steps to comply, a much harder standard.

Working, Including Remotely, Is Not Allowed

Visitor status permits business meetings and tourism, not employment. State Department guidance is explicit that B-1 activities cannot include skilled or unskilled labor and that a visitor cannot receive a U.S.-source salary for services performed here.¹²

Remote work for a Canadian employer paid entirely in Canadian dollars sits in a gray zone the law has not clearly addressed, but there is no carve-out for it. Mention remote work plans to a CBP officer and you risk denial or a shortened stay. If you need to work while in the U.S. for extended periods, look at a work-authorized classification.

Other Ways to Stay Longer

Visitor status is not the only route. Several nonimmigrant categories carry longer authorized stays for Canadians who qualify.

TN (USMCA Professional) is available to Canadians in designated professional occupations, admitted for up to three years at a time with no cap on the number of extensions. Canadians can apply directly at the border rather than through a lengthy petition process.¹³
F-1 (Student) status lasts for the duration of your academic program, usually marked “D/S” on the I-94 rather than a specific date. F-1 students have a 60-day grace period to depart after completing the program.¹⁴
J-1 (Exchange Visitor) duration depends on the program category, with interns allowed up to 12 months and trainees up to 18 months.¹⁵
L-1 (Intra-Company Transferee) covers managers, executives, and specialized-knowledge employees moved within the same company, with a maximum total stay of seven years for L-1A and five years for L-1B.¹⁶

Each of these has its own extension rules and limits. TN is popular with Canadians because of the streamlined border process, but it requires a qualifying profession and a specific job offer from a U.S. employer.

1
eCFR. 8 CFR 212.1 – Documentary Requirements for Nonimmigrants
2
U.S. Citizenship and Immigration Services. Form I-94 Arrival/Departure Record, Information for Completing USCIS Forms
3
U.S. Customs and Border Protection. Arrival/Departure Forms: I-94 and I-94W
4
U.S. Customs and Border Protection. Documents Required for Canadian Citizens / Residents / Landed Immigrants
5
U.S. Citizenship and Immigration Services. I-539, Application to Extend/Change Nonimmigrant Status
6
U.S. Citizenship and Immigration Services. Form I-539, Instructions for Application to Extend/Change Nonimmigrant Status
7
eCFR. 8 CFR 274a.12 – Classes of Aliens Authorized to Accept Employment
8
Office of the Law Revision Counsel. 8 USC 1202 – Application for Visas
9
Office of the Law Revision Counsel. 8 USC 1182 – Inadmissible Aliens
10
Internal Revenue Service. Substantial Presence Test
11
Internal Revenue Service. Closer Connection Exception to the Substantial Presence Test
12
U.S. Department of State. Fact Sheet: U.S. Business Visas (B-1) and Allowable Uses
13
U.S. Citizenship and Immigration Services. TN USMCA Professionals
14
Department of Homeland Security. Maintaining Status
15
U.S. Citizenship and Immigration Services. Chapter 3 – Terms and Conditions of J Exchange Visitor Status
16
U.S. Citizenship and Immigration Services. Chapter 10 – Period of Stay