The I-94 Explained: The Most Important U.S. Document You Probably Do Not Have
- Ksenia Tchern McCallum
- 1 day ago
- 9 min read
Almost every serious immigration problem we see involving otherwise law-abiding visitors traces back to the same document — or rather, to its absence. The I-94 is the official record of your admission to the United States. It states the date you entered, the status you were admitted in, and the date by which you must depart.
It is not your visa. It is not your passport stamp. It is not what the officer said to you at the booth. When there is a dispute about whether you were lawfully present, the I-94 is the record that answers the question — and a great many people, Canadians especially, have never looked at theirs.
What the I-94 actually is
Formally the Arrival/Departure Record, the I-94 is generated electronically by Customs and Border
Protection when you are admitted. It records three things that matter:
• Your date of admission.
• Your class of admission — B-1, B-2, TN, L-1, H-1B, F-1 and so on.
• Your 'admit until' date, or the notation D/S meaning duration of status.
That third field governs your stay. It is set by the CBP officer at the time of admission and it is not necessarily what you expect, what you asked for, or what you received last time.
The visa is not the permission
This distinction defeats people constantly, so it is worth stating plainly.
A visa is a travel document. It is placed in your passport by a US consulate abroad and it permits you to travel to a US port of entry and request admission. That is all it does. A visa valid until 2029 does not mean you may remain in the United States until 2029.
The I-94 is the permission to remain. If your I-94 says you must depart by 12 March and your visa is valid for three more years, you must depart by 12 March. Conversely, if your visa expired last month but your I-94 remains valid, you may lawfully remain and, where your status permits it, continue working — you simply cannot re-enter without obtaining a new visa.
For Canadians, who are visa-exempt for most nonimmigrant categories, the point is even sharper: there is no visa at all. The I-94 is the only document that says anything about how long you may stay.
Why Canadians often do not have one
Here is the structural gap. Canadians entering the United States at a land border for visitor purposes are frequently admitted without an I-94 being issued — often waved through with a few questions and no documentation whatsoever. No stamp, no form, no record handed over.
Where no I-94 is issued, the position is generally treated as an admission as a visitor for six months less a day. But 'generally treated as' is doing a great deal of work in that sentence, and it is not a substitute for a record. You cannot prove when you entered. You cannot prove in what status. And you have no document evidencing that you satisfied the alien registration requirement, which applies to anyone staying 30 days or more
Air entries are different — an electronic I-94 is generally created automatically. It is the land border, and certain ferry crossings, where the gap appears.
How to check your I-94 — and why to do it every time
Go to i94.cbp.dhs.gov. Enter your passport details. The site returns your most recent admission record and, separately, your travel history for the past several years.
Do this after every single entry. Not once a year. Every entry. Three reasons:
To confirm one was issued at all.
To confirm the class of admission is correct. Errors happen — a TN worker admitted as B-2, a B-1 business visitor admitted as B-2, a status mismatch that quietly invalidates the activity you came to perform.
To confirm your 'admit until' date. This is where the assumption most commonly fails.
Correct any error immediately by attending a deferred inspection office or a CBP port of entry. Errors do not fix themselves and the burden of the error falls on you, not on the government. The official position is unambiguous: it is the traveller's responsibility to verify the terms of their own admission.
Canadians: do not assume you have six months
This is the single most important paragraph in this article, and it deserves care because it contains both a legal point and a practical one that do not match.
The legal position
Canadian citizens admitted as B-2 visitors are commonly granted up to six months. But the CBP officer has complete discretion over the period of admission. An officer may admit you for one month, one week, or a single day — and is not required to explain the decision or to draw it to your attention. Practitioners regularly encounter frequent travellers who assumed six months and had in fact been admitted for a matter of days.
If you never check your I-94, you will not know. And if you stay beyond the date on it, you are unlawfully present regardless of what you believed.
The practical position: the six-month-a-year problem
Now the point that is not written in any regulation but governs a great deal of what actually happens at the border.
There is no rule in US immigration law stating that a Canadian may spend no more than six months in any twelve-month period. No statute says it. No regulation says it. Nonetheless, CBP enforces something that closely resembles it, and understanding why is essential for anyone who spends substantial time in the United States.
The B-2 category is for temporary visits. Its foundation is that you maintain a residence abroad that you have no intention of abandoning, and that your stay in the United States is temporary. Once your cumulative time in the country approaches or exceeds half the year, an officer's assessment naturally shifts. The questions that follow are predictable, and they are the right questions for the officer to ask:
• If you spend most of the year here, where do you actually live?
• What ties do you still maintain in Canada — a home, employment, family, tax residency?
• How are you supporting yourself during these extended stays?
• Are you working in the United States?
That final question is the one that causes the damage. An officer who cannot reconcile a long stay with a visible source of support will consider whether you are working without authorisation. Remote work for a Canadian employer while physically in the United States occupies genuinely contested ground and should not be assumed to be safe. Any work for a US employer, paid or unpaid, is a clear violation.
What happens when the officer is not satisfied
The consequences escalate quickly and are not proportionate to the traveller's sense of having done nothing wrong:
Referral to secondary inspection, where the questioning is longer and your phone and belongings may be examined.
Admission for a substantially shorter period than you expected — a common outcome, and one that can strand plans.
Withdrawal of your application for admission — you are permitted to turn around and go home. Unpleasant but not a formal bar.
Refusal of admission, which is recorded and which you must disclose in every future application.
Expedited removal, which carries a five-year bar on re-entry and cannot be appealed in the ordinary way. This is a real outcome for visitors found to have misrepresented their purpose or to have worked without authorisation.
How to protect yourself
Track your days. Keep an actual record of entries and exits rather than relying on memory. Your I-94 travel history is the starting point.
Keep the cumulative total comfortably under half the year unless you have a considered reason and advice to support it.
Carry evidence of Canadian ties when you cross for a long stay — property tax or utility bills, a mortgage statement, employment documentation, a return ticket, evidence of family obligations.
Be able to explain how you are supporting yourself, and have documentation.
Do not work in the United States. If your circumstances involve remote work, get advice specific to your facts rather than assuming.
Answer questions accurately and briefly. Volunteering is not helpful; misrepresenting is catastrophic and carries a permanent bar.
Overstay: the consequences are severe and automatic
Remaining past your I-94 date generates unlawful presence, and the bars that follow are among the harshest provisions in US immigration law.
More than 180 days but less than one year of unlawful presence, followed by departure — a three-year bar on re-entry.
One year or more of unlawful presence, followed by departure — a ten-year bar.
Waivers exist but are discretionary, demanding and generally require a qualifying US citizen or permanent resident relative who would suffer extreme hardship. They are not a plan.
There is a second consequence that is less known and more immediate. Under section 222(g), a nonimmigrant who remains beyond the authorised period generally voids the visa in their passport, and future visa applications must ordinarily be made at a consulate in their country of nationality. For someone whose life depends on regular US travel, this alone can be devastating.
The point for Canadians is uncomfortable but simple: if you never received an I-94 and never checked, you may be accruing unlawful presence without knowing it. The government's records will reflect a position you never saw.
The related obligations you should be tracking
Three separate calculations attach to time spent in the United States, and they do not align with one another. Anyone spending several months a year across the border should track all three.
Alien registration — 30 days
Non-citizens staying 30 days or more must be registered and must carry evidence of registration. An I-94 satisfies this. Where no I-94 was issued, Form G-325R must be filed. Covered in detail in our separate article on alien registration.
US tax residency — the substantial presence test
The IRS applies a weighted three-year formula: all days in the current year, one-third of days in the prior year, one-sixth of days in the year before that. Reach 183 weighted days and you are treated as a US resident for tax purposes, with worldwide reporting obligations.
Days are counted as calendar days, so an evening arrival and an early-morning departure count as two days. The closer connection exception, claimed on Form 8840, allows a person present fewer than 183 days in the current year who maintains a home and closer ties in Canada to avoid US residency — but it must be filed, and the deadline is 15 June of the following year. Many snowbirds who qualify never file it.
Provincial health coverage
Provincial health plans impose their own minimum physical presence requirements to maintain coverage, and they vary by province. Losing provincial coverage while abroad is a costly discovery to make in an emergency room. Confirm your province's rule before planning an extended absence.
None of these three tests knows about the others. It is entirely possible to satisfy one and fail another in the same year.
A short checklist
Check i94.cbp.dhs.gov after every entry. Save a copy.
Confirm the class of admission and the 'admit until' date each time.
Correct any error at a deferred inspection office promptly.
Request an I-94 at a land crossing, or obtain one in advance online, when your stay will exceed 30 days.
Track cumulative days in the United States across the calendar year and the prior two years.
Depart on or before your 'admit until' date, or file a timely extension request before it expires.
Carry evidence of your ties to Canada and your means of support on long stays.
Speak to a cross-border accountant if your day counts are approaching the substantial presence thresholds.
Frequently Asked Questions
What is an I-94 and where do I find it?
It is your official record of admission to the United States, showing your entry date, status and authorised period of stay. Retrieve it at i94.cbp.dhs.gov using your passport details.
Do Canadians get an I-94 at the land border?
Often not. Canadians crossing by land for visitor purposes are frequently admitted without one. You can request one at the port of entry or apply in advance online, and a fee applies.
Am I automatically given six months?
No. Six months is common for B-2 visitors but it is entirely at the officer's discretion, and shorter admissions are granted without explanation. Always check your I-94.
Is there a rule limiting Canadians to six months a year?
No such rule exists in the regulations. But CBP scrutinizes cumulative time closely, and stays approaching or exceeding half the year invite questions about your residence, your ties to Canada, how you are supporting yourself and whether you are working unlawfully.
What happens if I overstay?
Unlawful presence of more than 180 days triggers a three-year bar on re-entry after departure; one year or more triggers a ten-year bar. Under section 222(g) an overstay also generally voids the visa in your passport.
Can I work remotely for my Canadian employer while visiting the US?
This is contested ground and depends on the specific facts. Do not assume it is permitted. Take advice before relying on it.
My I-94 shows the wrong status. What do I do?
Correct it promptly at a deferred inspection office or a port of entry. Errors do not resolve themselves and the consequences fall on you.
Why Work with an Immigration Lawyer?
If you have never checked your I-94, you may be relying on an admission period you never actually saw. Officers set the date at their discretion and are not required to draw it to your attention, and a stay that exceeds it generates unlawful presence regardless of what you believed. More than 180 days triggers a three-year bar on re-entry; a year triggers ten.
At Tchern McCallum Immigration Law, we:
• Review your admission history and identify any period of unlawful presence already accrued
• Correct an I-94 that shows the wrong status or the wrong date
• Advise on cumulative time, so a pattern of long stays does not undermine your visitor status
• Deal with a refused entry, a withdrawn application for admission, or an existing bar
Our goal is to keep your ability to cross the border intact.
Ready to Travel Without Worrying?
There is no rule capping Canadians at six months a year — but CBP scrutinizes cumulative time closely, and the questions that follow a long stay are about where you really live and how you are supporting yourself. Those are worth being able to answer.
Contact Tchern McCallum Immigration Law today to book a consultation, particularly if you spend extended periods in the United States or have ever been turned around at the border.
