How Long Can a Canadian Stay in the US?

The Two Clocks: Immigration Days vs Tax Days

Ask "how long can I stay" and you will get two true answers that contradict each other, because two different agencies are keeping two different clocks.

The immigration clock is the one everyone knows. Canadians do not need a visa to visit; at the border you are typically admitted as a visitor for up to six months per entry, at the officer's discretion, and the electronic I-94 record of your entry is what controls, not folklore about "six months minus a day." Overstay that admission and you have an immigration problem, which is not our field and not this page.

The tax clock is the one that actually governs a snowbird's life, because it runs out first. The IRS applies a formula called the substantial presence test, and it does not care what your admission stamp says. It counts this year's days plus weighted fractions of the prior two years, and once the total reaches 183, the IRS presumes you are a US tax resident, which would put your worldwide income, Canadian pension and all, inside the US system. The formula bites at a rhythm of about 122 days a winter, months before immigration would blink. So the practical answer to "how long can I stay" is not the immigration number. It is the tax math, worked out next.

The 183-Day Math, Worked Out

You are a presumed US tax resident for a year if both of these hold. You were in the US at least 31 days during that year, and your weighted three-year total reaches 183. Here is the weighted total.

• all of your US days in the current year, plus
• one third of your US days in the prior year, plus
• one sixth of your US days in the year before that.

Now the worked example that decides most snowbird winters. Suppose you spend the same number of days in Florida every year. At a steady 120 days, the count runs 120 this year, plus 40 (a third of 120), plus 20 (a sixth of 120), totals 180. Under the line. At a steady 122 days, it runs 122 plus about 41 plus about 20, which reaches 183. Over the line. Two extra days a winter, every winter, is the whole difference. Treat 120 as arithmetic, not as a safe harbor. The formula looks at your actual three-year history, so one long winter (a health problem, a late spring, a new grandchild) can push the next two years over even if each of them is short.

Counting rules matter too. Any day you are present for any part of the day counts as a full day, including the arrival day, the departure day, and a day trip. The narrow exceptions include days as a regular commuter to US work and stopovers under 24 hours in transit between two other countries, none of which describes a Florida winter.

Crossing the weighted 183 is not the end of the story. It only means the presumption applies, and Canadian snowbirds have a purpose-built exception, next.

Form 8840: The Closer Connection Exception

Form 8840, the closer connection statement, is the one-page filing that keeps a snowbird Canadian for US tax purposes even after the weighted formula reaches 183. It works if all four of these hold for the year.

• you were in the US fewer than 183 actual days that calendar year (the weighted total can be over; the current-year count cannot);
• you maintained a tax home in Canada for the entire year (your regular home base, in plain terms);
• you had a closer connection to Canada than to the US, counting home, family, doctors, bank accounts, driver's licence, health coverage, voting, the life you would point to if asked where you live; and
• you had taken no steps toward a US green card and had no application pending. Starting a permanent-residence process, even hopefully, kills the exception.

The deadline is the due date of a US nonresident return. For a typical snowbird with no US wages, that means June 15 of the following year. If you file a Form 1040-NR (say, because you rent out the condo), the 8840 attaches to that return; if you have no return to file, the form is mailed on its own to the IRS service center in Austin. Filing it does not cost tax; it is a statement, not a payment.

The penalty for skipping it is the quiet part. File late or not at all and you are no longer eligible to claim the exception, and the IRS may simply treat you as a US resident for the year; the escape hatch requires clear and convincing evidence that you acted reasonably, which is a hard standard to meet after the fact. For a snowbird whose weighted count crosses 183, the June 8840 should be as routine as closing up the condo.

What Happens If You Blow the Day Count

Name the fear plainly. If you become a US tax resident, the US taxes your worldwide income on a Form 1040, including Canadian pensions, investment income, and gains. And the income tax is often not the worst of it. US residents must disclose foreign accounts, which for you means your ordinary Canadian life, starting with the FBAR for Canadian bank, brokerage, and registered accounts once they total over $10,000 US, and Form 8938 on top of it. RRSPs and RRIFs get special relief that keeps their growth deferred and out of the harshest trust reporting, but TFSAs and RESPs sit in a contested gray zone that needs case-by-case review. The penalties on that reporting stack dwarf most people's actual tax, which is why the day count deserves respect.

There is a fallback for someone who stayed 183 days or more in the actual year, when Form 8840 is off the table, and that is the treaty tie-breaker. The US-Canada treaty decides which country a dual resident "really" lives in through a cascade of tests (permanent home, then center of vital interests, then habitual abode, then citizenship), and a snowbird whose life is anchored in Canada usually wins it. It is claimed by filing a nonresident return with Form 8833 attached. But be honest about its weaknesses. Unlike the 8840 exception it is a fact-heavy position that invites IRS scrutiny, and whether a treaty tie-breaker also relieves the FBAR filing duty is contested; one federal court has said yes, but the question is not settled, so nobody should plan a winter around it. The 8840 lane is clean; the tie-breaker is a repair, not a plan.

The Canadian Snowbird Visa Act: Proposed, Not Law

You have probably seen the headlines about a bill to let Canadian snowbirds stay 240 days a year. Here is the current, honest status. Companion bills in the House and Senate would allow Canadian citizens 50 and older who maintain a residence in Canada and own or rent a US residence to be admitted for up to 240 days in any 365, with no US employment. As of August 2026, both bills sit in committee with no floor vote. It is a proposal, not law, and proposals like it have appeared and died in prior Congresses. Do not plan a winter around it.

And notice the trap nobody mentions in the headlines. The bills would move the immigration clock, not the tax clock. The closer connection exception requires fewer than 183 actual days in the year. A snowbird who used the full 240 days would blow past that cap, lose Form 8840, and be left leaning on the treaty tie-breaker, the weaker position described above, plus the full weight of the weighted formula in every following year. If the Act ever passes, the snowbirds who use it will need more tax planning, not less.

Your Winter Calendar: Counting Days and Keeping Proof

The habits that keep a snowbird out of trouble are boring and cheap.

• Count every partial day. Arrival and departure days both count. So does the day trip. Keep a simple running tally; a note on the calendar beats a guess in April.
• Track the three-year window, not the season. Your number this year is this year's days plus a third of last year plus a sixth of the year before. After one long winter, shorten the next two.
• Check your I-94. Your official entry and exit record is online, and it is what the government believes about your travel. Pull it once a year and reconcile it against your own tally.
• Keep the closer-connection evidence as you go. That means the Canadian driver's licence, provincial health coverage, the home you keep, and where your accounts, doctors, and family sit. Form 8840 asks about exactly these, and they are also what wins a treaty tie-breaker if you ever need one.
• File the 8840 every June it applies. Make it a ritual with the tax return, not a question you revisit each year.

One more calendar item, flagged with appropriate caution. Immigration firms report a federal registration rule in force since April 2025. Visitors who were not registered at entry and stay 30 days or more must register with US immigration authorities (Form G-325R), which can reach Canadians who drive across the land border and are never issued an I-94. We could not confirm the current details on the official government page while preparing this guide, and we are not immigration lawyers. Before a long stay, check your I-94 record and confirm the current registration requirements with an immigration lawyer.

When to Call a Lawyer About Your Day Count

Call before the line when the plan is changing, whether you are buying in Florida, retiring into longer winters, renting the condo out (which adds a US filing that changes how the 8840 is submitted), or tempted by a 200-day year. Planning around the line is inexpensive, and it usually happens inside the same consult where we handle the deed and the estate plan. Call after the line when something slipped, such as a missed 8840, a 200-day year that needs the tie-breaker, or several unfiled years that need cleanup before they compound. We handle the US side and coordinate the Canadian side with your accountant at home.

And keep the day count in perspective. It is one of five US problems a Florida winter creates for a Canadian. The condo itself carries a US estate tax filing duty above $60,000 of US assets (usually with zero tax, thanks to the treaty, but the filing and the frozen-asset wait are real), a will trap, an ownership-structure trap, and a 15% withholding at sale. The umbrella guide is Canadian snowbirds in Florida, and the estate-tax deep dive is US estate tax for Canadians. If you are not wintering but actually moving, that is a different project with different math. Start with pre-immigration tax planning and Florida domicile instead.

We are not immigration lawyers, and nothing here is immigration advice. The tax math, the forms, and the planning around them are exactly what the free consult is for.

Frequently Asked Questions

Common Situations

The couple at a steady 150 days. A retired Toronto couple spends five months in Boca Raton every winter, about 150 days a year, so their weighted count is 150 plus 50 plus 25, which is 225, far over 183. They are exactly who Form 8840 exists for, with under 183 actual days, home and life in Ontario, and no green-card plans. They file the one-page form every June with the same ritual as their Canadian return, and they remain nonresidents. No drama, as long as the form goes in on time.

The winter that ran long. A Windsor snowbird stayed 200 days one year after a heart procedure in Florida made travel unwise. Over 183 actual days, Form 8840 was unavailable, so his return took the treaty tie-breaker route with Form 8833, where permanent home and vital interests in Canada carried the position. The unsettled part was his Canadian account reporting, which we handled conservatively rather than relying on a contested court decision. The next two winters were kept short on purpose, because 200 days feeds a third and a sixth into the following years' math.

The planner reading the headlines. A Hamilton retiree read about the Snowbird Visa Act and started sketching an eight-month Florida life. The bill is not law, and the plan had a deeper flaw. Using 240 days would end her closer connection exception and pull her toward US tax residency, worldwide income and account reporting included. She settled on a 120-day rhythm now, with a real analysis on file for whether becoming a US resident on purpose, with planning first, would ever be worth it. That is a decision to make deliberately, never by drift.

Sources of Law

Authorities retrieved August 9, 2026. Thresholds, forms, and pending bills change; confirm current rules before acting.

• IRS, Substantial Presence Test: 31-day and weighted 183-day formula (current year + 1/3 prior year + 1/6 second prior year); part-day presence; commuter and under-24-hour transit exceptions. irs.gov
• IRS, Closer Connection Exception to the Substantial Presence Test: under-183 current-year days, foreign tax home, closer connection, no permanent-residence steps. irs.gov
• Form 8840 (2025) and instructions: filing with Form 1040-NR or standalone to Austin by the 1040-NR due date; consequence of late filing. irs.gov (PDF) · June 15 due date for nonresidents without wages subject to withholding: IRS, Taxation of Nonresident Aliens. irs.gov
• US-Canada tax convention, Art. IV(2): dual-resident tie-breaker (permanent home, center of vital interests, habitual abode, nationality). irs.gov (consolidated treaty PDF) · Claimed on Form 8833 under Treas. Reg. §301.7701(b)-7.
• Rev. Proc. 2014-55: RRSP/RRIF deferral and relief from Forms 3520/3520-A. TFSA and RESP classification remains contested; case-by-case review. FBAR relief for treaty tie-breaker nonresidents is contested: Aroeste v. United States (S.D. Cal. 2023) is persuasive authority only.
• Canadian Snowbird Visa Act: H.R. 3070 and S. 2406, 119th Congress (240 days, age 50+, Canadian residence maintained, US residence owned or rented, no US employment); in committee, not law, as of August 9, 2026. congress.gov H.R. 3070 · congress.gov S. 2406
• B-2 visitor admission for Canadians (visa-exempt, up to 6 months per entry at CBP discretion; I-94 controls): summarized from immigration-bar sources, e.g. Berardi Immigration Law. General information; we are not immigration lawyers.
• USCIS, alien registration requirement (Form G-325R, stays of 30 days or more, reported in force April 11, 2025). uscis.gov. The official page could not be retrieved when this guide was prepared; details verified only through secondary immigration-bar summaries. Confirm current requirements with an immigration lawyer.

Updated on August 9, 2026. Reviewed by Kevin D. Klagge, Esq., Fla. Bar No. 99502. Attorney Kevin Klagge represents families, businesses, and international clients in estate and tax planning, business structuring, and international law, with a focus on Florida legal tools. He litigates estate and business issues in court. This page is general information about US tax law, not legal or tax advice, and does not create an attorney-client relationship. We are not immigration lawyers, and the immigration statements here are general information only; Canadian tax questions belong to your Canadian accountant, with whom we coordinate. Past results do not guarantee a similar outcome.