Canadian Snowbirds: Tax, Health and Border Rules

Three day counts matter for Canadian snowbirds who winter abroad. The IRS Substantial Presence Test makes you a US tax resident once your weighted three-year count reaches 183 days, with at least 31 days in the current year. Your province sets a minimum stay for health coverage, such as 153 days in Ontario. Permanent residents also need 730 days in Canada every 5 years.

What to declare to CBSA

Last verified: November 2026

183 days
The IRS weighted three-year count
153 days
Ontario presence in any 12-month period
$800 CAD
Duty-free goods after 48 hours or more away

When does the IRS treat a snowbird as a US tax resident?

The Internal Revenue Service (IRS) uses the Substantial Presence Test (26 U.S.C. § 7701(b)) to determine whether a foreign national is a US tax resident for a given calendar year. The formula counts your US presence over three years.

Days in the current year × 1
Days in the first preceding year × 1/3
Days in the second preceding year × 1/6

If the total equals or exceeds 183, and you were in the US at least 31 days in the current year, you meet the Substantial Presence Test for the current year.

Even if you meet the test, you may avoid US tax residency by filing IRS Form 8840 (Closer Connection Exception Statement for Aliens) to demonstrate that you have a closer connection to Canada. If you do not file Form 8840 and you meet the Substantial Presence Test, the IRS may treat you as a US tax resident required to file a US return.

How long can you be away before losing provincial health coverage?

Each province administers its own health insurance program, and each has rules about how long a resident can be absent from the province before losing coverage. These rules are based on provincial health legislation and are distinct from federal immigration law.

Absence rules by province
Plan	The rule
Ontario (OHIP)	You must be physically present in Ontario at least 153 days (about 5 months) in any 12-month period. An OHIP-eligible resident can generally be away from Ontario up to 7 months in any 12-month period and keep coverage.
British Columbia (MSP/HIBC)	You must make your home in B.C. and be physically present at least 6 months in a calendar year. For vacation purposes, eligible residents are generally allowed a total absence of up to 7 months in a calendar year.
Alberta (AHCIP)	You must be physically present in Alberta at least 183 days in a 12-month period. Recurring vacation absences of up to 212 days in a 12-month period may keep coverage. You must notify AHCIP before leaving and on return.
Quebec (RAMQ)	A resident who is outside Quebec 183 days or more in a calendar year, not counting stays of 21 consecutive days or less, stops being a resident for that whole calendar year (s.6). A stay outside Quebec of 12 months or less in a calendar year keeps your status if it happens only once every 7 years and you notify the Régie of your absence (s.7, para. 7, subject to s.7.0.1 and 7.1).
Manitoba (MHSP)	You must make your home in Manitoba and be physically present at least 6 months (183 days) in a calendar year. For an extended vacation or travel absence outside Canada you may keep coverage for up to 7 months if you request it in advance.

What can you bring back duty-free?

When you return to Canada from abroad, CBSA applies duty-free personal exemption allowances based on how long you have been away. CBSA’s personal exemptions apply to goods you purchased or acquired abroad.

Personal exemptions by time away
Time away	Exemption	What it covers
Less than 24 hours away	$0	No personal exemption. You must pay duty and tax on all goods brought back, including alcohol and tobacco (above your personal limits).
24 hours to 48 hours	$200 CAD	Up to $200 CAD worth of goods exempt from duty. No alcohol or tobacco included in this exemption. Goods must accompany you.
48 hours or more	$800 CAD	Up to $800 CAD worth of goods exempt. May include up to 1.5L of wine or 1.14L of spirits or 8.5L of beer (per adult 18/19+), and up to 200 cigarettes, 50 cigars, 200g of manufactured tobacco, and 200 tobacco sticks. After 7 days or more, goods other than alcohol and tobacco may follow by mail or courier.

Goods above your personal exemption are subject to customs duty and GST/HST at Canadian rates.

The rule

You must declare all goods acquired abroad to a CBSA officer when you return, even if they are within your exemption.

CBSA, cbsa-asfc.gc.caVerify on cbsa-asfc.gc.ca

How does the Canada-US tax treaty avoid double taxation?

Canada and the United States have a comprehensive tax treaty (the Canada-US Convention with respect to Taxes on Income and on Capital, signed at Washington on September 26, 1980, with amending protocols). It provides mechanisms to avoid double taxation.

Tiebreaker rules (Article IV): If both countries claim you as a tax resident, the treaty provides tiebreaker tests based on permanent home, centre of vital interests, habitual abode, and nationality, in that order.
Foreign tax credits: If you pay US tax, you can generally claim a foreign tax credit on your Canadian return to reduce double taxation on the same income.
RRSP and RRIF treatment: Article XVIII(7) lets a resident elect, subject to the US authority’s rules, to defer US tax on income earned inside an RRSP or RRIF until it is paid out.
State taxes: The treaty covers US federal income taxes (Article II). State income taxes are outside it, and each state sets its own rules.

Do you stay a Canadian tax resident while you winter abroad?

Whether you remain a Canadian tax resident turns on your residential ties to Canada. The CRA’s significant ties are a home available to you (one leased to a third party may not count), a spouse or common-law partner, and dependants.

Secondary ties include personal property, social ties, Canadian bank accounts and credit cards, provincial health insurance and a Canadian driver’s licence.

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What do people ask?

What is a Canadian snowbird?

A Canadian snowbird is a Canadian who spends the winter months in the United States, Mexico or another warm destination and returns home for the rest of the year. No Canadian law prevents it. Three sets of rules still apply: the IRS day count for US tax, your province's presence rule for health coverage, and CBSA's rules on goods you bring back. Our CBSA declaration guide explains what to declare at the border.

How many days can I spend in the US without triggering the Substantial Presence Test?

Staying 121 days or fewer in every calendar year keeps you under the test: 121 + 121/3 + 121/6 = 181.5, below 183. Past years count, so more days in earlier years lower your limit this year. Any part of a day in the US generally counts as a full day, including arrival and departure. The test is set out in 26 U.S.C. 7701(b), and IRS Publication 519 explains the day counting.

Do I need to file a US tax return as a snowbird?

It depends on your situation. Form 8840, which claims a closer connection to Canada, requires fewer than 183 days in the US in the current year, a tax home in Canada all year and no green card application. If you file a US federal return, you attach Form 8840 to it. If you do not have to file one, the IRS says to send Form 8840 on its own by the return's due date. US income, such as rent from a US property or a US pension, may be taxed in the US under the treaty (Articles VI and XVIII), so check with the IRS or a cross-border tax professional. Article IV of the Canada-US tax treaty sets the tiebreaker rules.

How many days can I be outside my province before I lose provincial health coverage?

It depends on your province, and most allow about 6 to 7 months away. Ontario requires 153 days of presence in any 12 months. British Columbia and Manitoba require six months in a calendar year (Manitoba counts it as 183 days), and Alberta 183 days in 12 months, with up to 212 days of vacation absence possible. Quebec requires that you not be outside the province 183 days or more in a calendar year, not counting stays of 21 consecutive days or less. Our healthcare for newcomers guide explains how each provincial plan works.

What is the difference between provincial health residency and CRA tax residency?

They are separate tests, and you can pass one while failing the other. Provincial health residency counts your days in the province and decides whether your health card stays valid. CRA tax residency looks at your residential ties to Canada, such as a home, family, bank accounts, a health card and a driver's licence, and decides whether Canada taxes your worldwide income. CRA Income Tax Folio S5-F1-C1 explains the residency factors in detail.

I am a permanent resident, not a citizen. Can wintering abroad affect my PR status?

Yes, because permanent residents must spend at least 730 days in Canada in every rolling 5-year period, while citizens can stay abroad indefinitely. Some time abroad with a Canadian-citizen spouse or working for a Canadian employer can count. Long winters in the US plus other travel can wear down that cushion, and meeting your province's health rule is a different test. Our residency obligation guide explains how the 730 days are counted.

What can I bring back duty-free when I return to Canada?

After 48 hours or more away, you can bring back up to $800 CAD of goods duty-free, including limited alcohol and tobacco. After 24 to 48 hours, the limit is $200 CAD with no alcohol or tobacco, and under 24 hours there is no exemption. Be ready to show that goods you took with you were bought in Canada. CBSA's free Form BSF407 can record valuables with serial numbers before you leave. Declare everything you acquired abroad. Our CBSA declaration guide explains how to declare at the border.

Part of:Already a permanent resident

Official sources

This page is based on law and policy published by the Government of Canada.

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