How many days can a Canadian spend in Florida without becoming a U.S. tax resident?

Fewer than 183 in a single calendar year is the hard ceiling, but you can fail the IRS Substantial Presence Test at far fewer days because it uses a weighted 3-year average (current year at 100%, prior year at 1/3, two years back at 1/6). Roughly 122 days a year, every year, crosses the 183 weighted-day line. If you're over it but stayed under 183 in the current year and keep a closer connection to Canada, you file Form 8840 to avoid U.S. residency.

Form 8840, the Closer Connection Exception Statement for Aliens, is the IRS form a snowbird files each year to show that even though the 3-year day-count math makes them look like a U.S. resident, their real home, family, and financial life remain in Canada. Filing it on time keeps your worldwide income out of the U.S. tax net. It's due by the U.S. filing deadline (typically June 15 for those with no U.S. wages, but confirm your date).

Does owning a Naples home change my snowbird tax status?

Owning property doesn't by itself make you a U.S. tax resident — the day-count test does. But an owned home is exactly the kind of tie the IRS weighs in a 'closer connection' analysis, so it makes careful day-counting and timely Form 8840 filing more important, not less. Talk to a cross-border CPA before you buy.

Canadian Snowbird Tax: the 183-Day Rule & Form 8840

Trading the Canadian winter for the Naples coastline is a lifestyle upgrade thousands of buyers make every year. But without the right guidance, spending your winters in Southwest Florida can quietly trigger a real financial headache: becoming a U.S. resident for tax purposes — which would put your worldwide income into the U.S. tax system.

The good news: it’s entirely preventable. Here’s exactly how the IRS tracks your time, and the one form that protects you.

This is education, not tax advice. REALTORS® are not tax professionals. Confirm your situation with a CPA who specializes in U.S./Canada cross-border tax before you buy or file.

The trap: the Substantial Presence Test

Most Canadians assume they’re safe as long as they stay under 183 days in a single year. That’s a dangerous half-truth. The IRS uses the Substantial Presence Test (SPT), which looks at a rolling three-year window, not just this year. You’re treated as a U.S. resident if you are present:

at least 31 days in the current year, and
183 weighted days across three years, counted like this:

Year	How days are counted
Current year	100% of days
1 year ago	1/3 of days
2 years ago	1/6 of days

The math in action

Say you spend 130 days (about four months) in your Naples home every winter. Under the limit, right? Watch what the IRS actually adds up for 2026:

2026 (current): 130 days = 130
2025 (÷3): 130 ÷ 3 = 43.3
2024 (÷6): 130 ÷ 6 = 21.6
Total: 194.9 weighted days

Even though you never stayed more than 130 days in any single year, you’ve failed the test — and by default the IRS now views you as a U.S. tax resident.

The solution: Form 8840 (Closer Connection Exception)

If the math puts you over, don’t panic. The IRS provides a lifeline built for snowbirds: Form 8840, the Closer Connection Exception Statement for Aliens. Filing it tells the IRS, in effect: “Yes, the three-year math puts me over — but my real home, my life, and my taxes belong to Canada.”

Two strict conditions to qualify:

You spent fewer than 183 days in the U.S. in the current calendar year. (Cross 183 in a single year and Form 8840 can’t save you.)
You maintain a tax home in Canada and a closer connection to Canada than to the U.S.

Proving your “closer connection”

Form 8840 is essentially a lifestyle questionnaire. The IRS wants to see that you’re a visitor, not a resident, weighing things like:

Where your permanent home is (in Canada, available to you year-round — not on a long-term lease).
Where your family is.
Where your primary bank accounts and investments are held.
Which country issued your driver’s license and passport.
Where you’re registered to vote.
Where your business or employment is.

Best practices for Naples property owners

File proactively, every year your 3-year weighted average exceeds 183 days. It’s due by your U.S. filing deadline.
Count days rigorously. The IRS counts any part of a day in the U.S. as a full day — the day you land at RSW and the day you fly out both count. Keep a travel log.
Talk to a cross-border CPA before you close. Getting your day-counting and estate plan right up front is far cheaper than fixing it later.

Owning a slice of Naples paradise should be a reward, not a tax surprise. For the full picture on buying here from abroad — FIRPTA, financing, holding title, and closing remotely — see our International Buyer’s Guide to Naples Real Estate.

Thinking about a winter home in Naples? Let’s connect and I’ll help you find the right property for your lifestyle — and point you to the cross-border professionals who keep it tax-smart.

Sources & further reading

IRS — Substantial Presence Test (the 31-day plus 183 weighted-day, three-year formula) and About Form 8840, Closer Connection Exception Statement for Aliens.
Related: our International Buyer’s Guide to Naples Real Estate for FIRPTA, financing, and closing from abroad.

General education for Naples property owners, not tax or legal advice. Day-count rules, filing deadlines, and U.S./Canada treaty provisions change and depend on your situation — confirm with a cross-border CPA before you file or buy.

The Canadian Snowbird Tax Trap: the IRS 183-Day Rule & Form 8840