Form 8843 Explained: Canadian Students and Exempt Days
How students, teachers, and trainees exclude days from the residency count — and the deadline
Reviewed by the Fairlight Accounting cross-border tax team — U.S. & Canadian Tax Desks
Form 8843 is the statement an exempt individual — a student on F-1 or J-1 status, a teacher or trainee, or someone kept in the United States by a medical condition — files to exclude days from the substantial presence test. It's required even with no U.S. income, usually by June 15, and keeps the person a nonresident.
On this page
Who files
| Category | Days excluded |
|---|---|
| Students (F, J, M, Q visas) | Days in up to five calendar years (any part of a year counts, including years as a teacher or trainee); later years only if the student shows no intent to reside permanently in the U.S. |
| Teachers and trainees (J, Q visas) | Days in the year, unless exempt as a teacher, trainee, or student in any part of 2 of the 6 prior calendar years (limited foreign-employer exception) |
| Professional athletes at charitable events | Days actually competing in the charitable sports event |
| Medical condition | Days unable to leave because of a condition that arose in the U.S. |
Why it matters for Canadians
A Canadian studying at a U.S. university for four years would otherwise meet the substantial presence test by the second year and become a U.S. tax resident — taxable on worldwide income and subject to FBAR on Canadian accounts. Form 8843 keeps them a nonresident; they file Form 1040-NR only if they have U.S. income (a campus job, or the taxable part of a U.S. scholarship — amounts for room, board, and travel; for a degree candidate, amounts for tuition, required fees, books, supplies, and equipment are tax-free under section 117).
Deadline and the Canadian side
Attached to Form 1040-NR when one is filed — due April 15 if the student had wages subject to withholding, otherwise June 15 (for 2026, April 15 or June 15, 2027) — or, with no return required, mailed on its own to the IRS in Austin, Texas, by the Form 1040-NR due date, usually June 15. The student usually remains a Canadian resident (factual residency with ties to Canada), filing a Canadian return with tuition credits and claiming credit for any U.S. tax.
Frequently asked questions
Do Canadian students in the U.S. need to file Form 8843?
Yes, each year as an exempt individual, even with no U.S. income.
How long can a student exclude days?
Generally the first five calendar years present as a student.
What if I didn't file Form 8843?
File it as soon as possible. Under Reg. 301.7701(b)-8(d) and the form's instructions, a late form costs professional athletes and medical-condition filers the exclusion unless they show, by clear and convincing evidence, reasonable steps to learn of and comply with the requirement; that forfeiture rule doesn't list students, teachers, and trainees, though IRS web guidance applies the same standard to them.
Do I also need a U.S. return?
Only if you had U.S. income, such as wages from a campus job.
Official sources
The IRS explains: “If you are an alien individual, file Form 8843 to explain the basis of your claim that you can exclude days present in the United States for purposes of the substantial presence test because you: Were an exempt individual. Were unable to leave the United States because of a medical condition or medical problem.” — Internal Revenue Service, About Form 8843, Statement for Exempt Individuals and Individuals with a Medical Condition, https://www.irs.gov/forms-pubs/about-form-8843
The IRS explains: “To meet this test, you must be physically present in the United States (U.S.) on at least: 31 days during the current year, and 183 days during the 3-year period that includes the current year and the 2 years immediately before that” — Internal Revenue Service, Substantial presence test, https://www.irs.gov/individuals/international-taxpayers/substantial-presence-test
Next step
Fairlight Accounting is a cross-border accounting and tax practice with a U.S. Tax Desk and a Canadian Tax Desk. Our U.S. Tax Desk and Canadian Tax Desk handle Form 8843 filings, nonresident student returns, and residency planning for Canadian students and trainees in the United States. See pricing or book a call.
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