A Canadian resident lives in Windsor, works for a Michigan employer, spends three days each week at the U.S. office and two days working from home in Canada, and receives stock compensation. Residency, workday sourcing, payroll, state and provincial filing, equity allocation, foreign tax credits, and treaty provisions may all be relevant.
1. Where are you tax resident?
Residency is not the same as employer location, citizenship, or where a bank account is held. Review residential ties, days of presence, the green-card or substantial-presence tests where relevant, and any treaty residency position.
2. Where is the employment physically exercised?
For cross-border employment income, the location where services are physically performed can be central. A remote day at home and a day in the employer’s office may not be sourced the same way, even when one employer pays the entire salary.
3. Is payroll withholding aligned with the work pattern?
Employer payroll may need to reflect the employee’s work location, residency, and applicable federal, state, provincial, social-security, or treaty rules. A year-end tax return does not always cure an employer compliance issue.
4. Does the Canada-U.S. treaty change the result?
The treaty includes residency, employment-income, relief-from-double-taxation, social-security, and other provisions. Treaty exceptions have detailed conditions, so a headline threshold or commuter label should not be applied without the full facts.
5. Which returns may be needed?
A Canadian federal and provincial return, U.S. federal nonresident or resident return, state return, or other filings may be required depending on residency, work location, income, withholding, and treaty claims. The number of border crossings alone does not determine the answer.
6. How is double taxation relieved?
Foreign tax credits and treaty rules often coordinate tax paid to both countries, but the ordering, source characterization, limitations, and timing matter. Paying withholding in both places does not guarantee the final credit calculation will match automatically.
Records to maintain throughout the year
- Daily work location and travel log
- Entry and exit records
- Employment agreement and remote-work policy
- Pay statements and tax slips
- Bonus and equity-compensation earning periods
- Federal, state, and provincial tax paid
- Housing and family-residency facts