H-1B and L-1 Visa: Tax Rules for Canadians in Their First US Year

Canadians who move to the US on an H-1B (specialty occupation) or L-1 (intracompany transferee) visa face the same first-year tax transition as TN visa holders, but with a few differences in timing and employer structure. The core question is the same: in the year you arrive, are you a US tax resident for the full year or only part of it, and how does that affect your filing in both countries? The answer depends on whether you elect full-year treatment or file a dual-status return, and the choice has consequences for deductions, credits, and what happens on the Canadian side.

When does US tax residency start?

US tax residency for visa holders is determined by the substantial presence test under IRC 7701(b). The test uses a weighted formula counting days present in the US over three years. In the first year of arrival, a Canadian on an H-1B or L-1 who was not previously present in the US (or present for fewer than 31 days) becomes a US resident on the first day of presence that qualifies under the “first year of residency” rules.

The practical result: if you arrive on August 1 and are present for the rest of the year (153 days), you meet the substantial presence test for that year (153 days exceeds 183), and your residency start date is August 1. If you do not meet the 183-day threshold in the arrival year, you may still become a resident under the “first year of residency” election if you are present for at least 31 consecutive days and 75% of the days from the start of that 31-day period through year-end.

H-1B vs TN vs L-1 differences in timing: The visa type does not change the residency test. All three visa categories (H-1B, L-1, TN) use the same substantial presence test. The differences are practical: H-1B holders often arrive later in the year (October 1 is the standard H-1B start date for cap-subject petitions), which compresses the first-year filing. L-1 holders often arrive earlier because L-1 transfers are not subject to the H-1B cap and can be processed year-round.

Dual-status return vs full-year election?

In the arrival year, you have two choices:

Option 1: Dual-status return (default). You file as a non-resident alien for the portion of the year before your residency start date and as a resident alien for the portion after. The practical consequences:

• No standard deduction (dual-status filers cannot claim it)
• No filing jointly with your spouse (married filing separately is required)
• Only US-source income is taxed for the NRA portion; worldwide income is taxed for the resident portion
• You can still itemize deductions for the resident portion

Option 2: Full-year election under IRC 7701(b)(4). You elect to be treated as a US resident for the entire calendar year. The practical consequences:

• You can file jointly with your spouse (if your spouse makes the IRC 6013(g) election to be treated as a US resident)
• You get the standard deduction
• Your worldwide income for the entire year is subject to US tax, including Canadian income earned before the move
• You must report all foreign accounts and assets for the full year (FBAR, Form 8938)

The dual-status vs full-year analysis is the same regardless of visa type. The full-year election usually saves money when the combined standard deduction and joint filing rates outweigh the additional US tax on pre-move Canadian income (which is offset by the FTC for Canadian tax paid).

What happens on the Canadian side?

Canada taxes residents on worldwide income. When you leave Canada, you file a departure return reporting worldwide income up to the date of departure and Canadian-source income for the remainder of the year. The key Canadian-side events:

Departure tax. Canada deems you to have disposed of most capital property at fair market value on the date you leave (ITA 128.1(4)). Exempt property includes Canadian real property, RRSP/RRIF/TFSA accounts, and employer stock options. The departure tax guide covers the mechanics.

Residency end date. The CRA determines when you stopped being a Canadian resident based on the date you severed residential ties (sold or rented your home, moved your family, cancelled provincial health insurance). This date may be different from your US residency start date, and the gap (or overlap) between the two dates can create a period where both countries claim you as a resident. The treaty tiebreaker resolves the overlap by assigning residency to one country based on the Article IV hierarchy.

RRSP/TFSA. Your RRSP stays in Canada and is sheltered from US tax under the treaty (Article XVIII). Your TFSA becomes a foreign trust problem the moment you become a US resident. Most advisors recommend collapsing the TFSA before the move.

What about employer withholding?

Your US employer withholds federal income tax, state income tax (if applicable), Social Security (FICA), and Medicare from your paycheck starting on your first day of US employment. The withholding is based on your W-4 and does not depend on your visa type.

H-1B specific: H-1B holders are not exempt from FICA (unlike F-1 and J-1 visa holders in their first years). Social Security and Medicare taxes are withheld from day one. If you have already been paying into CPP in Canada, the totalization agreement does not exempt you from US FICA (it applies to self-employed individuals and to employees whose employer sends them temporarily to the other country, not to new hires by a US employer).

L-1 specific: L-1 transfers are intracompany, meaning the same employer (or a related entity) employs you in both countries. This can create complications with stock compensation (RSUs, options) that were granted while you were in Canada but vest after the move. The RSU cross-border guide covers the allocation rules.

State taxes: Your state of residence taxes your worldwide income (for states with an income tax). If you live in a state with no income tax (Florida, Texas, Washington, Nevada, etc.), you avoid this layer. If you live in a state like California or New York, the state tax adds 5-13% on top of federal rates. The Canadian departure return does not interact with US state taxes.

What are the common first-year mistakes?

Collapsing the TFSA too late. If you become a US resident while you still hold a TFSA, the US treats it as a foreign grantor trust. You may owe US tax on the annual growth and face Form 3520/3520-A filing obligations. Collapse it before the move.

Missing the FBAR in the arrival year. From the date you become a US resident, your Canadian accounts become “foreign” accounts subject to FBAR reporting. If the aggregate exceeds $10,000 at any point during the year, you file.

Filing only one country’s return. In the arrival year, you owe returns to both countries. The Canadian departure return and the US return (dual-status or full-year) must be filed, and the FTC on each must reference the other country’s tax. Filing one without the other produces incorrect credits.

Using the wrong exchange rate. The US return uses the IRS annual average rate or spot rates for income and deductions. The Canadian return uses Bank of Canada rates. The FBAR uses the Treasury rate. Three different rates for three different filings.

Not adjusting the W-4. The default W-4 withholding may over-withhold or under-withhold if you have significant Canadian income or foreign tax credits. Run a projection after the first few paychecks and adjust.

What should I do next?

If you are arriving on an H-1B or L-1, run the dual-status vs full-year comparison before the year ends, because the full-year election is made on the return and cannot be undone. Collapse the TFSA before the move. Set up FBAR filing for the arrival year.

• TN visa first-year taxes, the same analysis for the most common Canadian work visa
• Dual-status vs full-year election, the detailed comparison
• Departure tax when leaving Canada, what happens to your assets on exit
• RRSP and TFSA after moving to the US, what to keep and what to collapse
• Totalization agreement, combining CPP and Social Security credits

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.