U.S. taxes for Americans in Canada

Canada has the largest population of Americans abroad in any non-Mexico country — more than a million U.S. citizens hold Canadian residency. The U.S.–Canada relationship is the most extensively negotiated in U.S. expat tax: a comprehensive 1980 income tax treaty (amended multiple times since), a totalization agreement, and decades of IRS guidance specific to Canadian residents.

The result: most U.S. tax issues in Canada have a clean, settled answer. But the few that don't (TFSA, RESP) are particularly punishing.

The income tax math

Canadian federal income tax tops out at 33% above C$253,414, plus provincial tax of 4–25% depending on province. Combined top marginal rates:

• Ontario: 53.53%
• BC: 53.50%
• Quebec: 53.31%
• Alberta: 48.00%

The provincial spread matters — Quebec, Ontario, and BC residents face the highest combined rates. For nearly any salaried American in Canada, Canadian tax exceeds U.S. tax on the same income, so:

• Foreign Tax Credit (FTC) zeros out the U.S. tax on Canadian-source earned income.
• FTC carryforward accumulates — useful for any U.S.-source income or future repatriation years.
• Roth IRA contributions remain available because income stays taxable on the U.S. return.

See FEIE vs. Foreign Tax Credit.

RRSP — the treaty winner

The Registered Retirement Savings Plan (RRSP) is the Canadian 401(k) equivalent. U.S.–Canada treaty Article XVIII explicitly covers it:

• Contributions are deductible (or treated as deferred) on your U.S. return, matching Canadian treatment.
• Growth inside the RRSP is tax-deferred for U.S. purposes — even though it would otherwise be U.S.-taxable income.
• Distributions are taxable at retirement, in the U.S. and Canada with FTC offset.

Critical: the U.S. used to require Form 8891 to claim the treaty deferral. As of 2014, the IRS waived that requirement — the treaty deferral is now automatic for U.S. taxpayers with RRSPs. You don't have to file anything special.

PFICs inside an RRSP are also explicitly excluded from PFIC tax treatment by Treasury guidance. Canadian mutual funds inside an RRSP are U.S.-safe. This is unique in the cross-border world.

TFSA — the PFIC trap

The Tax-Free Savings Account (TFSA) is the Canadian Roth-equivalent: contributions are after-tax, growth is tax-free in Canada, withdrawals are tax-free.

The TFSA is not recognized by U.S. treaty. Specifically:

• Growth inside the TFSA is taxable on your U.S. return annually (interest, dividends, capital gains all U.S.-reportable).
• If you hold Canadian mutual funds inside a TFSA, they're PFICs with full U.S. PFIC tax treatment — the TFSA wrapper doesn't help.
• The TFSA itself may need to be reported as a foreign trust — Forms 3520 and 3520-A, with substantial penalties for non-filing.

For Americans in Canada, the TFSA is mostly a tax disaster. Practical advice:

• Don't open a TFSA if you're a U.S. citizen.
• If you already have one, talk to a credentialed cross-border preparer about cleanup and whether to close it.
• The Canadian tax-free benefit is real for Canadians; it's negative-value for Americans.

RESP — another trust trap

The Registered Education Savings Plan (RESP) is for children's post-secondary education. Similar to TFSA, it's not recognized by U.S. treaty:

• U.S.-taxable on growth inside.
• May be a reportable foreign trust (3520 / 3520-A).
• Investments inside may be PFICs.

Most cross-border practitioners advise Americans in Canada to skip the RESP for their kids and use other vehicles (a U.S.-side 529 plan if the child is a U.S. citizen, or a taxable account).

Social Security and CPP

Both U.S. Social Security and Canada Pension Plan (CPP) are covered by the U.S.–Canada totalization agreement:

• Working in Canada at a Canadian employer: you pay CPP, you owe no U.S. FICA.
• Self-employed in Canada: you pay CPP contributions on self-employment earnings; you owe no U.S. SE tax. Apply for the Canadian Certificate of Coverage (CPT56) from CRA.
• Retiring with credit in both systems: aggregated for eligibility, partial benefits from each based on actual contributions.

When you retire and receive U.S. Social Security in Canada, U.S.–Canada treaty Article XVIII(5) taxes it only in Canada — with a 15% portion excluded from Canadian tax (treating that portion as similar to the QPP exemption). Net: SS is Canada-taxable and a U.S. tax credit recovers the U.S. side via FTC.

See totalization agreements.

CRA's T1135 vs. U.S. FBAR

Canada has its own foreign-asset reporting form: T1135. It's similar to but separate from FBAR and Form 8938.

• T1135 threshold: C$100,000 in specified foreign property at any point.
• Filed with the Canadian tax return.
• Includes U.S. brokerage and bank accounts held by Canadian residents.

As a U.S.-citizen Canadian resident, you potentially file:

• U.S. FBAR (FinCEN 114) for your Canadian financial accounts (over US$10K).
• U.S. Form 8938 for foreign assets (over the FATCA thresholds).
• Canadian T1135 for your U.S. financial accounts (over CAD$100K).

Three different forms, three different thresholds, three different definitions of "foreign." Welcome to cross-border life.

Capital gains

Canada taxes capital gains at 50% inclusion — only half the gain is taxable, at ordinary rates. Effective top rate on the included half is ~27% combined federal/provincial.

For U.S. purposes:

• Long-term capital gains 0%/15%/20% + 3.8% NIIT.
• FTC in passive basket offsets U.S. tax on Canadian-sourced gains.

For most Canadian-resident Americans, the FTC fully offsets U.S. capital gains tax. NIIT, as always, is not creditable against Canadian tax — remains a residual U.S. tax bill above MAGI thresholds.

U.S. retirement accounts in Canada

• Roth IRA: recognized by treaty. Distributions are tax-free in both countries, provided you make a one-time election with the CRA to defer Canadian tax on the Roth balance.
• Traditional IRA / 401(k): distributions are taxable in Canada and the U.S., with FTC offset. The treaty handles this cleanly.
• Required Minimum Distributions apply per U.S. rules regardless of Canadian residence.

State residency

The Canadian visa/work-permit system documents foreign residence well. For most U.S. departers from non-sticky states, the move is clean. Sticky states (CA, NY, NM, VA, SC) still require affirmative severance steps — see state residency when abroad.

Common Americans-in-Canada mistakes

• Opening a TFSA without realizing the U.S. treatment makes it useless or harmful.
• Opening an RESP for U.S.-citizen kids — same problem.
• Buying Canadian mutual funds in a taxable account. PFIC trap. Use the RRSP wrapper or U.S.-domiciled funds via a U.S. broker.
• Not filing 3520 / 3520-A for TFSA/RESP held as foreign trusts.
• Forgetting the totalization Certificate of Coverage for self-employment work.
• Missing T1135 on the Canadian side for U.S. brokerage accounts.
• Treating an old expired green card as ending tax residency — see green-card holder living abroad.

Next steps

• FEIE vs. Foreign Tax Credit
• Foreign Tax Credit (Form 1116)
• The PFIC trap
• Totalization agreements
• Retiring abroad: tax checklist