TFSA and Roth IRA: Look-Alike Accounts That Each Country Refuses to Recognize From the Other

The two accounts were built for the same purpose and are treated as strangers across the border, asymmetrically: the Roth IRA has a treaty provision protecting it in Canada; the TFSA has nothing protecting it in the US. The Roth IRA in Canada: the treaty's pension article defines pensions to include Roth IRAs, and paragraph 7 allows a Canadian resident who holds a Roth IRA to elect to defer Canadian tax on the income accrued in the plan — with the practical effect that a Roth IRA's growth is not taxed in Canada while the election stands, and distributions (which are tax-free in the US for qualified withdrawals) are treated in Canada under the pension article such that the amounts that would have been excluded from US income are also excluded from Canadian income; the election is filed once with the Canadian return for the first year of residence (a letter to the CRA identifying the plan, its balance, and the election), it must be made on time (the CRA accepts late elections in some circumstances but the position is weaker), and it has one poison pill: a "Canadian contribution" — any contribution to the Roth IRA made while a Canadian resident — terminates the treaty protection for the portion attributable to the contribution and its growth, converting that slice into an ordinary taxable account for Canadian purposes with the tracking burden that implies. The rule is therefore simple for the American who moves to Canada: file the election with the first return, never contribute to the Roth again while resident in Canada, and the Roth IRA stays tax-free in both countries — while conversions from a traditional IRA to a Roth after becoming a Canadian resident are Canadian contributions too, taxable in Canada as pension income and tainting the election (the Roth-conversion guide covers why conversions belong before the move). The TFSA in the United States: no treaty provision covers it — the TFSA is not a pension under the treaty's definition — so a US person (a US citizen living in Canada, or a Canadian who moved to the US) holding a TFSA has a taxable account for US purposes: every year's interest, dividends, and capital gains inside the TFSA are reportable on the 1040 at the holdings' character, converted at the year's rates, with no US tax credit because Canada charges no tax on the account; Canadian mutual funds and ETFs inside it are PFICs requiring Form 8621 (the PFIC guides' territory); and the account appears on the FBAR and Form 8938. The trust question the TFSA carries — whether a TFSA structured as a trust requires Forms 3520 and 3520-A — is addressed by the IRS's 2020 exemption for tax-favored foreign non-retirement savings trusts, which many practitioners read as covering the TFSA, with a documented position taken either way (the 3520-A guide covers the mechanics). The mover's decisions follow from the asymmetry. The Canadian moving to the US with a TFSA: the account's Canadian tax-free status becomes irrelevant (the US taxes the growth annually), contribution room stops accruing for non-resident years and contributions while non-resident attract a 1% monthly penalty tax in Canada, and the account is usually collapsed before or shortly after the move — withdrawn tax-free in Canada (no Canadian tax, ever), the proceeds redeployed into US accounts (a Roth IRA, once US earned income exists), and the annual US reporting avoided; the case for keeping it is a Canadian who expects to return soon (the room is restored the January after withdrawal, so even the returnee usually collapses and re-contributes later). The American moving to Canada with a Roth IRA: keep it, file the election, never contribute, and let it grow tax-free in both systems — the one account in the corridor that works better after the move than most; convert to Roth before the move if a conversion is planned at all. The American living in Canada considering a TFSA: generally don't — the Canadian tax-free status buys nothing against annual US taxation and PFIC exposure; the RRSP (with its US deferral) or a taxable account holding US-listed securities serves better, as the accounts guide for Americans in Canada explains. The estate footnote: a Roth IRA held by a Canadian resident passes under US beneficiary-designation rules with Canadian tax on the deemed disposition at death governed by the pension article's treatment; a TFSA held by a US person passes tax-free in Canada and as an ordinary account for US estate purposes — small at the scale of most accounts, but the Roth's treaty protection extends to the beneficiary's treatment in ways the TFSA's Canadian exemption does not.

Key takeaways

• Asymmetry is the whole story: the treaty protects the Roth IRA in Canada by election; nothing protects the TFSA in the US — it is a taxable account with PFIC and reporting consequences.
• Roth IRA in Canada: file the Article XVIII(7) election with the first Canadian return, never contribute (including conversions) while resident — a Canadian contribution taints the protection for that slice permanently.
• TFSA in the US: annual US taxation of all income and gains at their character, Form 8621 for any Canadian funds, FBAR and 8938 reporting, and a documented position on the trust forms.
• Canadian moving south: collapse the TFSA (tax-free in Canada, room restored the following January) and redeploy into US accounts — non-resident contributions attract Canada's 1% monthly penalty anyway.
• American moving north: keep the Roth, elect, freeze contributions; do any conversion before the move.
• American in Canada: skip the TFSA — the RRSP's US deferral or a taxable account of US-listed securities does the job without the annual US bill.

The two-account move protocol

Roth IRA holder moving to Canada: election letter drafted for the first Canadian return (plan, custodian, balance at arrival, the election); contributions and conversions stopped before residency begins; the account frozen except for investment changes. TFSA holder moving to the US: withdrawal before the move where practical (no Canadian tax; the room returns next January); if kept for any reason, the US reporting stack (income at character, 8621s, FBAR, 8938, trust position) budgeted annually and the account emptied of Canadian funds. Both: the estate designation reviewed against the new country's rules. One page per account; the decisions are the easy part, the election deadline and the contribution freeze are what people miss.

Worked example

Two movers, opposite directions. Mover one: a Seattle software engineer relocating to Vancouver with a US$180,000 Roth IRA. Pre-move: a planned traditional-to-Roth conversion is executed in his last US-resident year (taxed by the US, nothing in Canada). First Canadian return: the Article XVIII(7) election letter is filed identifying the Roth IRA and its arrival balance. Go-forward: no contributions, no conversions, no Canadian tax on the growth, tax-free qualified withdrawals in retirement in both countries — the account works exactly as designed, in a country that didn't design it. His colleague's version: same account, no election filed, a US$7,000 contribution made from Vancouver in year two on autopilot — the Canadian tax on the growth becomes an annual item, the contribution slice is permanently tainted, and the late-election letter to the CRA is a weaker position than the timely one would have been. Mover two: a Calgary nurse relocating to Phoenix with a C$95,000 TFSA in two Canadian equity ETFs. Pre-move: the TFSA is withdrawn in full (no Canadian tax), the room noted for a possible return (restored the following January), the cash redeployed after the move into a Roth IRA (once she has US earned income) and a taxable US brokerage account. What she avoided: annual US tax on the TFSA's dividends and gains, two Form 8621s a year for the Canadian ETFs, FBAR and 8938 entries, the trust-form position, and Canada's 1% monthly penalty on any contribution she made from Arizona by habit. Two accounts built for the same purpose, and the right move for each was the opposite of the other.

Official sources

The CRA explains the tax-free savings account rules, including that contribution room accumulates only for years in which an individual is at least 18 and resident in Canada, that income earned in the account and withdrawals are not taxed in Canada, and that contributions made while non-resident attract a special tax. — Canada Revenue Agency, The Tax-Free Savings Account, https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/tax-free-savings-account.html

Contributions to a traditional or Roth IRA require "taxable compensation," and compensation does not include "any amounts (other than combat pay) you exclude from income, such as foreign earned income and housing costs." — Internal Revenue Service, Publication 590-A, Contributions to Individual Retirement Arrangements, https://www.irs.gov/publications/p590a

Practitioner note

The TFSA and Roth IRA are the corridor's clearest lesson that identical designs get opposite treatment: the treaty election makes a Roth IRA work beautifully in Canada if filed on time and never contaminated by a Canadian contribution, while the TFSA is a taxable, PFIC-laden reporting burden in the US that Canadians moving south should simply empty. Our move protocol is one page per account — election letter and contribution freeze for the Roth, pre-move withdrawal and redeployment for the TFSA — and the failures we repair are always the missed election and the autopilot contribution.

See also: For how the RRSP and the 401(k) compare across the border, see how the RRSP and the 401(k) compare across the border; and browse every cross-border tax topic guide, organized by situation.

Next step

Fairlight prepares the tax-free-account move protocol — the Article XVIII(7) election for Roth IRAs with contribution and conversion freezes, TFSA withdrawal and redeployment or the full US reporting stack where kept, and account guidance for Americans resident in Canada. See cross-border pricing or book a call.