PFICs Inside a TFSA or ISA: What Advisers to US Persons Should Check
Published by 
Steffan Kharmaaiarvi, founder
The local default for a client in Toronto or London is to fill the TFSA or ISA first, and to fill it with a Canadian-listed ETF or an Irish UCITS fund. For a US person that combination is the PFIC problem in its least forgiving form: the account is tax-free at home, the funds are likely PFICs in the US, and the US does not recognise the wrapper. This note is about a PFIC in a TFSA or ISA specifically — why the wrapper does not help and what to check. The general PFIC rules are in PFIC screening for US clients abroad. It is decision support, not tax advice.
Why the wrapper does not change the PFIC answer
- No treaty status. Neither the UK–US nor the Canada–US treaty recognises an ISA or a TFSA, so income in them is generally taxable for a US person as it arises (see which foreign accounts the US recognises).
- No PFIC exception. The Form 8621 instructions say a person owning PFIC stock through certain US arrangements, such as a section 401(a) plan or another account exempt under section 501(a), a 403(b) or 457(b) plan, an individual retirement plan, or a 529, 530 or 529A programme, is not treated as a shareholder (IRS Instructions for Form 8621). A foreign savings account is not on that list. The pension exception requires an arrangement treated as a foreign pension fund under a treaty, whose income is taxed to the member only when paid out (Treas. Reg. §1.1298-1(c)(4)). An RRSP under Article XVIII(7) can fit that description; a TFSA or an ISA does not.
- Nothing to credit. The US credit is for foreign income taxes paid or accrued (IRC §901(b)(1)). Inside a TFSA or ISA no Canadian or UK tax is paid on the gains (CRA, gov.uk), so any US tax on them is the whole cost.
What the wrapper makes worse
- Selling to tidy up is a US event. A sale or switch inside the TFSA or ISA is tax-free locally, but for a US person it is a disposition of PFIC stock. Without an election, the default excess-distribution regime applies to the gain.
- Mark-to-market income without cash. If the client elects mark-to-market, each year's rise in value over adjusted basis is included in income and treated as ordinary income (IRC §1296(a), (c)(1)). The cash stays inside the wrapper; the tax is paid from outside it. The election is available only for marketable stock, stock regularly traded on a national securities exchange registered with the SEC, or on another market the Treasury determines has adequate rules (§1296(e)(1)).
- QEF depends on the fund. A qualified electing fund election needs the PFIC to provide an annual information statement (Form 8621 instructions), which many local funds do not.
What to check
- US status. Citizenship, a green card, or birth in the US; the account's country is irrelevant.
- Every fund in every wrapper. Funds domiciled outside the US (Canadian ETFs and mutual funds, Irish and Luxembourg UCITS, UK OEICs) are likely PFICs; directly held company shares rarely are.
- The USD 25,000 exception. No Form 8621 is needed where the value of all PFIC stock owned directly or indirectly is USD 25,000 or less on the last day of the year (USD 50,000 combined on a joint return), with no excess distribution or gain under section 1291 in the year and no QEF election (§1.1298-1(c)(2), instructions). The test counts PFICs inside and outside wrappers together.
- Election history. Which elections were made, and when, decides how a sale is taxed. Ask for prior Forms 8621 before proposing a switch.
- The account's legal form. A TFSA can be a deposit, an annuity contract or an arrangement in trust (CRA IC18-1, ¶6); whether that raises a foreign-trust question is for the US preparer.
- Reporting outside Form 8621. Wrapped accounts count for the FBAR and Form 8938 like any other foreign account; see FBAR and Form 8938 thresholds.
A worked example
Illustrative figures in US dollars. A US citizen in Toronto holds two Canadian-listed ETFs in a TFSA and nothing else that could be a PFIC:
| Holding (TFSA) | Adjusted basis | Value 31 Dec | Screen |
|---|---|---|---|
| Canadian all-in-one equity ETF | 50,000 | 58,000 | Likely PFIC |
| Canadian bond ETF | 12,500 | 12,000 | Likely PFIC |
The PFIC stock totals USD 70,000 at year end, above USD 25,000, so the exception does not apply: two Forms 8621 are likely. Suppose a mark-to-market election was made on the equity ETF in the year it was bought and this is its first year: USD 58,000 less USD 50,000 = USD 8,000 of ordinary income in the US. Canadian tax on it: none, because it is in a TFSA. Foreign tax to credit: none. With no election on the bond ETF and no distribution above the excess-distribution threshold, there is no current inclusion for it, but a later sale falls under the default regime. The same holdings in an RRSP would sit within the treaty-pension exception.
For a UK client the shape is the same with an Irish UCITS tracker in a Stocks and Shares ISA. In either country the outcome turns on the elections, the fund list and the client's other US income, which is why the screen comes first and the computation belongs to the US preparer.
What Borderfolio shows
For a client marked as a US person:
- Possible PFIC holdings. The screen runs over every account the client holds, wrapped or not: funds domiciled outside the US (from the ISIN and instrument type) are listed as likely PFICs, with the count of likely Forms 8621 and their share of the portfolio. Holdings that cannot be classified are listed apart.
- Foreign tax wrappers. A separate finding names the ISA or TFSA accounts as not tax-free in the US, and the RRSP or SIPP as treaty-deferred pensions.
- Accounts abroad. The FBAR and Form 8938 screen counts the wrapped accounts with the rest.
Not modelled: no PFIC tax, mark-to-market inclusion or excess-distribution charge is computed; elections and the Form 8621 exceptions are not applied; the PFIC list is client-wide and does not split by account; whether a TFSA is a foreign trust is not assessed; and no form is prepared. See it in Borderfolio for US persons abroad.
Not tax advice. This article is general information for professional advisers, written from the sources linked in it as read on 3 November 2026. It does not compute anyone's tax; the client's US and local tax preparers apply the rules to the facts.
Frequently asked questions
Does holding a Canadian ETF in a TFSA avoid the PFIC rules?
No. The US does not recognise a TFSA, and the PFIC exceptions cover certain US arrangements and treaty foreign pension funds, not a foreign savings account. A Canadian ETF in a TFSA generally remains PFIC stock of the US person, with the usual Form 8621 questions.
Is a PFIC in an RRSP treated differently?
Yes. No Form 8621 is required for PFIC stock held through an arrangement treated as a foreign pension fund under a treaty, where its income is taxed only when paid out. An RRSP within Article XVIII(7) of the Canada–US treaty fits that description; a TFSA does not.
Does the USD 25,000 Form 8621 exception apply per account?
No. It looks at the value of all PFIC stock the shareholder owns directly or indirectly on the last day of the year, inside and outside wrappers, and it is lost in a year with an excess distribution or a gain under section 1291, or with a QEF election.