The PFIC Series — Post 2 of 6
This article is general educational information about US tax filing obligations. It is not tax, legal, or investment advice. Form 8621 thresholds, deadlines and election conditions are technical and change over time; verify all figures against the current IRS instructions and confirm your situation with a cross-border advisor qualified in both countries before filing.
By Lucas Wennersten, CFP® (US & Canada), CFA · 7-minute read
Part of PFIC Rules for US Persons in Canada — the complete guide.
If you are an American living in Canada and you own a Canadian mutual fund or a Canadian-listed ETF, there is a good chance the IRS expects you to file Form 8621 — the information return for shareholders of a passive foreign investment company. It is one of the most overlooked forms in cross-border tax, and one of the most expensive to get wrong.
Form 8621 is the paperwork that sits on top of the PFIC rules. Where our companion guide explains what a PFIC actually is and why most Canadian funds qualify, this article answers the practical question that follows: who has to file, when, and what happens if they don’t.
Who must file Form 8621?
In general, a US person — a US citizen, a green card holder, or anyone treated as a US tax resident — must file Form 8621 if they directly or indirectly own shares of a PFIC and a reporting trigger applies. For most cross-border clients, the PFIC is a pooled Canadian investment held in a non-registered account.
The most common triggers to file include:
- You received a distribution from a PFIC during the year, or you sold or otherwise disposed of PFIC shares.
- You are making an election — most often a Qualified Electing Fund or mark-to-market election — or reporting income under an election already in place.
- You simply own PFIC shares above the reporting threshold, even with no distribution or sale.
A separate Form 8621 is generally required for each PFIC you hold. A US person with a handful of Canadian funds can therefore face a stack of forms each year — one reason PFIC exposure is as much an administrative burden as a tax one.
Is there a threshold below which I don’t file?
Yes, but it is narrow. Under a de minimis exception, a US person generally does not have to file Form 8621 purely for owning PFIC shares where the total value of all PFIC stock they own at year end is modest, and they have no excess distribution, no disposition, and make no election that year. A separate and lower per-PFIC figure can apply to certain indirectly held PFICs.
We have deliberately not printed the dollar figures here. They are set by regulation, they differ by filing status, and they are exactly the kind of number that ages badly on a web page. Check the current amounts in the instructions to Form 8621 before relying on them.
Two cautions matter beyond the numbers. First, the exception only removes the reporting obligation in that year; it does not switch off the underlying PFIC tax rules. Second, the conditions are cumulative — fail any one of them and the exception is gone.
The trap most people miss: you can be below the filing threshold one year and over it the next as your portfolio grows. PFIC exposure is not a one-time question — it has to be re-checked every tax year, fund by fund.
How do the QEF and mark-to-market elections change the form?
Form 8621 is also where you make and maintain the two elections that can rescue you from the punitive default treatment:
- A QEF election under IRC §1295 taxes you each year on your share of the fund’s ordinary earnings and net capital gain, preserving capital-gains character — but it only works if the fund gives you a PFIC Annual Information Statement, which many Canadian funds do not.
- A mark-to-market election under IRC §1296 taxes the annual increase in the fund’s market value as ordinary income, with losses allowed only to the extent of prior marked gains.
Both elections must be made affirmatively and on time, generally on a timely filed Form 8621 for the first year you want them to apply. Miss the election and you fall into the default regime under IRC §1291. We compare the three approaches in PFIC elections: QEF vs mark-to-market vs the default regime.
What is the deadline, and how is the form filed?
Unlike the FBAR, which is filed separately with FinCEN, Form 8621 is attached to your US income tax return and is due by the return’s due date, including extensions. It covers the same tax year as the return it accompanies. The form itself, and any election on it, must be complete and correct when the return is filed.
That distinction matters more than it sounds. Because the FBAR goes to a different agency on a different system, people who correctly file one often assume the other is handled. The two obligations are independent, as we set out in FBAR Canada: what US persons must report.
What happens if I don’t file Form 8621?
There is no fixed dollar penalty stated on the form, but the consequences are still serious. The most important is a statute-of-limitations rule: under IRC §6501(c)(8), failing to file a required information return can keep the entire tax return open to IRS examination — not just the PFIC items — until the missing form is filed.
Read that carefully, because it is the part that surprises people. A missing Form 8621 does not simply expose the fund. It can hold the whole year open indefinitely, long after the normal limitations period would have closed it.
On top of that, non-filers are typically stuck in the default Section 1291 regime, because the favourable elections were never made on time. US persons who discover years of unfiled forms are often able to correct the position through established IRS compliance procedures, sometimes alongside late-election relief. That is fact-specific and best handled with a cross-border tax professional.
What this means for cross-border clients
If you are a US person in Canada, the message is practical: Form 8621 is not optional once a PFIC is in the picture, and the funds you hold determine whether it lands on your desk.
Before the next filing season, take stock of what is sitting in your non-registered and TFSA accounts, check each holding’s PFIC status, and decide — deliberately, not by default — whether an election makes sense.
Funds inside an RRSP or RRIF are generally spared PFIC reporting under the Canada-US treaty. That relief does not extend to TFSAs, and RESPs sit differently again — in both, PFIC exposure persists, as we cover in PFICs inside TFSAs and RESPs. For the wider picture, see US retirement accounts in Canada. Because the fix touches both the tax analysis and how the portfolio is built, coordinate it with an advisor licensed on both sides of the border.
Frequently asked questions
Who has to file Form 8621?
Generally a US person who directly or indirectly owns PFIC shares and meets a trigger — a distribution, a disposition, an election, or owning shares above the threshold. For Americans in Canada this usually means Canadian mutual funds or ETFs in a taxable account, with a separate form for each PFIC.
Is there a minimum below which I don’t file?
A limited de minimis exception can apply where total PFIC value is modest and you have no distribution, disposition or election that year. The dollar figures are set by regulation and differ by filing status, so check the current Form 8621 instructions rather than relying on a figure quoted elsewhere. The exception removes the reporting step, not the underlying PFIC tax.
When is Form 8621 due?
It is attached to your US income tax return and due with that return, including extensions. It is not a separate filing like the FBAR, which goes to FinCEN on its own schedule.
Do I file a separate Form 8621 for each fund?
Generally yes. The form is filed per PFIC, per year. Five Canadian funds means five forms annually, which is why the preparation cost can exceed what a small portfolio earns.
Do I file Form 8621 for funds in my RRSP?
Generally no. Under the treaty and IRS guidance, PFIC reporting is usually not required for funds inside an RRSP or RRIF. TFSAs and RESPs do not receive that relief, so exposure persists in both.
What if I never filed Form 8621 in past years?
Unfiled forms can keep prior returns open to adjustment under section 6501(c)(8) and leave you in the harshest default regime. Correction is often possible through IRS compliance procedures, sometimes with late-election relief, but it is fact-specific and best handled with a professional.
Does filing Form 8621 mean I owe tax?
Not necessarily. It is an information return, and in a year with no distribution or disposition it may report no income at all. But it is also where elections are made, so filing it correctly can change what you owe in every later year.
Can I make a QEF election late?
Sometimes, but not as a matter of course. Elections are generally required on a timely filed Form 8621 for the first year you want them to apply. Late-election relief exists in defined circumstances and needs professional handling.
Is Form 8621 the same as Form 8938 or the FBAR?
No. All three can apply to the same portfolio and none discharges the others. Form 8621 reports PFIC holdings, Form 8938 reports specified foreign financial assets with your return, and the FBAR reports foreign accounts to FinCEN separately.
How do I know which of my funds are PFICs?
Start with where each fund is domiciled rather than what it holds. Canadian-listed mutual funds and ETFs are the usual culprits, and a cross-border advisor can identify exposure from a statement quickly.
More from the PFIC series
- PFIC Rules for US Persons in Canada — the complete guide
- What Is a PFIC? — the definition and the two tests
- PFIC Elections — QEF vs mark-to-market vs the default regime
- PFICs Inside TFSAs and RESPs — where treaty relief stops
Unsure whether you owe a Form 8621? We help Americans in Canada find their PFICs, sort out the filing, and rebuild portfolios that work under both tax systems — as one of the only firms dual-registered as a Portfolio Manager in Canada and an RIA in the US. Book a complimentary consultation.
