PFIC Penalty: What happens if you never filed Form 8621

If you held Indian mutual funds after moving to the US and never filed Form 8621, the "no penalty" line you may have heard is only half the story.

Today, I'll walk you through what the IRS can actually assess when this form goes unfiled, why the statute of limitations on those years never closes, how your Indian AMC is already reporting your holdings to the IRS through FATCA, and what the official fix looks like.

The misconception: "there's no penalty" for not filing Form 8621

Some CPAs tell their clients not to worry about Form 8621 because there's no flat dollar penalty for missing it. This is technically true, but it misses the larger picture.

Unlike the FBAR, which carries a $10,000 per-account penalty for non-willful violations, or Form 8938, which carries a $10,000 per-year penalty under Section 6038D(d), Form 8621 has no separate standalone fine. That part is accurate.

But the absence of a flat penalty doesn't mean there are no consequences. The real exposure is a tax problem that gets worse every year you delay. Understanding the PFIC tax rules for your Indian mutual funds is the starting point, but the penalty question is secondary to what the IRS can actually assess.

On the $10,000 figure that circulates online: this comes from Form 8938, not Form 8621. Form 8938 is a separate disclosure filed with your 1040 that requires you to report specified foreign financial assets above certain thresholds. For single filers, that's $50,000 at year-end or $75,000 at any point during the year. For married filing jointly, it's $100,000 and $150,000. If you missed Form 8938 and your assets exceeded these thresholds, the IRS can assess $10,000 per year under Section 6038D(d), with an additional penalty of up to $50,000 if you ignore IRS notices, bringing the total maximum to $60,000. This penalty is from a different form, but NRIs who missed Form 8621 often also missed Form 8938.

The bigger problem is what happens to the statute of limitations on your returns.

What actually happens: the open statute of limitations under IRC Section 6501(c)(8)

Normally, the IRS has 3 years from the date you filed your return to audit it and assess additional tax. If you understated income by more than 25%, that window extends to 6 years.

IRC Section 6501(c)(8) carves out an exception for certain international information returns. When Form 8621 is required and you didn't file it, the statute of limitations on PFIC-related items in your tax return stays open indefinitely. The clock never starts running until you file the form.

Take Rahul's situation. He arrived in the US in 2019 on an H1B visa and held ₹25 lakh (~$30,000) in Axis Bluechip Fund. He didn't know about PFIC rules, so he never filed Form 8621 for 2019, 2020, 2021, 2022, 2023, or 2024. In 2026, all six of those returns are still open for PFIC-related assessment. The IRS can audit any of them at any point in the future and assess PFIC tax, interest, and penalties, even if those years would otherwise be long closed.

What "indefinitely open" means in practice

When the IRS catches up, the tax is calculated under Section 1291, the default PFIC regime. Your gains are not treated as capital gains. They are spread back over your holding period and taxed at the highest ordinary income rate in effect each year, up to 37%. On top of that, the IRS charges daily compound interest on each year's deferred tax at the federal short-term rate plus 3%, running from the original due date of that year's return.

Then add an accuracy-related penalty on the underpayment. The standard rate under IRC Section 6662 is 20% for negligence or substantial understatement. But if the underpayment is tied to assets that should have been reported on Form 8938 but were not, IRC Section 6662(j) raises that rate to 40%. For most NRIs whose total foreign financial assets exceeded the Form 8938 threshold, the 40% rate is the one that applies.

One nuance worth knowing: some IRS guidance and case law suggests that if you had reasonable cause for not filing (you genuinely didn't know about PFIC rules), the SOL freeze may be limited to PFIC items on that return rather than everything else. But this is not guaranteed, and it is not something to rely on without a tax attorney's assessment of your specific facts.

The $10,000 Form 8938 penalty: where it actually comes from

If you missed Form 8938 alongside Form 8621, and your Indian mutual funds and other foreign financial assets exceeded the thresholds above, the IRS can assess $10,000 per year under Section 6038D(d). An additional penalty of up to $50,000 applies if the IRS notifies you of the failure and you don't correct it within 90 days, bringing the total maximum to $60,000.

This is a Form 8938 penalty. It is separate from any PFIC tax owed. But since many NRIs missed both forms, the total exposure often combines both.

How the IRS finds out: FATCA and your Indian mutual fund holdings

Many NRIs assume the IRS doesn't know about their Indian mutual funds. That assumption gets riskier every year.

India signed an Intergovernmental Agreement (IGA) with the US under FATCA in July 2015. Under this agreement, every Indian financial institution, including mutual fund houses, banks, and insurance companies, is required to collect a FATCA self-declaration from account holders. If you identified yourself as a US person, whether a citizen, Green Card holder, or H1B resident meeting the Substantial Presence Test, your AMC reports specific details to the Central Board of Direct Taxes (CBDT) each year. That data includes your name, US Social Security Number, account number, year-end balance, and total income credited during the year.

CBDT then passes this information to the IRS. As of 2024-2025, this exchange runs automatically. You can read how FATCA and CRS reporting applies to NRIs in full detail.

Many NRIs first discover they have a PFIC problem when their Indian AMC emails them to complete a FATCA declaration or freezes their folio. That freeze is a signal that you are already in the reporting pipeline.

What it costs when the IRS catches up

Here's a concrete example. Priya moved to the US in 2020 on an H1B visa. She held ₹30 lakh (~$36,000) in HDFC Flexi Cap Fund at the time of arrival. By the end of 2025, the fund had grown to ₹52 lakh (~$62,000). She never filed Form 8621 for any of those years.

Under Section 1291, the IRS calculates PFIC tax on the $26,000 gain by spreading it back over the 5-year holding period. Each year's allocated portion is taxed at the top ordinary income rate in effect that year, up to 37%. On top of that, daily interest runs from the original due date of each year's return to the date of payment.

After adding the accuracy-related penalty on the resulting underpayment (20% under Section 6662 standard rules, or 40% under Section 6662(j) if the assets should also have been on Form 8938), Priya's total tax bill on what started as a $36,000 holding could easily approach or exceed the entire gain itself. Your FBAR and PFIC compliance obligations interact here, too. If the accounts also had FBAR reporting requirements, the total exposure from missed filings across both forms adds up fast.

How to fix it: the IRS Streamlined Filing Compliance Procedures

The IRS has an official path for taxpayers who failed to report foreign financial assets, including PFICs, because they didn't know about the requirements or misunderstood them. It's called the Streamlined Filing Compliance Procedures.

The key term is non-willful conduct: negligence, inadvertence, or a genuine misunderstanding of the law. If you intentionally hid assets from the IRS, Streamlined Filing is not available to you. That path requires the IRS Criminal Investigation Voluntary Disclosure Practice instead. But most NRIs who missed Form 8621 fall into the non-willful category. They simply didn't know the rule existed.

One hard restriction: if the IRS has already started a civil examination of any of your returns, you lose access to Streamlined Filing entirely. This is the single biggest reason to act before the IRS contacts you.

Streamlined Domestic Offshore Procedures (you live in the US)

If you currently live in the US, use the Streamlined Domestic track. Here's what it involves:

• File 3 amended US tax returns (Form 1040-X) covering the 3 most recent years for which the filing deadline has passed, with all missing Form 8621s attached for each fund each year
• File 6 years of delinquent FBARs (FinCEN Form 114) for any foreign accounts that exceeded $10,000 at any point during the year, submitted through the FinCEN BSA E-Filing System
• Pay all back taxes owed plus interest
• Pay a 5% miscellaneous offshore penalty, calculated on the highest aggregate year-end value of your undisclosed foreign financial assets across the 6-year period
• Sign a certification confirming that your failure to comply was non-willful

The FBAR filings run alongside the Streamlined submission. A guide to fixing FBAR late filing explains the separate FBAR delinquent procedures that apply at the same time.

Streamlined Foreign Offshore Procedures (you lived outside the US)

If you did not have a US abode and spent at least 330 full days outside the US in at least one of the 3 years covered by your amended returns, you qualify for the Streamlined Foreign track. The documentation requirements are the same: 3 amended returns, 6 years of FBARs, and all missing Form 8621s.

The difference is the penalty. Under Streamlined Foreign, the miscellaneous offshore penalty is 0%. For NRIs who held Indian mutual funds while living in India and then moved to the US recently, this track may cover those earlier years at no penalty.

Tax attorney or CPA: who to hire for this

For straightforward cases, where your conduct was clearly non-willful, your assets were modest, and the IRS has not contacted you, a CPA experienced in international tax can handle the Streamlined submission.

For complex cases, you should consider a tax attorney. The key distinction is attorney-client privilege. Your attorney's notes and communications are protected from IRS discovery. Your CPA's working files are not. If there is any question about whether your conduct crosses into willful territory, or if the IRS has already reached out, those conversations belong in a privileged setting.

The question to ask any advisor you're considering: "Have you completed Streamlined Filing for NRIs with Indian mutual funds?" If they haven't, keep looking.

What to do right now if you haven't filed Form 8621

If you've read this far and realize you haven't been filing, here is where to start.

First, list every Indian mutual fund you've held since becoming a US tax resident. Include SIPs. Then gather the year-end NAV and unit count for each fund for each year you missed. Convert all balances to USD using the IRS's applicable Treasury exchange rates for each December 31.

Next, check whether your total foreign financial assets exceeded the Form 8938 threshold in any year. For single filers, that's $50,000 at year-end or $75,000 at any point during the year.

Contact a qualified tax professional with international experience before filing anything. The sequencing of amended returns, the FBAR submissions, and the certification language all matter, and small errors can complicate your Streamlined submission.

Then determine which Streamlined track applies, domestic or foreign, and proceed: 3 amended 1040-X returns with Form 8621 attached for each fund each year, 6 delinquent FBARs, and payment of back taxes, interest, and the applicable penalty. Our step-by-step guide to filing Form 8621 covers exactly how to complete the form, including the December 2025 INR currency code requirement. For every future year after that, attach Form 8621 to your annual 1040 before you file.

Conclusion

Missing Form 8621 for several years is one of the most common cross-border tax mistakes among NRIs who arrived on H1B or a Green Card without proper tax guidance. The IRS has a clear, structured path to fix it. Acting now through Streamlined Filing costs far less than waiting for the IRS to initiate contact.

Take stock of your Indian mutual fund holdings and speak with a qualified international tax advisor before the next filing season.

If you need help with US India cross border tax and PFIC compliance, Investmates NRI tax experts can assess your exposure and guide you through the right path to get back on track.