If you're a US citizen or green card holder who owns or controls a family trust back in India a formal trust deed, an HUF, or in some cases even an EPF or NPS account that trust owes the IRS its own Form 3520-A every year, whether or not it paid you anything. It's due before your personal return, it's technically the trustee's job to file, and when the trustee in India doesn't cooperate, the exposure quietly shifts onto you. Here's exactly what determines whether your family's arrangement is caught, how a 2024 change to the IRS's penalty process affects families who are already late, and what to do if a year has slipped by unfiled.

What Is Form 3520-A (and How Is It Different From Form 3520)?

These two forms look similar but serve very different purposes.

Form 3520-A is the trust's own annual disclosure: its assets, its income, its beneficiaries, and everyone the IRS treats as an owner. It's filed in the trust's name, runs every year the ownership condition exists, and isn't tied to any single transaction or transfer.

Form 3520, by contrast, is a one-time form you attach to your personal return when you receive a large foreign gift or inheritance, or when you have a reportable transaction with a foreign trust. It's event-driven. Form 3520-A is not.

Here's a side-by-side comparison:

Who Counts as the "US Owner" of an Indian Family Trust?

The trigger lives in the grantor trust rules, specifically Internal Revenue Code Sections 671 through 679. Section 679 casts a particularly wide net for foreign trusts. If a US person funded a foreign trust that has (or could plausibly have) a US beneficiary, that person is generally treated as owning the portion they funded. Control over how the trust is run, such as the power to change beneficiaries, direct the trustee, or revoke the arrangement, can create the same result even without directly funding it.

Take Ravi, a naturalized US citizen living in Austin. His mother set up a family trust in Pune in 2017 to hold a flat and some mutual funds, and named Ravi as a co-trustee with authority to approve sales and reinvestments. Ravi never drew any income from the trust and assumed that since the money stayed in India, the IRS wasn't involved. That assumption is wrong. Because he holds real control over the trust's assets, Ravi is a US owner under the grantor trust rules, and the trust owes Form 3520-A for every year that control exists.

Does a Hindu Undivided Family (HUF) Qualify as a Foreign Trust?

This is one of the more common questions in Indian family trust IRS reporting, and the honest answer is: it depends.

An HUF holds ancestral property in a way where no single member holds a defined, severable share. The IRS has never issued a direct ruling classifying HUFs, but that structural feature (no individual beneficial ownership) is exactly what can tip the analysis toward foreign trust treatment rather than partnership treatment. If you're the karta or a coparcener with US tax residency, you shouldn't assume either outcome without a professional review. It genuinely turns on how your specific HUF is structured and controlled.

Form 3520-A Deadlines: What You Need to Know Before You File

Before any filing can happen, the trust needs its own Employer Identification Number (EIN). Nothing about an Indian family trust feels like it needs a US tax ID, but the EIN application (Form SS-4) is a prerequisite, not something you can leave for the week before the deadline. Getting this done early is often the difference between filing on time and filing late.

Once the EIN is in hand, two separate deadlines run in parallel and do not share an extension:

A family can file its personal 1040 correctly and on time and still be delinquent on the trust's return, because these two deadlines were never linked. The March 15 date passes quietly, and by the time anyone checks in around the summer extension deadline, the trust filing is already months overdue.

What Happens When the Trustee in India Won't File?

Filing responsibility sits with the trustee first. In practice, that trustee is usually a parent, sibling, or other relative in India who has never dealt with the IRS and has no reason to believe a US form applies to a trust that never left the country. When their cooperation doesn't materialize, the obligation doesn't disappear. It shifts to the US owner.

The IRS instructions are specific about the mechanics here, and this is where a lot of guidance online gets fuzzy. A substitute Form 3520-A doesn't carry the trust's independent March 15 deadline. It gets attached to your own Form 3520 and is due on that same date, meaning it follows your personal return's timeline, including any extension you filed under Form 4868.

Filing the substitute return, even an incomplete one built from whatever records you can gather, is what protects you from the penalty for the trust's failure to file.

Form 3520-A Penalty: What It Costs to Miss This Filing

Miss the filing, file it late, or file it incomplete, and Section 6677 sets the penalty at whichever is greater: $10,000 or 5% of the gross value of the US-owned portion of the trust. It's assessed against the US owner the moment the deadline passes, regardless of whether the IRS has sent any notice. If the failure isn't corrected within 90 days of an IRS notice, an additional $10,000 applies for every 30-day period (or part of one) that the delinquency continues.

For years, these penalties were largely automatic. A late Form 3520-A would trigger an assessment before anyone at the IRS looked at the taxpayer's explanation. That changed with an Internal Revenue Manual update in November 2024. The IRS now reviews a reasonable-cause statement attached to a late-filed Form 3520-A before manually assessing the Section 6677 penalty, rather than assessing first and leaving you to seek abatement afterward.

This is not a guarantee of relief, and the explanation still has to hold up. But it's a materially better starting position than the automatic-penalty regime that came before, and it's a detail that gets lost in most write-ups of this form.

How to Avoid the Penalty: What Counts as Reasonable Cause

Reasonable cause under Section 6677 asks whether you exercised ordinary business care and prudence and still couldn't comply. It's not about having a good reason to be frustrated by the requirement.

Arguments that tend to hold up: relying on a qualified professional who had the full facts and still missed the filing, a foreign trustee who withheld records despite genuine efforts to get them, or only recently discovering that a family arrangement made you an owner under the grantor trust rules.

Two arguments the IRS explicitly rejects, and families raise both often:

• That Indian secrecy or confidentiality customs around family assets prevented disclosure.
• That the trust deed itself restricts what beneficiaries can share.

Neither meets the reasonable-cause-and-not-willful-neglect standard. It's better to know this upfront than to build a case around one of them.

One more thing worth knowing: first-time penalty abatement, the relief many taxpayers reach for automatically with the IRS, generally doesn't apply to international information return penalties. Reasonable cause, documented specifically and in chronological order, is the framework that actually works here.

Already Behind? How to File a Delinquent Form 3520-A

Families who discover the obligation after the fact aren't limited to waiting for an IRS notice. The Delinquent International Information Return Submission Procedures allow a taxpayer who isn't already under IRS examination to file the missing Form 3520-A directly, with a reasonable-cause statement attached.

One mechanical detail that trips people up: write "Reasonable Cause Statement Attached" at the top of the first page. Skip that line, and the return can be processed (and a penalty notice generated) before anyone at the IRS reads the explanation sitting right behind it. This route doesn't guarantee the penalty is waived, but it's the correct channel to get your explanation in front of the IRS at the earliest possible point, rather than only after a CP15 notice arrives.

Can an EPF or NPS Account Trigger Form 3520-A?

The foreign trust classification question doesn't only come up with a formally drafted trust deed. An Employees' Provident Fund (EPF) or National Pension System (NPS) account can raise the same question, because both involve contributions held and invested by a third party for the member's eventual benefit, which shares real structural features with a foreign trust.

The practical question a preparer has to work through is whether the account's structure makes it a foreign grantor trust in addition to, or instead of, being a PFIC (passive foreign investment company), since those two labels carry different reporting consequences and aren't mutually exclusive. This is worth raising proactively with whoever prepares your US return, rather than assuming a retirement account sits automatically outside the trust rules because it doesn't come with a deed.

How Form 3520-A Overlaps With FBAR, FATCA, and Form 8938

An Indian family trust rarely triggers just one filing. Here's how the related obligations stack up:

The small relief worth knowing: an asset already reported on Form 3520-A doesn't need to be separately itemized on Form 8938, though its value still counts toward whether you cross the 8938 filing threshold, and it still needs to be identified in Part IV.

Does Form 3520-A Apply to You? A Quick Summary

It applies to you if you're a US citizen or green card holder who funded an Indian family trust, controls its assets, or holds powers over distributions or trustee decisions that the grantor trust rules treat as ownership.

It does not apply if you're an NRI with no US tax residency and no green card. This is strictly a US-person filing obligation, unrelated to where the trust sits or where the family lives. It also doesn't apply to a one-off gift or inheritance with no ongoing trust, which falls under Form 3520 territory, or where every owner and beneficiary is entirely outside the US tax net.

Step-by-Step Compliance Checklist for Indian Family Trust US Tax Reporting

1. Confirm what the family structure actually is: a formal trust, an HUF, or something else. Get the deed or founding document in hand.
2. Identify the trustee and confirm whether they're even aware a US filing obligation exists. Most aren't.
3. Apply for the trust's EIN early. It's required for both Form 3520-A and its extension, and the process isn't instant.
4. Get the trustee and a US preparer communicating well before March 15, not after the deadline passes.
5. If the trustee won't file, prepare the substitute Form 3520-A and attach it to your own Form 3520 by your personal return's due date.
6. Check whether the trust holds Indian mutual funds or other PFICs that require separate Form 8621 filings.
7. If a prior year was missed, file through the delinquent filing procedure with a reasonable-cause statement attached, rather than waiting for an IRS notice.

Four Mistakes NRI Families Make With This Form

“My personal extension covers the trust too." It doesn't. Form 4868 extends your 1040 only. The trust needs its own Form 7004 filed under its own EIN, and no one files that on your behalf automatically.

"No distributions, so nothing to report." The obligation runs on ownership and control, not on what the trust paid out. A trust with zero distributions still owes the return if a US person owns it.

"This is the trustee's problem, not mine." It's the trustee's responsibility first, but silence from India doesn't transfer the risk. It hands the US owner the substitute filing requirement and the full penalty exposure instead.

"Indian family privacy customs are a valid excuse." The IRS has explicitly rejected foreign secrecy customs and confidentiality clauses in trust deeds as reasonable cause. Build any explanation around something else.

Conclusion

For US citizens and green card holders with Indian family trusts, Form 3520-A is an ongoing compliance obligation that cannot be overlooked simply because no distributions were received. Understanding ownership, deadlines, substitute filing rules, and reasonable-cause relief is essential. If a filing has been missed, acting promptly through the appropriate delinquent filing procedure can help address the issue before penalties escalate and protect future US tax compliance.