Hindu undivided family: US tax rules for NRI coparceners

If you're a US taxpayer with a share in a Hindu undivided family, the IRS has no rule naming it, so you decide how it's treated and file to match. I lean toward foreign trust, and a missed Form 3520 starts at $10,000. India, meanwhile, taxes the HUF as its own person.

What a Hindu undivided family is, for US tax purposes

How India sees an HUF

In India, a Hindu undivided family (HUF) is a separate person for tax. It has its own PAN, files its own return, and is taxed on its own income.

The Karta manages it, and the coparceners are the members who hold a share in the family property. An HUF arises automatically in a Hindu family, so you can belong to one without ever having signed a document.

How the IRS can classify it

The US has no such category. Its entity rules sort foreign bodies into a trust, a partnership or a corporation, and the list of foreign corporations that count automatically names only the "Public Limited Company" for India. The HUF isn't on it.

That leaves three possible fits, each with different forms:

• Foreign trust. Treas. Reg. 301.7701-4 describes trustees holding property for beneficiaries who don't share in running it. Form 3520 and Form 3520-A follow, plus an FBAR and Form 8938 if you're over the thresholds.
• Partnership. A foreign entity with two or more members, at least one without limited liability, defaults to a partnership under 301.7701-3. That means Form 8865.
• Corporation. If every member has limited liability, the default is an association taxed as a corporation. That means Form 5471.

I lean toward foreign trust. The Karta runs the HUF day to day, and coparceners mostly don't, which matches the trust split more closely than a joint business.

If the HUF is a trust, a Form 3520-A filing sits alongside your Form 3520. Either way, a position documented by a CPA beats an assumption.

How India's rules shape your US position

India decides who the HUF is before the US decides how to treat it. Under Section 6(2) of the Income-tax Act, 1961, an HUF is resident in India unless control and management sit wholly outside India. A Karta in Austin doesn't change that if any part of the management still runs from India.

The Karta's own record sets the second layer. An HUF is not ordinarily resident when its Karta has been non-resident in nine of the last ten years, or has spent 729 days or fewer in India across the last seven.

The Income-tax Act, 2025, effective April 1, 2026, keeps the same residence test.

Two more rules matter when you move money in or split the family assets:

• A gift from a member to the HUF is exempt because "relative" includes any member of the HUF. Income from property a member converts into HUF property is still clubbed with that member under Section 64(2). The 2025 Act moves clubbing to Section 99.
• A partition is not a transfer for capital gains under Section 47, and the cost of acquisition carries over to the coparceners. Only a total partition is recognised.

The Indian side is quiet after a partition. The US side often isn't.

What the IRS wants from a US-person coparcener

Everything above only bites if you're a US person: a citizen, a green card holder, or someone who meets the substantial presence test. If you're a nonresident alien for US tax, none of these US forms apply to your share. An H-1B holder who has passed the substantial presence test is in scope.

What a missed Form 3520 costs

The penalty formula is why the classification matters.

Worked example: an unreported HUF distribution

Priya is a green card holder in Austin. Her father's HUF distributes $60,000 to her, and the HUF is treated as a foreign trust.

• The penalty for not reporting it on Form 3520 is the greater of $10,000 or 35% of the distribution.
• 35% of $60,000 is $21,000.
• $21,000 is more than $10,000, so the penalty is $21,000.

The IRS instructions for Form 3520 set that formula. Form 3520-A carries its own penalty of the greater of $10,000 or 5% of the trust assets treated as yours.

Bank accounts and mutual funds

Bank accounts add a second trap. FinCEN requires an FBAR from a US person with a financial interest in, or signature authority over, foreign accounts once the aggregate passes $10,000 at any point in the year. If you sign on the HUF's account, whose money it is doesn't matter.

If the HUF owns Indian mutual funds, the PFIC attribution rules may reach you as well.

What to do about it

Work through these in order:

1. Get the HUF deed, the asset list and the name of the Karta.
2. Find every account where you're a signatory, and add the balances toward the FBAR threshold.
3. Ask a CPA to document a classification. That is the judgment call worth paying for.
4. File Form 3520 for any distribution you receive, on the same date as your return.
5. Tell your CPA before a partition, not after.

One firm view: I'd keep US-sourced money out of an HUF. Under IRC 679, a US person who transfers property to a foreign trust is treated as its owner while a US beneficiary exists, and that can pull the HUF's income onto your return.

If family wealth is heading to your children, NRI estate planning usually offers a cleaner route.

Common misreadings

"The HUF pays tax in India, so I owe nothing in the US"

India's tax on the HUF doesn't remove your US reporting. The US looks at your relationship to the HUF, and the filing duty sits with you.

"A partition is tax-free, so there is nothing to report"

It is tax-free in India for capital gains. Under trust treatment, what you receive in a partition can still be a distribution that belongs on Form 3520.

Conclusion

This week, find out whether you are a signatory on any HUF account and who is named as Karta. Those two facts decide most of your US filings, and I'd settle them before touching anything else. If a distribution or partition is coming, InvestMates can document the classification with you before the return is due.