If you're reading this, something about your tax situation has you worried. That's fair — the IRS is intimidating until you know how the rules actually work. I'm Darrin Mish, a Tampa tax attorney. I've handled cases like yours for 32 years. Let me walk you through it.
The Form Most Taxpayers Never Heard Of
Form 3520 is the “Annual Return To Report Transactions With Foreign Trusts and Receipt of Certain Foreign Gifts.” It is one of the most consequential international information returns in the Code, and most taxpayers, and many tax preparers, have never seen it.
The form covers four very different categories of transactions. Missing it generates one of the largest information return penalties in the Internal Revenue Code. Filing it correctly is straightforward once you know what triggers each section.
The Four Things Form 3520 Reports
Part I reports transfers by U.S. persons to foreign trusts. If you transferred property to a foreign trust during the year, whether by gift, sale, or other means, Part I captures that transaction. This is the rare side of the form for most filers.
Part II reports U.S. ownership of foreign grantor trusts. If you are treated as the owner of a foreign trust under the grantor trust rules (IRC §§671 through 679), Part II reports that status annually. Form 3520-A is the separate trust-level return.
Part III reports distributions from foreign trusts to U.S. beneficiaries. Any distribution – cash, property, use of trust assets – triggers Part III regardless of amount. There is no de minimis exception.
Part IV reports the receipt of large gifts or bequests from foreign persons. This is the section most relevant to inheritance recipients. The threshold is $100,000 in aggregate from non-resident alien individuals or foreign estates during the year, or approximately $18,000 from foreign corporations or partnerships (the corporate/partnership figure is inflation-adjusted).
When You Have to File
The form is filed annually for any year in which you had a triggering transaction. It is not a one-time form. Each year stands on its own.
The due date matches your income tax return due date including extensions. Form 4868 extensions for the 1040 also extend Form 3520.
Filing location: a separate mailing to the IRS Service Center in Ogden, Utah. The form does not get attached to your 1040. It travels separately.
The Penalty Structure
Under IRC §6677, missing Form 3520 carries some of the heaviest information return penalties in the Code.
For Part I (transfers to foreign trusts) and Part II (foreign grantor trust ownership), the penalty is 35 percent of the gross reportable amount.
For Part III (distributions from foreign trusts), the penalty is 35 percent of the distribution received.
For Part IV (foreign gifts and inheritances), the penalty is 5 percent per month up to a maximum of 25 percent of the unreported gift amount.
These penalties apply even when no tax was owed. They are information return penalties, not tax penalties, and they exist independently of any underlying income tax liability.
Reasonable Cause Defense
Under IRC §6677(d), all four parts of the Form 3520 penalty structure include a reasonable cause defense. The taxpayer must show the failure was due to reasonable cause and not willful neglect.
Reasonable cause for Form 3520 is one of the more developed areas of penalty litigation because the form is genuinely obscure. Courts and the IRS have generally accepted that first-time recipients of foreign gifts who had no reason to know about the obligation can establish reasonable cause.
The argument is harder for taxpayers with sophisticated tax advisors, taxpayers with prior international filings showing awareness of foreign reporting, or taxpayers with multiple years of identical transactions making the failure look systemic rather than first-time.
What Form 3520 Does Not Do
Form 3520 is informational. It does not impose tax on the transactions it reports.
The receipt of a foreign gift or inheritance is not taxable income under IRC §102(a). The form reports the receipt; the receipt itself produces no tax.
Distributions from foreign trusts may be taxable depending on the trust character and the underlying trust income, but that taxation is determined under separate provisions (§652, §662, the throwback rules) and reported on Form 1040, not on Form 3520.
Transfers to foreign trusts may trigger gain recognition under IRC §684 if appreciated property is transferred, but again that tax consequence flows through to the income tax return.
How Form 3520 Interacts with Form 3520-A
Form 3520-A is the annual return of the foreign grantor trust itself, filed by the U.S. owner under §6048(b). The two forms work together for foreign grantor trust situations.
If you are the U.S. owner of a foreign grantor trust, you file Form 3520-A as the responsible person for the trust’s annual return (or arrange for the trustee to file it) and you file Form 3520 Part II as the U.S. owner reporting your status.
Both forms carry independent penalties. Missing one but filing the other does not protect against the penalty on the missed form.
The Streamlined and Voluntary Disclosure Paths
Late Form 3520s can be filed through the same disclosure programs that handle late FBARs. The Streamlined Filing Compliance Procedures incorporate Form 3520 for taxpayers with non-willful conduct. The Voluntary Disclosure Practice handles willful situations.
For inheritance situations specifically, which generally fit clean non-willful patterns, the Delinquent International Information Return Submission Procedures may also apply. This program allows late filing of Form 3520 with a reasonable cause statement when the taxpayer has no unreported income from the underlying transaction.
What to Watch Out For
Three traps catch repeat filers and first-time filers alike.
First, the corporate/partnership gift threshold is much lower than the individual threshold. A $25,000 gift from a foreign corporation requires filing even though a $25,000 gift from a foreign individual does not.
Second, trust distributions trigger Part III regardless of amount. A $5,000 distribution from a foreign trust requires Form 3520. There is no minimum.
Third, aggregation across multiple transfers from the same foreign donor during the calendar year is total, not per transfer. Three $40,000 wires from the same foreign parent hit the $100,000 threshold.
Get Help Now
If you have a Form 3520 triggering transaction – a foreign trust connection, a foreign inheritance, a large foreign gift – the filing has to happen and the late penalties are severe. Contact the Law Offices of Darrin T. Mish, P.A. at (813) 229-7100 for a free consultation. We have filed every part of Form 3520 and we know which sections apply to your situation.