A withholdable payment under FATCA is any U.S.-source payment of fixed, determinable, annual, or periodical (FDAP) income made to a foreign entity, plus, in theory, gross proceeds from selling property that could generate U.S.-source interest or dividends. When the foreign recipient hasn’t met its FATCA reporting obligations, the withholding agent must deduct a 30% tax from the payment before sending the rest overseas.1Office of the Law Revision Counsel. 26 USC 1471 – Withholdable Payments to Foreign Financial Institutions That 30% default is the lever the U.S. government uses to push foreign financial institutions and other foreign entities to identify and report accounts held by U.S. persons.
What the Statute Actually Covers
Section 1473(1) of the Internal Revenue Code defines a withholdable payment as any payment of U.S.-source FDAP income, plus gross proceeds from selling property that could produce U.S.-source interest or dividends.2Office of the Law Revision Counsel. 26 USC 1473 – Definitions FDAP is a tax term with two characteristics. The amount has to be calculable, even if the exact figure isn’t known until the payment date, because a formula or rate exists. And the payments have to recur or be tied to specific triggering events, rather than being one-time business profits.
The U.S. source requirement is built into the definition. Foreign-source income that happens to pass through a U.S. bank does not become withholdable just because it touched the domestic financial system.
Within that frame, the sweep is broad. Treasury regulations catch the obvious items and quite a few less obvious ones.3eCFR. 26 CFR 1.1473-1 – Section 1473 Definitions The major categories:
- Interest on debt instruments, bank deposits, and original issue discount (the built-in gain when a bond is issued below face value).
- Dividends from U.S. corporations, including certain constructive dividends.
- Rents and royalties from property located in the U.S., including intellectual property royalties.
- Salaries, wages, commissions, and other compensation for personal services performed in the U.S., including signing bonuses.
- Insurance premiums and annuity payments with a U.S. source.
- Prizes, awards, scholarships, and any other recurring or calculable income from U.S. sources.
If a payment type looks like passive investment income and originates within U.S. borders, it almost certainly qualifies.
What Falls Outside
Several categories of cross-border payments are not withholdable, and the distinctions matter because a payer who over-withholds creates problems for the recipient and refund work for itself.
Payments for goods bought in the ordinary course of business — a U.S. manufacturer paying a foreign supplier for raw materials, for example — do not constitute FDAP income and fall outside the definition. The same goes for payments for most non-financial services that do not resemble passive investment returns. FATCA was designed to catch hidden investment income, not to interfere with everyday commercial trade.
Foreign-source income stays outside FATCA’s reach even when paid through a U.S. financial institution, because the U.S.-source requirement is baked into the definition itself.
Income effectively connected with a U.S. trade or business (ECI) is also excluded, because it is already taxed through a different mechanism. A foreign corporation earning ECI files Form 1120-F and pays tax at standard corporate rates; a foreign individual files Form 1040-NR and pays at graduated individual rates.4Internal Revenue Service. 2025 Instructions for Form 1120-F To claim the exclusion, the foreign recipient gives the withholding agent Form W-8ECI, which attests that the income will be reported on a U.S. return. If the documentation lapses or turns out to be incorrect, the agent reverts to the 30% default.
Grandfathered obligations sit outside the regime as well. An obligation outstanding on July 1, 2014, that has not been materially modified since is treated as grandfathered, and payments made under it are not withholdable.5eCFR. 26 CFR 1.1471-2 – Requirement to Deduct and Withhold Tax on Withholdable Payments to Certain FFIs The protection ends the moment the obligation is materially modified, because the modification causes the instrument to be treated as newly issued.
When the 30% Withholding Kicks In
FATCA sets up two parallel withholding rules based on who receives the payment.
For payments to a foreign financial institution that has not entered into an FFI agreement with the IRS, the withholding agent must deduct 30%.1Office of the Law Revision Counsel. 26 USC 1471 – Withholdable Payments to Foreign Financial Institutions Under an FFI agreement, the institution commits to identifying which of its account holders are U.S. persons, performing due diligence on those accounts, and reporting the account information annually. It also agrees to withhold 30% on payments it makes to recalcitrant account holders and to other foreign financial institutions that haven’t entered their own agreements.
For payments to a non-financial foreign entity, the same 30% applies unless the beneficial owner either certifies that it has no substantial U.S. owners or discloses the name, address, and taxpayer identification number of each one.6Office of the Law Revision Counsel. 26 USC 1472 – Withholdable Payments to Other Foreign Entities The withholding agent passes that ownership information to the IRS. This is the mechanism that closes the loop on U.S. persons who might otherwise hide behind a foreign shell.
The rate isn’t always a final tax. A foreign entity that later establishes compliance or claims treaty benefits can seek a refund. But 30% of every covered payment is steep enough that most foreign financial institutions worldwide have chosen to register with the IRS and obtain a Global Intermediary Identification Number (GIIN) rather than absorb the hit. The IRS maintains a searchable list of registered institutions so withholding agents can verify a payee’s GIIN before processing a payment.7Internal Revenue Service. FATCA Foreign Financial Institution List Search and Download Tool
How Foreign Recipients Document Their Way Out of Withholding
The 30% withholding applies by default. The burden falls on the foreign payee to prove it deserves a lower rate or an exemption. A withholding agent must withhold the full 30% unless it can reliably connect the payment to valid documentation showing the payee is a U.S. person, a foreign beneficial owner entitled to a reduced rate, or FATCA-compliant.8Internal Revenue Service. Beneficial Owners
The primary documentation forms are:
- Form W-8BEN, used by foreign individuals to claim beneficial owner status and, where applicable, treaty-based rate reductions.9Internal Revenue Service. About Form W-8 BEN
- Form W-8BEN-E, used by foreign entities to document their chapter 3 and chapter 4 status, claim treaty benefits, and identify their FATCA classification.10Internal Revenue Service. Instructions for Form W-8BEN-E
- Form W-8ECI, used when the income is effectively connected with a U.S. trade or business.
A Form W-8BEN generally remains valid from the date it is signed through December 31 of the third following calendar year. A form signed on March 15, 2026, expires on December 31, 2029.11Internal Revenue Service. Instructions for Form W-8BEN If the payee’s circumstances change before then, say they move to a country with a different treaty or acquire U.S. tax residency, the form becomes invalid immediately. Without a current, valid form on file, the withholding agent has no choice but to withhold at 30%.
When a withholding agent cannot connect a payment to valid documentation at the time of payment, it generally must withhold. If it skips the withholding anyway, it becomes personally liable for the tax that should have been collected, unless it properly applied the presumption rules allowing it to treat the payment as exempt, or it obtained valid documentation after the payment date that confirmed the exemption was correct all along.12eCFR. 26 CFR 1.1474-1 – Liability for Withheld Tax and Withholding Agent Reporting Most institutions err on the side of withholding.
The Intergovernmental Agreement Route
Many foreign financial institutions comply with FATCA not through a direct IRS agreement but through an intergovernmental agreement (IGA) between their home country and the United States. Under a Model 1 IGA, the institution reports U.S. account information to its own government, which forwards it to the IRS automatically. Under a Model 2 IGA, the institution reports directly to the IRS, with the partner government supplying supplemental information when account holders decline to consent to disclosure.13Internal Revenue Service. FATCA Governments
A financial institution in an IGA country is generally treated as FATCA-compliant even without a direct FFI agreement. The withholding agent still needs to verify the institution’s GIIN. Over 100 jurisdictions have entered into some form of FATCA agreement with the United States, making the IGA framework the primary compliance channel for most of the world’s financial institutions.13Internal Revenue Service. FATCA Governments
Gross Proceeds and Dividend Equivalents: Where Statute and Practice Diverge
Two areas of the definition require care because what the statute says and what withholding agents actually do are not the same.
Gross proceeds first. The statute technically includes gross proceeds from selling property that could produce U.S.-source interest or dividends.2Office of the Law Revision Counsel. 26 USC 1473 – Definitions In practice, withholding on gross proceeds has never taken effect. Treasury issued proposed regulations in December 2018 that would remove gross proceeds from the definition of withholdable payment entirely, citing the heavy compliance burden on brokers and the limited benefit to FATCA’s objectives.14Federal Register. Regulations Reducing Burden Under FATCA and Chapter 3 Those regulations have not been finalized as of 2026, but withholding agents have relied on them since issuance. Selling U.S. securities does not currently trigger a 30% withholding on the full sale price, only on any FDAP income component like accrued interest.
Dividend equivalents on derivatives are the second area. Section 871(m) treats certain payments on equity derivatives and equity-linked instruments as dividend equivalents subject to withholding. If a derivative references a U.S. stock and replicates the economics of owning that stock, measured by a delta calculation, the payments can be treated as U.S.-source dividends even though no shares changed hands. The IRS has repeatedly extended transition relief. Notice 2024-44 extended the phase-in period through 2026 for delta-one transactions and delayed the effective date for non-delta-one transactions to those issued on or after January 1, 2027.15Internal Revenue Service. Notice 2024-44 – Extension of Transition Relief for Section 871(m) Regulations During this window, the IRS evaluates compliance based on good-faith effort rather than strict liability.
What Withholding Agents Face on the Reporting Side
Withholding agents that make FATCA-covered payments file Form 1042 as the annual withholding tax return, Form 1042-S for each payment of U.S.-source income to a foreign person, and Form 8966 for FATCA-specific account reporting.16Internal Revenue Service. About Form 8966, FATCA Report Forms 1042-S must be filed and furnished to recipients by March 15 of the following year, with an automatic 30-day extension available on Form 8809. Electronic filing through the IRS’s Information Returns Intake System (IRIS) is mandatory for anyone filing 10 or more information returns, any partnership with more than 100 partners, and all financial institutions regardless of volume; the older FIRE system has been retired for tax year 2026.17Internal Revenue Service. Instructions for Form 1042-S (2026)
Penalties escalate quickly. Late deposits of withheld tax draw 2% at 1 to 5 days late, 5% at 6 to 15 days, 10% beyond 15 days, and 15% if the amount is still unpaid 10 days after the first IRS notice.18Internal Revenue Service. 20.1.4 Failure to Deposit Penalty Separate penalties apply for late returns, missing recipient statements, and incorrect information. In the most serious cases involving willful failure to collect and pay over the tax, responsible individuals within the withholding agent’s organization can face personal liability under the trust fund recovery penalty.
A withholding agent that withholds in good faith is protected from claims by the payee for the withheld amount, but that protection only works if the withholding was proper. Under-withholding creates the worst of both worlds: liability to the IRS for the missing tax and disputes with payees over corrected withholding on future payments. That asymmetry is why, in close cases, most withholding agents choose to deduct the 30% and let the foreign recipient chase a refund.