If your US business pays foreign individuals or companies, you may be required to withhold US tax on those payments and report it to the IRS. These are the questions payors ask most often. Each answer points to the underlying rule so you can dig deeper or hand it to your advisor.
Why am I seeing 30% when the treaty says 0%?
The 30% figure is the US statutory default on US-source fixed or determinable, annual or periodical (FDAP) income paid to a foreign person (IRC §1441 for individuals, §1442 for foreign corporations). A treaty only lowers that rate when a valid, documented claim supports it. If any of the following is true, you are usually stuck at 30%:
- No valid W-8 on file. A missing, expired, or incomplete Form W-8BEN (individuals) or W-8BEN-E (entities) means no treaty claim exists.
- No US taxpayer ID where one is required. Many claims — and every Form 8233 services claim — need a US TIN.
- The wrong treaty article is cited, or the income type genuinely isn't covered by the article claimed.
- The treaty is suspended or terminated. Russia's treaty is currently suspended and Hungary's was terminated — both default to 30%.
- The treaty has no article for that income type, so 30% is simply the statutory rate.
- US-performed services with no valid Form 8233 on file.
Work the list top to bottom; the fix is usually a missing form or ID, not the rate itself.
What's the difference between a W-8BEN and a W-8BEN-E?
Both forms certify that the payee is a foreign beneficial owner and both can support a treaty claim on FDAP income — but they apply to different kinds of payees:
- Form W-8BEN is for foreign individuals (a sole-proprietor contractor, a freelance designer, an author).
- Form W-8BEN-E is for foreign entities (a corporation, partnership, or other organization). It is longer because it also captures the entity's Chapter 4 (FATCA) status, which an individual's form does not need.
A common mistake is collecting a W-8BEN from a company or a W-8BEN-E from a person. Match the form to who the beneficial owner is. If you pay "Acme Studios Ltd.," a UK limited company, you need a W-8BEN-E; if you pay Jane Smith trading under her own name, you need a W-8BEN.
For help choosing among the W-8 series, see W-8BEN vs. W-8BEN-E vs. W-8ECI, and to fill one out see How to complete a W-8BEN.
When does a director fee qualify for treaty relief?
It depends entirely on the Directors' Fees article of the specific treaty (OECD Model Article 16). There is no single rule, and the popular shortcut "if the director worked remotely it's 0%" is wrong for many countries. The patterns:
- Unconditional (always taxable): the fee "may be taxed" in the US regardless of where the work was done. Canada, Japan, China, and India fall here — 30% even for fully remote board work.
- Conditional / all-or-nothing: 0% if no services were performed in the US, but full 30% if any were (no proration). Germany, France, and the UK follow this.
- Pro-rata: taxable in proportion to US-rendered services — Netherlands, Sweden, Ukraine.
- Allocated by meeting location: Ireland and Chile look to where board meetings were held.
- De-minimis: Jamaica exempts the fee only if it does not exceed $400 per day present in the US — a cliff, not a sliding scale.
Because the wording drives the result, confirm the article before promising a rate. See Director fees: five treaty patterns and Conditional director fees (the France example).
What is a permanent establishment?
A permanent establishment (PE) is a fixed place of business — an office, branch, factory, workshop, or similar — or a dependent agent who habitually concludes contracts, through which a foreign enterprise carries on business in another country. Treaties use the PE concept as a threshold: the source country (here, the US) may tax an enterprise's business profits only if that enterprise has a PE there (OECD Model Article 7).
Why it matters for withholding: several kinds of income that don't fit a special article — independent business services, equipment rental that isn't a royalty, certain film/TV income — are treated as business profits. If the foreign payee has no US permanent establishment and files a valid treaty claim, US withholding on those business profits is generally 0%. If a US PE exists, the income is taxed on a net basis as effectively connected income (reported on Form W-8ECI) instead.
So when a UK software contractor with no US office bills your company for development work, a valid business-profits claim generally produces 0% withholding — precisely because there is no US PE. Entities must also clear the treaty's Limitation on Benefits test (see below).
Why is W-8BEN expiration important?
A Form W-8BEN is generally valid from the date it is signed through the end of the third succeeding calendar year, unless a change in the payee's circumstances makes it unreliable sooner. A form signed in March 2024, for example, is generally good through December 31, 2027.
Why it matters: an expired W-8BEN is treated as no form at all. Once it lapses, the treaty claim it supported disappears and you must withhold at the 30% statutory rate on every subsequent payment until a fresh, valid form is on file. The IRS holds the withholding agent — you, the payor — responsible for under-withholding, so a stale form is your exposure, not just the payee's.
Practical habit: track each form's expiration the same way you track an insurance certificate. Before the first payment of each new year, confirm the W-8 on file is still within its validity window, and request a replacement well before it lapses. A change in circumstances (the payee moves, changes entity type, or loses treaty eligibility) requires a new form immediately, regardless of the calendar. Consult a qualified tax advisor if you are unsure whether a particular change invalidates a form.
Can I claim a treaty rate without a US TIN?
Usually not. A US taxpayer identification number (an SSN, or an ITIN for someone ineligible for an SSN) is required for many treaty claims and is mandatory for a Form 8233 claim of exemption on personal-services income. Without it, expect 30%.
There is a narrow exception: certain FDAP treaty claims made on Form W-8BEN can rely on the payee's foreign tax identifying number instead of a US TIN — for example, some passive-income claims where no US TIN is otherwise required. But services exemptions and many other claims still require a US TIN, so do not assume the foreign number is enough.
Because the rules turn on the income type and the exact claim, the conservative course is: if the payee cannot supply a US TIN where one is needed, withhold at 30% and let them recover any overpayment by filing a US return. Getting an ITIN takes time (Form W-7), so a payee who expects treaty relief on services should start that process early — ideally before the first US engagement. Confirm the specific requirement with a qualified tax advisor for an unusual fact pattern. See Form 8233 vs. W-8BEN.
What's the deadline for Form 1042?
Form 1042 — your annual withholding tax return summarizing US-source income paid to foreign persons and the tax withheld — is generally due March 15 of the year following the calendar year of payment. An automatic extension of time to file is available by filing Form 7004, though that extends only the filing, not the payment.
The companion Form 1042-S statements (one per payee) are generally furnished to recipients and filed with the IRS by March 15 as well.
Separately, the tax you withhold must be deposited during the year on a schedule that depends on how much you have accumulated — deposits can be required quarterly, monthly, or within a few days, so do not wait until March 15 to remit the money you have already withheld. Late deposits and late returns each carry their own penalties.
Because deposit frequency and any year-specific date shifts (for weekends or holidays) depend on your facts, confirm your exact deadlines against the current Form 1042 instructions or with a qualified tax advisor before each filing season.
How do I handle a refund request from a payee?
It depends on timing. If you over-withheld and catch it within the same calendar year, you may be able to make the payee whole using the reimbursement or set-off procedures: you repay the excess to the payee (reimbursement) or reduce a later deposit by the over-withheld amount (set-off), then reflect the correction on your year-end Form 1042 and 1042-S. These procedures have specific timing and documentation conditions.
Once the year has closed, you generally cannot fix it through your own deposits. At that point the payee normally must claim the refund directly from the IRS by filing a US income tax return — Form 1040-NR for an individual or Form 1120-F for a foreign corporation — using the Form 1042-S you issued as proof of the tax withheld.
As the withholding agent, your job is to document everything: the original withholding, the basis for the correction, and any repayment to the payee. The reimbursement and set-off mechanics are technical and easy to get wrong, so confirm the procedure and timing with a qualified tax advisor before adjusting deposits.
What is Limitation on Benefits (LOB)?
Limitation on Benefits is an anti-treaty-shopping article found in most modern US treaties. It exists to stop a resident of a third country from routing income through a treaty-country shell company just to capture a low rate. To qualify for treaty benefits, a foreign entity must affirmatively meet one of the article's objective tests — for example, being publicly traded, satisfying an ownership-and-base-erosion test, or being engaged in an active trade or business connected to the income.
Why it matters for withholding: a foreign company claiming a reduced rate on Form W-8BEN-E is asserting that it qualifies under LOB (the form has a dedicated LOB section). If it cannot establish that it meets a test, the treaty rate is not available and you should withhold at the statutory rate until the qualification is documented.
Individuals are generally not subject to LOB — the article is aimed at entities and conduit structures. So an individual contractor's treaty claim does not raise an LOB question, while a claim from "Acme Holdings B.V." does. When an entity's LOB status is unclear, treat the claim as unsupported and consult a qualified tax advisor.
When is income considered US-source?
US withholding applies only to US-source income; foreign-source income paid to a foreign person is generally outside the US net (IRC §861–§865). The sourcing rule depends on the type of income:
- Services are sourced where the work is physically performed. A developer who does all the work from Berlin earns foreign-source income even though a US company pays her.
- Royalties are sourced where the intellectual property is used or exhibited — US-source to the extent the IP is exploited in the US.
- Rents are sourced where the property is located.
- Interest and dividends generally follow the residence or place of organization of the payor.
Why it matters: if only part of an engagement is US-source, only that part is withholdable. A foreign contractor who spends 8 of 20 project days physically in the US has 40% US-source services income; the remaining 60%, performed abroad, is foreign-source and not subject to withholding. Getting the sourcing right is often more valuable than the treaty rate, because foreign-source income is 0% regardless of any treaty. See Services withholding for foreign contractors.
What's the difference between Form 1042 and Form 1042-S?
They work together but do different jobs:
- Form 1042 is the payor's single annual withholding tax return. You file one Form 1042 for the year. It summarizes the total US-source income you paid to all foreign persons and the total tax you withheld and deposited — it is your reconciliation with the IRS.
- Form 1042-S is a per-payee, per-income-type information statement. You issue one to each foreign payee (and file copies with the IRS) showing that payee's income, the income code, the tax withheld, and any treaty rate claimed. A payee who received two different kinds of income may even get two 1042-S forms.
So a payor with twelve foreign contractors files one Form 1042 and at least twelve Forms 1042-S. Think of the 1042 as the cover summary and each 1042-S as a line-item statement to one recipient — analogous to the relationship between a Form W-3 transmittal and the individual W-2s, but for foreign-person withholding.
The totals on all your 1042-S forms must reconcile to the amounts reported on the single Form 1042; a mismatch is a common source of IRS notices.
What if a payee provides multiple W-8 forms over time?
Use the most recent valid form, and match the form to the payment date it governs. A new, valid W-8 supersedes the prior one as of the date you receive it — so once a payee sends an updated W-8BEN, that is the form controlling treaty claims going forward.
But do not discard the old ones. An earlier form may still be the form in effect for prior-period payments, and you need it to support the rate you applied back then if the IRS asks. Keep the full history in your records, each tied to the period it covered.
A change in circumstances — the payee moves to a different country, changes from an individual to an entity, or otherwise loses eligibility for the rate they claimed — invalidates the old form immediately, even if it had not yet reached its expiration date. In that case you should obtain a fresh form before applying any treaty rate.
Worked example: a contractor signs a W-8BEN in 2024 claiming a German treaty rate, then sends a new W-8BEN in 2026 after relocating to a non-treaty country. Payments before the 2026 form rely on the 2024 form; payments after it follow the new (likely no-treaty) form. When the right form for a period is unclear, consult a qualified tax advisor.
How do I correct a 1042-S after filing?
File a corrected Form 1042-S — the same form with the "Amended" box checked — for each payee whose original was wrong. Report the right income, income code, and tax withheld, and furnish the corrected statement to the payee as well as filing it with the IRS.
If the correction changes your totals (for instance, you reclassified income or fixed a withholding amount), you must also amend Form 1042 so the annual return continues to reconcile to the sum of the 1042-S forms. A corrected 1042-S that throws the 1042 out of balance invites a notice.
Timeliness matters. The IRS assesses information-return penalties that scale with how late the correction is, so the sooner you file the amended forms, the lower the exposure. Small, promptly corrected errors are treated far more leniently than ones left to surface in an examination.
Because the corrected-return mechanics (which boxes, what to do when the original was filed electronically, how penalties are computed) follow the current-year IRS instructions and can change, confirm the procedure against the latest Form 1042-S instructions or with a qualified tax advisor before filing.
What about state withholding on foreign payments?
Federal withholding on foreign persons (Chapter 3) is entirely separate from state income-tax withholding. Clearing the federal question does not settle a state one. Some states impose their own withholding on payments to nonresidents — including foreign persons — under their own rules, rates, and thresholds, often tied to where services are performed or where the payee does business in the state.
Crucially, income-tax treaty benefits are a federal matter, and many states do not honor US income-tax treaties. A payment that qualifies for a 0% federal treaty rate can still be subject to state withholding, because the state is applying its own law rather than the treaty. So the German contractor whose services income is treaty-exempt federally may still face withholding in a state that taxes nonresident service income.
Because the 50 states diverge widely — some have no withholding, some exempt certain payment types, some require it above a dollar threshold — you must check the specific state's rules for each payment. Treat state withholding as a distinct obligation, and consult a qualified tax advisor or the relevant state revenue department when a payment has a state nexus.
When does FIRPTA apply?
FIRPTA — the Foreign Investment in Real Property Tax Act (IRC §1445) — applies when a foreign person disposes of (sells) a US real property interest. It generally requires the buyer to withhold 15% of the gross amount realized (the sale price, not the gain) and remit it, usually collected at closing by the closing or settlement agent.
It is important to keep FIRPTA in its own lane. It is a separate mechanism from the ordinary, recurring-payment FDAP withholding this guide otherwise covers, and it is also distinct from real-property rental income — rents to a foreign owner are taxed at 30% gross (or 0% Chapter-3 on a net-basis election via Form W-8ECI), not the 15% FIRPTA rate. FIRPTA is about the sale, rental withholding is about the income stream.
For an ordinary payor processing service fees, royalties, or director fees, FIRPTA on a property sale is out of scope — it is handled at the real-estate closing, not through your payment-withholding process. If a transaction involves a foreign person selling US real estate, work it through the closing agent and a qualified tax advisor, who will determine the correct withholding, any reduced-rate certificate, and the filing.
Continue reading
Stop guessing at withholding rates.
TaxCrossing applies IRS rules and treaty rates to your foreign payments — and shows the citation behind every decision.
This article is for general educational purposes and is not legal or tax advice. Withholding outcomes depend on the specific facts of each payment. Consult a qualified tax professional before making withholding decisions.