The question behind the question
A US company pays a foreign contractor and someone asks whether the payment is FDAP income. The reason they ask is that FDAP is the trigger word. US-source FDAP income paid to a foreign person is the income that the 30 percent withholding regime is built to catch. So the real question is not academic. It decides whether you withhold tax before you pay, and whether you file a return with the IRS.
The answer has two parts, and most people only know the first one. Part one: is this the kind of payment that counts as FDAP at all? Part two: is it US-source? You need a yes to both before any withholding applies, and the second part is where contractor payments usually fall out of the net.
This guide gives the verified IRS answer to both parts, with the citations attached. A quick note before we start. This is general information, not tax or legal advice. Withholding and reporting outcomes turn on the facts of your situation, so confirm the specifics with a qualified tax professional before you pay.
What FDAP actually stands for
FDAP is an acronym for Fixed, Determinable, Annual, or Periodical income. The IRS defines the category on its FDAP income page, and the definition is broader than the name suggests. The page states that FDAP income “is all income except” two things: “Gains derived from the sale of real or personal property” and “Items of income excluded from gross income.”
So FDAP is a catch-all. It is everything that is not a property gain and not an item Congress carved out of gross income. The four words in the acronym describe how the income is paid, not a narrow list of what qualifies. Income is fixed when it is paid in amounts known ahead of time, determinable when there is a basis for figuring the amount, and periodical when it is paid from time to time. The IRS notes that income “can be periodic if it is paid from time to time. It does not have to be paid annually or at regular intervals.” A one-time lump sum can still be FDAP.
Yes, contractor pay is the kind of income that counts
Here is the part that surprises people who think FDAP is only about passive income like interest and dividends. The IRS FDAP income page lists “Compensation for personal services (such as commissions and gross proceeds from performances)” as an example of FDAP income.
That settles part one. A payment to a contractor for services is compensation for personal services, which is squarely the kind of income that can be FDAP. So if you were waiting to hear that contractor pay is “too active” to be FDAP, it is not. The category is built to include it.
But that is only half the test. FDAP as a category is not the same as FDAP that gets withheld. The withholding regime reaches US-source FDAP income only. Part two is the source question, and it is where most cross-border contractor payments come out clean.
The 30 percent rate and where it comes from
Before the source question, it helps to see exactly what is at stake if the answer comes back US-source. The IRS NRA withholding page states that “Most types of U.S. source income received by a foreign person are subject to U.S. tax of 30%.” The same page describes the regime as one “that requires 30% withholding on a payment of U.S. source income and the filing of Form 1042 and related Form 1042-S.” This is the chapter 3 regime, sitting in Internal Revenue Code sections 1441 to 1443.
So a US-source FDAP payment to a foreign person carries a 30 percent default withholding, collected by the payer, reported on Form 1042-S, with Form 1042 as the annual return. That 30 percent is not fixed in stone. A tax treaty between the contractor’s country of residence and the US can reduce or eliminate it, claimed on a valid Form W-8BEN. But 30 percent is the number you start from, which is why the source question matters so much.
The source rule that decides it
Whether a contractor payment is US-source turns on a single rule. For personal services, the IRS source-of-income rule states:
“The place, where the personal services are performed, generally determines the source of the personal service income, regardless of where the contract was made, or the place of payment, or the residence of the payer.”
Read what that excludes. Where the contract was made does not matter. The place of payment does not matter. The residence of the payer, meaning your company, does not matter. The only fact that counts is where the contractor physically performed the work.
Put the two halves together and the FDAP question resolves cleanly. A foreign contractor working entirely from their home country earns foreign-source income. It is the kind of income that would be FDAP if it were US-source, but it is not US-source, so it falls outside the FDAP income withholding regime. There is generally no 30 percent withholding and generally no Form 1042-S. A foreign contractor who performs work on US soil earns US-source income for that work, which is US-source FDAP income subject to NRA withholding unless a treaty reduces it.
Decision table
| Scenario | Is it FDAP-type income? | Is it US-source? | 30 percent withholding |
|---|---|---|---|
| Foreign contractor, all work performed abroad | Yes, compensation for services | No, foreign-source | Generally none, outside the regime |
| Foreign contractor, work performed inside the US | Yes, compensation for services | Yes, US-source | 30 percent by default, reducible by treaty |
| Mixed location, partly in the US | Yes, compensation for services | US-source for the in-US portion | On the US-source portion only |
| Income effectively connected with a US trade or business | Not taxed as FDAP | US-source, taxed differently | Net-basis graduated rates, not flat 30 percent |
Notice what is not in this table. The currency of the invoice, the bank account the money came from, and the country your company is incorporated in do not appear, because none of them change the source, and none of them change whether the payment is FDAP.
The mixed-location case
What happens when a contractor works mostly from abroad but spends two weeks in the US? The pay splits, and only the US slice is US-source FDAP income.
The IRS apportions personal service income earned partly inside and partly outside the US on a time basis. Per the source-of-income rule, the “U.S. source income is the amount that results from multiplying the total amount of pay by the fraction of days in which services were performed in the U.S.” So if a contractor earns a fixed fee and performed a measurable fraction of the work days on US soil, that fraction of the fee is US-source FDAP income that may need 30 percent withholding and a Form 1042-S, while the rest stays foreign-source. The moment work crosses into US borders, the FDAP analysis turns on for that portion, so flag it before you pay.
The effectively connected exception
There is one path where contractor income is US-source but still is not taxed as FDAP. If the income is effectively connected income, meaning it arises from a US trade or business the foreign person conducts, it is removed from the flat 30 percent FDAP regime. Effectively connected income is taxed on a net basis at the graduated rates that apply to a US person, after deductions.
A contractor in that position documents the status to you on Form W-8ECI rather than a W-8BEN, which takes the payment out of standard NRA withholding. This is narrower than a simple cross-border service payment, but it matters when a foreign person has a genuine US business presence. If you think it might apply, get tax advice on the specific facts before you withhold.
A quick decision path
Three questions, in order, for any contractor payment:
- Is it compensation for services? Almost always yes for a contractor, which means it is the kind of income that can be FDAP. This part rarely fails.
- Where did the contractor physically perform the work? All outside the US means foreign-source, outside the FDAP-withholding net. Any work inside the US means at least part is US-source FDAP income.
- For any US-source portion, does a treaty apply, or is the income effectively connected? A treaty claimed on a valid W-8BEN can cut the 30 percent. Effectively connected income documented on W-8ECI is taxed on a net basis instead.
Run those three and you have your answer for almost every contractor relationship. To get the underlying documentation right, work through our W-8BEN collection checklist before your next payment. It is free, instant, and walks the steps with the IRS citations attached.
Why the FDAP question feels harder than it is
The reason people get stuck on “is this FDAP” is that they treat it as one question when it is two. Yes, contractor pay is FDAP-type income. No, that does not mean you withhold, because withholding needs US-source on top of the FDAP category. Most cross-border contractor payments pass the first test and fail the second, which is exactly why a foreign person working abroad generally gets neither withholding nor a 1042-S.
Hold onto the two-part structure. FDAP category plus US-source equals withholding. Drop either one and the 30 percent does not apply.
When a platform handles it for you
A US founder paying one foreign contractor can run this analysis by hand. A US team paying contractors across several countries is tracking source-of-income calls, FDAP determinations, treaty positions, W-8BEN and W-8ECI forms, and reporting deadlines, and that is where the manual approach starts to leak.
Omnivoo Contract Management handles it for a flat $49 per finalized contract, according to our pricing page. We collect the right tax form, run the KYC, draft and manage the contract, and pay your contractors in 150+ countries, end to end. The same page confirms transaction fees are passed through at cost, with no FX markup and no subscription required.
Want the answer for your specific setup? See how Omnivoo Contract Management handles foreign contractors end to end, or talk to our team.