Paying International Contractors: IRS Rules and Tools

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Miss a single W-8BEN form and the IRS holds you responsible for 30% of every dollar you already paid your overseas contractor—out of your own pocket, not theirs. For a developer paid $4,000 a month, that oversight costs $1,200 per month in potential IRS liability. Most US business owners and expat founders never encounter this problem, because most international contractor payments don't trigger withholding at all. But understanding exactly when the rules apply—and when they don't—is what separates a clean books situation from an unexpected tax bill during an audit.

This guide covers the IRS income-source test, what forms to collect from contractors, when to file Form 1042-S, which payment platforms work well for cross-border contractor payments, and a practical checklist for staying compliant as you build a global team from abroad.

Does the IRS require withholding on international contractor payments?

The answer depends on where the contractor performs the work, not where they live. Foreign-sourced income—work done entirely outside the US—is generally exempt from US withholding, even when paid by a US business. US-sourced income is subject to 30% withholding unless a treaty or exemption applies.

Under IRC §1441 and IRS Publication 515, the determination flows like this:

Scenario	Income source	US withholding required?	W-8BEN required?
Contractor works entirely in Colombia, Poland, or Philippines	Foreign-source	No	Yes (for documentation)
Contractor performs services partially in the US	Mixed source	Yes, on the US portion	Yes
Contractor is a US citizen or green card holder anywhere	Worldwide	No (use 1099-NEC if $600+)	No (use W-9)
Foreign contractor earns US royalties, rent, or dividends	US-source	Yes, 30% statutory rate	Yes

The practical takeaway for most remote-first businesses: a software developer in Ukraine writing code, a designer in Bali building brand assets, or a writer in Mexico producing content—all working entirely in their home countries—generate foreign-source service income. No US withholding is due. The IRS still requires you to have a W-8BEN on file to document the foreign status and avoid backup withholding by default.

Where this gets complicated is when contractors travel to the US, perform US-site work, or provide services tied to US real property (which is always US-source). If a contractor spends two weeks in the US for an on-site project, those two weeks of pay may be US-sourced and subject to 30% withholding under §1441.

What to collect before you pay any foreign contractor

Before sending any payment to a foreign contractor—even the first invoice—collect a completed Form W-8BEN (for individuals) or Form W-8BEN-E (for foreign entities). If you send payment without this documentation, the IRS presumes the payee is a US person and requires backup withholding at 24%.

The W-8BEN form captures the contractor's name, country of citizenship, country of residence, and treaty position if applicable. An individual's W-8BEN is generally valid through the end of the third calendar year after signing—a form signed in October 2024 is valid through December 31, 2027. After that, you need a fresh form before making further payments.

Which W-8 form to request

• Form W-8BEN: individual foreign contractors (sole proprietors working under their own name)
• Form W-8BEN-E: foreign companies, LLCs, and other foreign legal entities
• Form W-8ECI: foreign contractors whose income is "effectively connected" to a US trade or business (rare for typical remote contractors but possible for US-based projects)

Store every W-8 form securely and track expiration dates. An expired form creates the same documentation gap as no form at all. Platforms like Deel and Remote.com handle W-8 collection automatically, which removes this administrative burden from your team.

When do you need to file Form 1042-S?

Form 1042-S (Foreign Person's US Source Income Subject to Withholding) is required only when you pay US-source income to a foreign contractor. If your contractor earns foreign-source income—which covers the majority of remote service providers working outside the US—you do not file 1042-S at all.

When 1042-S is required (because you have US-source income payments), you must:

1. Withhold at the applicable rate (30% statutory, reduced by treaty if applicable)
2. File Form 1042-S with the IRS by March 15 of the following year
3. Send a copy of Form 1042-S to the contractor by March 15
4. File Form 1042 (the annual withholding tax return) by March 15, which summarizes all 1042-S payments

Penalties for late or incorrect 1042-S filings start at $60 per form if filed within 30 days of the deadline and scale up to $330 per form for forms filed after August 1 or not filed at all.

1099-NEC vs. 1042-S: which form applies?

The form depends on the contractor's US person status, not on where they live. A US citizen living in Vietnam is a US person and gets a 1099-NEC. A Canadian citizen working from Toronto is a foreign person and gets either no form (if foreign-source income) or a 1042-S (if US-source income).

Contractor type	Form to send	Threshold
US citizen or green card holder (anywhere in the world)	1099-NEC	$600+ in the calendar year
Foreign national, foreign-source work only	None required (keep W-8BEN on file)	N/A
Foreign national, US-source income	1042-S	Any amount
No documentation (W-9 or W-8BEN not collected)	Withhold at 24% backup rate, then 1099	Any payment

The most common mistake for expat business owners: sending a 1099-NEC to a foreign contractor who submitted a W-8BEN. This is incorrect and can create confusion with the IRS. The W-8BEN is the contractor's certification that they are a foreign person; once you have it, 1099-NEC does not apply.

Payment platforms for international contractor payments

The mechanics of wire transfers and platform selection matter more for cross-border contractor payments than for domestic payroll. Exchange rate spreads, payment rails, and compliance features vary significantly.

Mercury Bank for US business banking

Mercury Bank offers free international wire transfers with no per-transaction fees on its standard business checking account. For an expat founder running a US LLC or C-Corp from abroad, Mercury handles USD-to-USD SWIFT wires at no cost, which works well for contractors who hold US bank accounts or USD accounts abroad. Mercury does not do foreign exchange natively, so if your contractor needs payment in a local currency, you'll need a second step—either the contractor converts on their end or you route through a currency platform first. Mercury Bank's savings account currently yields competitive returns on idle USD balances.

For more on using US business banking while living abroad, the guide to running a US business from Colombia covers the LLC, banking, and tax setup end to end.

Deel for managed contractor payments

Deel charges $49 per contractor per month for its standard contractor management plan. This covers compliant contracts in 150+ countries, automated W-8BEN and W-9 collection, local currency disbursements, and consolidated billing. For businesses paying five or more contractors monthly, Deel's compliance automation is generally worth the cost versus handling W-8BEN collection and 1042-S tracking manually.

Deel's Contractor of Record service—at $315–$599 per month per person—steps in when a business relationship is misclassification-adjacent: Deel becomes the employer of record, removing the contractor classification risk. This is different from standard contractor payments and applies mainly to workers who would legally be classified as employees in their home country.

Other platforms and direct wire

Platform	Best for	Typical fees
Mercury Bank	USD-to-USD wires, US LLC banking	Free international wires
Deel	Multi-country, compliance automation	$49/contractor/month
Remote.com	Contractor + EOR, local compliance	$29/contractor/month (contractor tier)
Payoneer	Contractors who prefer to pull payments	~2% FX + $29.95/year for recipient
SWIFT wire (direct bank)	Large one-time payments, no platform needed	$25–$45 per wire at most US banks

For large individual payments—a $15,000 project payout to a single contractor—a direct SWIFT wire often has the lowest absolute cost. For high-frequency, smaller monthly payments across multiple contractors in different currencies, a managed platform like Deel typically reduces operational overhead enough to justify the fee. See the guide to large international wire transfers for best practices on bank-to-bank payments above $10,000.

Paying contractors with crypto or stablecoins

Some expat founders pay global contractors in USDC, USDT, or other stablecoins to sidestep banking friction. The IRS treats cryptocurrency the same as cash for tax purposes: the fair market value of the crypto at the time of payment determines the taxable compensation amount. A contractor receiving $3,000 worth of USDC on October 5 received $3,000 of income on that date.

Paying in crypto does not eliminate the W-8BEN requirement or the income-source analysis. It only changes how the payment is transmitted. The compliance framework—foreign-source vs. US-source, W-8BEN vs. W-9, 1042-S vs. 1099-NEC—applies exactly the same way.

Compliance checklist for paying international contractors

1. Before the first payment, determine whether the contractor is a US person (W-9) or a foreign person (W-8BEN or W-8BEN-E)
2. For US persons: collect Form W-9; issue 1099-NEC by January 31 if they earn $600+ in the calendar year
3. For foreign persons: collect Form W-8BEN or W-8BEN-E before making any payment; note the form expiration date
4. Determine income source: if the contractor does all work outside the US, the income is foreign-sourced—no withholding, no 1042-S required
5. If any payments are US-sourced: withhold at 30% (or treaty rate if applicable) and plan to file Form 1042-S by March 15 of the following year
6. File Form 1042 (annual withholding return) by March 15 if you have any US-source payments to foreign contractors
7. Update W-8BEN forms before they expire (typically every 3 calendar years)
8. Store all W-8 and W-9 forms for at least 7 years from the date of the last payment they cover

For expat business owners managing both global teams and their own tax position, the guide to building a portable online business covers the full picture of structure, banking, and income across borders.

Getting the paperwork right once protects every payment after that

International contractor compliance is a one-time setup for each contractor relationship. Once you have a valid W-8BEN on file and have confirmed the income source, payments can flow without further withholding or reporting—at least until the form expires. The work-intensive part is the first payment to each contractor, not the ongoing process.

Most remote-first expat businesses are paying foreign contractors for services rendered entirely outside the US, which means no withholding and no 1042-S. The main risk is not having the W-8BEN documented before the first invoice, or sending 1099-NEC to a foreign person who should have received nothing (or a 1042-S if US-source income was involved). A platform like Deel or Mercury Bank for USD disbursements handles the mechanics; your job is to maintain the source documentation.

For the broader picture of how money moves between countries—fees, rails, and settlement times—see the expat money transfer guide.

Sources checked: IRS NRA Withholding; IRS Publication 515 (2026); IRS About Form 1042-S. Platform fees sourced from Deel, Remote.com, and Payoneer pricing pages as of June 2026.

Disclaimer: This article is for general informational purposes and does not constitute legal, tax, or accounting advice. Rules differ based on contractor location, income type, treaty positions, and business structure. Consult a qualified international tax professional for your specific situation.