This article is general information, not legal or tax advice. Withholding rules depend on treaty status, where services are actually performed, and individual circumstances. Consult a qualified accountant before setting up international contractor payments.
Paying a contractor in Colombia or Mexico isn't the same transaction as paying one in Ohio, different rails, different currency exposure, and a different set of tax forms. Get this wrong and you're either overpaying in fees, exposing yourself to a documentation gap, or withholding tax you didn't actually need to withhold. Here's how it actually works.
Payment Rails
Four common ways to pay international contractors, each with real tradeoffs:
- International wire transfer: Reliable and widely accepted, but often the most expensive option once you account for both the sending bank's fee and the receiving bank's fee, plus a marked-up exchange rate.
- Dedicated payment platforms (Wise, Payoneer, Deel, and similar): Generally faster and cheaper than traditional wires for recurring payments, with more transparent FX rates, though platform coverage and fees vary by destination country.
- PayPal: Widely available, but often the most expensive on FX spread and per-transaction fees among common options, worth comparing directly before defaulting to it out of convenience.
- Local bank transfer via a payroll/EOR provider: If you're using an Employer of Record, payment typically routes through their infrastructure, this removes the FX and rails question from your plate entirely, at the cost of the provider's own fee structure.
For a one-off payment, the fee difference barely matters. For a recurring monthly payment to the same contractor, the fee and FX spread difference between a wire and a dedicated platform compounds fast, worth actively comparing rather than defaulting to whatever's already set up.
FX Costs: What to Actually Compare
Two separate costs hide inside every international payment: the explicit transaction fee, and the exchange rate spread (the gap between the rate you get and the real mid-market rate). The spread is often the bigger cost and the easier one to overlook, a "no fee" transfer can still cost more overall than a fee-charging platform with a tighter spread. Compare the actual amount that lands in the contractor's account against the mid-market rate at the time of transfer, not just the advertised fee, to see the real cost.
Documentation to Collect: Form W-8BEN
Before paying a foreign contractor, collect a completed IRS Form W-8BEN (for an individual contractor) or W-8BEN-E (for a foreign business entity). This form certifies the contractor's foreign status and, where applicable, claims a reduced withholding rate under a tax treaty between the U.S. and their country. Collect it before the first payment, not after, it's the document that supports your treatment of the payment for IRS purposes if the classification is ever questioned.
Withholding: The 30% Default, and When It Doesn't Apply
Under IRS rules, most types of U.S.-source income paid to a foreign person are subject to a default 30% withholding rate, unless a treaty or other Code provision reduces or eliminates it. The critical question for most international contractor payments is whether the income counts as U.S.-source in the first place. Compensation for personal services is generally sourced to where the services are physically performed, not where the payer is located, so a contractor who performs all their work while physically present in Colombia or Mexico is typically earning foreign-source income, not U.S.-source income, and the NRA withholding rules that apply to U.S.-source payments generally would not apply to that payment.
This distinction, where the work is physically performed, not where the client or the money originates, is the detail that trips up businesses new to international contractor payments. It's also fact-specific: a contractor who splits time between their home country and the U.S., or performs any work while physically in the U.S., can shift some portion of their income into U.S.-source territory. Don't assume your situation is the straightforward case; confirm the sourcing analysis with a qualified accountant, and see IRS guidance on withholding for specific income types and IRS Publication 515 for the fuller rules.
Form 1042-S vs. Form 1099-NEC
A foreign contractor performing services entirely outside the U.S., with no U.S.-source income, generally isn't issued a Form 1099-NEC (that form is for U.S. persons) or a Form 1042-S (that form reports U.S.-source income paid to a foreign person, and applies when there is U.S.-source income to report, whether or not tax was actually withheld). Keep the signed W-8BEN on file as your documentation for why no U.S. reporting form was issued, rather than skipping documentation because "no form was needed."
Currency and Timing
- Pay in a currency the contractor actually wants. Some contractors prefer USD to avoid local currency volatility eating into their pay; others prefer local currency for convenience. Ask, rather than assuming.
- Set a consistent payment schedule and stick to it, currency and banking delays are more disruptive to a contractor's cash flow than to a domestic employee's, since international transfers can take longer to clear.
- Watch for bank holidays in the contractor's country, not just U.S. holidays, when scheduling payments close to a deadline.
The Mistakes That Trigger Compliance Problems
- Paying before collecting a W-8BEN. Get the form in place before the first payment, retroactive documentation is a weaker position if questioned.
- Assuming all foreign contractor payments need 30% withheld. Over-withholding isn't a safe default, it's simply a different, avoidable cost and administrative burden for both sides.
- Assuming no foreign contractor payments ever need withholding. The opposite assumption is just as risky if the contractor performs any work physically inside the U.S.
- Treating a contractor who looks like an employee (fixed hours, exclusive engagement, company equipment) as a simple 1099-style arrangement. Classification risk exists in the cross-border context too, see our guide on 1099 vs. W-2 for Remote LatAm Hires.
FAQ
Do I need to withhold U.S. taxes from a contractor working entirely in Latin America?
Generally no, since compensation for services performed entirely outside the U.S. is typically foreign-source income, not subject to the U.S. withholding rules that apply to U.S.-source payments. Confirm the specifics with a qualified accountant, since the analysis depends on where the work is actually performed.
What happens if I don't collect a W-8BEN?
Without documentation of foreign status, you may not have support for treating the payment as exempt from U.S. withholding and reporting, which can create exposure if the IRS later questions the payment. Collect it before the first payment as standard practice.
Is it cheaper to pay through a payment platform or a traditional wire?
It depends on the destination country and payment volume, but dedicated international payment platforms are frequently cheaper than a traditional bank wire once you account for the full exchange-rate spread, not just the stated fee. Compare the actual landed amount, not the advertised cost.
