1099-NEC vs 1042-S for Payments to Foreign Contractors

When you pay a foreign contractor, the choice between Form 1099-NEC and Form 1042-S comes down to two facts: whether the contractor is a U.S. person for tax purposes, and where the work was performed. Form 1099-NEC is only for U.S. persons (citizens, residents, and resident aliens who give you a W-9). Payments to nonresident aliens for services performed in the United States go on Form 1042-S, with a default 30% withholding under Section 1441.¹² Payments to a nonresident for work done entirely outside the U.S. generally require no federal form at all.

Which Form Applies to Your Contractor

The IRS instructions for Form 1099-NEC state directly that payments to nonresident aliens should be reported on Form 1042-S instead.¹ Three scenarios cover most working situations:

A U.S. person (citizen, resident, or resident alien) gives you a Form W-9. Report on 1099-NEC once total payments for the year reach $2,000 or more. That threshold rose from $600 for tax years beginning after 2025.³
A nonresident alien performs services in the United States. They give you a W-8 form. Report on 1042-S and withhold under Section 1441, regardless of the dollar amount.²
A nonresident alien performs all the work outside the United States. The income is foreign-source. No 1099-NEC, no 1042-S, no withholding.

Resident aliens (green card holders and those meeting the substantial presence test) count as U.S. persons. They provide a W-9 and follow ordinary 1099-NEC rules. Getting the classification wrong hurts in both directions: issuing a 1099-NEC to a nonresident alien means you skipped required withholding, and issuing a 1042-S to a resident alien creates confusion for someone who files a normal 1040.

Where the Work Happens Controls Everything

The Internal Revenue Code sources compensation to the place where the labor is physically performed. Work done inside the United States is U.S.-source income; work done outside is foreign-source.⁴⁵ That single rule drives the reporting decision.

If a nonresident contractor never sets foot in the U.S. during the service period, the payment is foreign-source and generally sits outside U.S. reporting and withholding. Keep the contractor’s W-8BEN on file to document your decision, but no form goes to the IRS.

Split work is where mistakes happen. If a contractor spends three weeks at your U.S. office and nine weeks working from abroad on the same engagement, you allocate the payment. The U.S. portion is subject to withholding and 1042-S reporting; the foreign portion is not. Document how much time the contractor spent in each location, because you carry the burden of proving the allocation if the IRS asks.

Collect the Right Form Before You Pay

The form the contractor gives you determines your entire path. Get it before the first payment goes out.

Form W-8BEN is for individual nonresident aliens. It certifies foreign status and captures a permanent foreign address plus a U.S. or foreign tax identification number.⁶
Form W-8BEN-E is the entity version, used by foreign corporations and other organizations, and it covers both Chapter 3 and FATCA (Chapter 4) status.⁷
Form W-9 is for U.S. persons, including resident aliens. A W-9 in your file means the contractor is a domestic payee and belongs on a 1099-NEC.⁸

No form at all is not a workable answer. Without documentation you cannot establish the contractor’s status, and the rule is to withhold at the full 30% and report on 1042-S. Verify every field, and confirm the form is signed. An incomplete W-8 is treated as no W-8 for withholding purposes.

W-8 Expiration

A Form W-8BEN generally stays valid from the signature date through the last day of the third succeeding calendar year. A form signed on March 15, 2026 expires on December 31, 2029.⁶ If the contractor’s circumstances change earlier (they move to the U.S., they get a green card), they have 30 days to tell you, and you need a new form. Paying on an expired W-8 puts you back in the undocumented bucket at full withholding.

The 30% Withholding Rule

When you pay U.S.-source income to a nonresident alien, you become a withholding agent. The default rate is 30% of the gross payment, deducted before the money reaches the contractor.² On a $10,000 U.S.-source payment, you send $3,000 to the IRS and $7,000 to the contractor. If their actual tax comes in lower, the contractor can file a U.S. return and claim a refund. Your job is to withhold and deposit on time.

The business is personally liable for anything you fail to withhold, plus interest from the original due date. Discovering the shortfall at year-end and paying it before you file Form 1042 can avoid penalties, but the underlying tax liability does not go away.⁹ This is where the stakes diverge from 1099-NEC reporting. A missed 1099-NEC is a reporting penalty. A missed 1042-S withholding is your tax bill.

Treaty-Based Reductions

The U.S. has income tax treaties with many countries, and some reduce or eliminate withholding on service income. To claim a reduced rate, the contractor completes the treaty claim section of the W-8BEN, naming the treaty article and the rate. Review the claim for reasonableness. If the documentation is incomplete or the article does not support the rate, withhold at 30%. The IRS holds you responsible if you grant a treaty reduction the contractor was not entitled to.

FATCA in Brief

Some payments to foreign persons trigger Chapter 4 (FATCA) withholding on top of Chapter 3. When both apply, Chapter 4 goes first, and amounts withheld under Chapter 4 satisfy the Chapter 3 obligation for that payment.¹⁰

Filing Deadlines

The two paths have different due dates, which is a common source of missed filings for businesses handling both:

When March 15 falls on a weekend or legal holiday, the deadline shifts to the next business day. The January 31 deadline for 1099-NEC has no automatic extension.

Electronic Filing

Businesses filing 10 or more information returns of any type in a year must file electronically.³ The count aggregates across form types, so five 1099-NECs and five 1042-S forms put you at the threshold. Financial institutions reporting under Chapter 3 or 4 must file 1042-S electronically regardless of volume.¹³

Two systems handle 2026 filings. The FIRE system is still available but is set for retirement after the 2026 filing season.¹⁴ The IRS replacement is IRIS (Information Returns Intake System), a free web portal that supports manual entry and CSV uploads of up to 100 returns at a time.¹⁵ Either system requires a Transmitter Control Code from the IRS. Anyone still on FIRE should plan a move to IRIS before the 2027 filing season, when FIRE goes away.

Penalties

The IRS assesses separate penalties for failing to file a correct return with the IRS and for failing to give a correct statement to the payee. Both scale with how late the correction arrives:

Up to 30 days late: $60 per return
31 days late through August 1: $130 per return
After August 1, or never filed: $340 per return
Intentional disregard: $680 per return with no annual cap

These amounts apply to both 1099-NEC and 1042-S for 2026.¹⁶ Annual caps limit non-intentional totals, and small businesses with average annual gross receipts of $5 million or less get lower caps.¹⁷ For intentional disregard, the IRS can alternatively impose the greater of $680 or 10% of the amount that should have been reported.

Reporting penalties are small next to the withholding liability itself. Fail to withhold the required 30% on a U.S.-source payment to a nonresident alien and you owe that tax personally, plus interest from the original due date, plus possible penalties. A $50,000 payment where no withholding happened can put your business on the hook for $15,000 in tax alone, before interest and penalties, money the contractor was supposed to pay coming out of your account instead.

1
Internal Revenue Service. Instructions for Forms 1099-MISC and 1099-NEC (04/2025)
2
Office of the Law Revision Counsel. 26 USC 1441 – Withholding of Tax on Nonresident Aliens
3
Internal Revenue Service. Publication 1099 (2026), General Instructions for Certain Information Returns
4
Office of the Law Revision Counsel. 26 USC 861 – Income From Sources Within the United States
5
Office of the Law Revision Counsel. 26 USC 862 – Income From Sources Without the United States
6
Internal Revenue Service. Instructions for Form W-8BEN
7
Internal Revenue Service. About Form W-8 BEN-E, Certificate of Status of Beneficial Owner for United States Tax Withholding and Reporting (Entities)
8
Internal Revenue Service. Form W-9 – Request for Taxpayer Identification Number and Certification
9
eCFR. 26 CFR 1.1441-3 – Determination of Amounts to Be Withheld
10
Internal Revenue Service. Instructions for Form 1042 (2025)
12
Internal Revenue Service. Discussion of Form 1042, Form 1042-S and Form 1042-T
13
Internal Revenue Service. Electronic Reporting of Forms 1042-S
14
Internal Revenue Service. Filing Information Returns Electronically (FIRE)
15
Internal Revenue Service. E-File Information Returns With IRIS
16
Internal Revenue Service. Information Return Penalties
17
Internal Revenue Service. 2026 Instructions for Form 1042-S