Form 1042-S: Do I Really Need to File for My Overseas Worker?

The short answer for most solo LLC owners

If you're paying a remote contractor who lives and works outside the US, and they've signed a W-8BEN, no Form 1042-S required.

The vast majority of solo LLC overseas contractor relationships fall into this category. Skip to the end if you want the checklist confirming you don't have a filing obligation.

When Form 1042-S IS required

You must file Form 1042-S (and withhold 30% unless treaty reduces it) for:

1. Payments to a non-US person (individual or entity)
2. For US-source income
3. Other than wages reported on W-2 for a US employee

What "US-source" means

US-source income, under the sourcing rules:

• Compensation for services: sourced where the service was performed (key rule for contractors)
• Interest on US bank accounts: US-source (though often exempt)
• Dividends from US companies: US-source
• Royalties on US-used property: US-source
• Rents on US real property: US-source

For a remote contractor sitting in Vietnam writing code for your US LLC: services performed in Vietnam. Foreign-source. No 1042-S.

For a contractor who flew to New York for a 3-day project visit: services performed in the US during those 3 days. US-source for that portion. 1042-S territory.

Scenarios compared

Scenario	W-8BEN?	1042-S?	Withhold?
Remote designer in Ukraine, never visits US	Yes	No	No
VA in Philippines, works from home	Yes	No	No
Consultant in Mexico, flies to US for a workshop	Yes	Yes (for workshop portion)	Yes
Foreign royalty payment	Yes	Yes	Maybe (treaty)
Non-resident freelancer who didn't sign W-8BEN	No	Yes (assume worst)	Yes 30%

If you do have to file 1042-S

Due dates:

• Mail Copy B to the recipient: March 15
• File Copy A with the IRS: March 15
• Also file Form 1042 (the tax return for withheld amounts): March 15
• Extension available via Form 7004: to April 15 for 1042, various for 1042-S

Withholding mechanics

Default rate: 30% of the gross payment.

Treaty reduced rate: varies by country and income type. Contractor claims treaty benefit on W-8BEN Line 10. Common reductions:

• Royalties: many treaties reduce to 0–15%
• Dividends: many treaties reduce to 15%
• Services (business profits): often exempt if no US permanent establishment

You withhold at the appropriate rate, remit to IRS (via EFTPS), and report on 1042 and 1042-S.

Penalties

The "services performed outside the US" documentation

For remote workers, keep records showing:

• Contractor's home address (on W-8BEN)
• Invoices indicating work location
• Any communication showing they were in their home country during the work
• Time tracking tools that log location or time zones

You're not required to produce this unless challenged. But if audited, it makes the case obvious.

The checklist to confirm you don't owe 1042-S

Check all of these. If all yes, you don't owe 1042-S filing for this contractor.

1. Contractor is a non-US person (not US citizen or resident alien)
2. Contractor has signed a current W-8BEN (within 3 years)
3. All services were performed physically outside the US
4. The income isn't dividends, royalties, rents, or interest — just services
5. Contractor didn't visit the US and perform any of your work there during the year

If any box is no, dig into the specific situation — may be a 1042-S trigger.

One common edge case: US-based foreign contractor

A contractor who is physically in the US on a visa (student, H-1B, etc.) is typically a US resident for tax purposes and gets a 1099-NEC + a W-9 (not W-8BEN). The "how long they've been here" substantial presence test determines status.

If you're unsure whether your contractor is a US person for tax purposes: ask them to fill out W-9 if they have an SSN/ITIN. If they have neither, they're likely non-US and W-8BEN applies.