If you’re a J-1 visa holder who worked in the U.S., you may receive one of two very different tax forms: a W-2 or a 1042-S. Both report income, but they’re used in completely different situations—and using the wrong one on your tax return can cause real problems. This guide walks you through exactly when you’ll get each form, what they mean, and which one matters for your return.

What’s the difference between a W-2 and a 1042-S?

A W-2 is the standard form a regular U.S. employer sends to report wages you earned as an employee, along with taxes withheld from your paycheck. A 1042-S is a special form used only for nonresident aliens and reports scholarship, fellowship, or other specific types of income that come with tax treaty benefits—and usually no federal tax withholding.

The key difference: a W-2 means your employer treated you as a regular employee and likely withheld federal income tax. A 1042-S means your income qualifies for a tax treaty exemption or educational exchange benefit, so your employer didn’t withhold federal tax (though they may have withheld Social Security and Medicare).

When you receive each form—it depends on your J-1 category and work history

Whether you get a W-2 or 1042-S depends on several factors working together. First, your J-1 category matters: if you’re an “exchange visitor” or “trainee,” the IRS has rules about whether certain income qualifies for treaty protection. Second, your prior time in the U.S. affects whether you’re considered a nonresident alien or resident alien under the Substantial Presence Test—a legal calculation that determines your tax residency. Third, your home country may have a tax treaty with the U.S. that allows exemptions.

In most cases, if this is your first time working in the U.S. on a J-1 and you worked through an approved exchange program, your employer should issue a 1042-S for scholarship or stipend income, or a W-2 if you worked as a regular employee and don’t qualify for exemption. If you’ve been in the U.S. for multiple years on previous visas or J-1 assignments, you may be classified as a resident alien and will receive a W-2 only.

Your J-1 sponsor (the program that brought you to the U.S.) and your employer coordinate to decide which form to use. Sometimes they get it wrong, so it’s worth checking your paystubs and asking your employer directly: “Am I being treated as a nonresident alien for tax purposes?”

Common mixups that trip up J-1 workers

Receiving both a W-2 and a 1042-S for the same job. This shouldn’t happen, but it does. If you get both, one is almost always a mistake. Check with your employer about which is correct—usually the 1042-S if you qualified for exemption, or the W-2 if you didn’t.

Assuming a W-2 automatically means you pay federal income tax. A W-2 simply reports what your employer withheld—but you may owe nothing or get a refund depending on your total income, exemptions, and how much was actually held. Nonresident J-1 workers often overpay federal tax and recover it through a refund.

Not checking whether your employer withheld FICA taxes (Social Security and Medicare) on a 1042-S. Even on treaty-exempt income, FICA can still be withheld. This is common and sometimes correct, but if you’re a nonresident and shouldn’t be paying FICA, you may need to request a refund of those taxes on your Form 1040-NR.

Keep reading: start with our complete guide to J-1 visa taxes, see how to file a J-1 tax return step by step, and learn how to claim a J-1 FICA refund if Social Security or Medicare was withheld.

Frequently Asked Questions

If I received a W-2, do I have to file Form 1040 or Form 1040-NR?

It depends on your residency status under the Substantial Presence Test, not the form alone. “J-1 aliens who are U.S. resident aliens for the entire taxable year must report their entire worldwide income on Form 1040, U.S. Individual Income Tax Return, in the same manner as if they were U.S. citizens.” If you’re a nonresident alien, you file Form 1040-NR. To check your own residency status, use the Substantial Presence Test tool at j1visataxes.com/substantial-presence-test/, or run your specific information through the tax calculator for your filing form.

Can my employer issue a 1042-S if I’m a resident alien?

No. A 1042-S is only for nonresident aliens. If you’ve been in the U.S. long enough to become a resident alien under the Substantial Presence Test, your employer must issue a W-2, not a 1042-S. Some employers make this mistake—if you think you should be on a 1042-S but received a W-2, or vice versa, contact your employer’s payroll or HR department to verify your residency classification.

What if my 1042-S shows federal income tax withheld?

This is rare but happens. If you received a 1042-S (meaning you qualified for exemption) but federal tax was withheld, your employer made an error. You should request a corrected 1042-S, or if that’s not possible, file your return accurately and claim the overwithheld amount as a refund on Form 1040-NR, reporting the amount from your original (incorrect) 1042-S in the income section.

I received a W-2 and a 1042-S for different employers—is that okay?

Yes, this is actually normal. One employer may have hired you as a regular employee (W-2), while another paid you through a scholarship or stipend (1042-S). Report both on your tax return—the W-2 goes on Form 1040-NR (or Form 1040 if you’re a resident alien), and the 1042-S income goes in the treaty income section, also on Form 1040-NR. Your total U.S.-earned income from both forms is what determines your refund or tax owed.

Does receiving a 1042-S mean I’m automatically a nonresident alien?

Not quite. A 1042-S is issued because your income qualifies for treaty exemption, and the IRS generally presumes you’re a nonresident at the time it’s issued. However, you must verify this by checking the Substantial Presence Test—if your presence in the U.S. is substantial enough (more than 183 days in the current year, or weighted prior years), you could still be a resident alien even if you received a 1042-S. Always verify your own status before filing.

This is general information, not personalized tax advice. Your exact situation depends on your visa history, J-1 category, prior time in the U.S., and your home country’s tax treaty. Use the calculator for a personalized estimate based on your own W-2 or 1042-S, and consult a qualified tax preparer if anything feels unclear.

The bottom line: a W-2 and a 1042-S are not interchangeable—they report different kinds of income for different types of workers. Whatever form you received, your J-1 tax refund depends on reporting it correctly on the right filing form (1040 or 1040-NR), which is determined by your residency status, not the form your employer issued. Answer a few quick questions in the tax calculator and see your estimated refund based on your own paystubs and situation.