You’re a J-1 program sponsor or employer managing J-1 visa holders who earned W-2 wages in the U.S. in 2025. It’s March 2026, tax season is in full swing, and you’re asking: did we file everything correctly? Are our FICA exemptions documented? Will our foreign national employees get refunds or face complications? This guide walks you through the exact steps to verify your 2025 year-end filings are complete, compliant, and defensible—so your J-1 workers can move forward confidently and your organization stays clear of wage and tax reporting errors.

What does a J-1 employer need to verify in a March 2026 review?

By March 2026, your organization must confirm that all 2025 W-2 forms (IRS Form W-2, Wage and Tax Statement) were filed correctly with the Internal Revenue Service, that wage withholding and FICA (Federal Insurance Contributions Act—the payroll tax that funds Social Security and Medicare) exemption claims match your supporting documentation, and that Form 8843 (Statement for Exempt Individuals) was properly completed and provided to J-1 workers who qualified for nonresident alien status. The W-2 is the document your employer sends showing gross wages, federal income tax withheld, Social Security tax, Medicare tax, and other details. A March review ensures nothing fell through the cracks between year-end payroll processing and the IRS filing deadline.

It depends on your J-1 category, prior U.S. time, and treaty country

Not every J-1 worker qualifies for the same tax treatment, and your employer responsibilities change accordingly. If a worker falls into the “student” category J-1 visa class, they can exclude their time in the U.S. from the Substantial Presence Test—the IRS rule that determines whether a foreign national is a nonresident alien or resident alien—for up to 5 calendar years under the right conditions. If they are in the “teacher or trainee” category (which includes interns, trainees, specialists, and camp counselors), the exclusion is typically limited to 2 of the last 6 calendar years, though some circumstances extend it to 4 years. This affects which tax forms they file and how much withholding is appropriate.

Beyond visa category, your worker’s home country may have a tax treaty with the United States that exempts certain wages (like scholarship income or trainee wages) from U.S. Social Security and Medicare taxes. For example, if a worker is from a country with a treaty provision for trainee wages, and they genuinely meet that definition, you may have been required to refund FICA taxes withheld in error—or you would not have withheld them at all if your payroll process caught it early. Your March review must account for these variables so that you can identify whether exemptions were claimed, documented, and executed correctly in 2025.

Where employers commonly get this wrong

The biggest mistake is assuming all J-1 workers need Form 8843 filed and FICA exemption. Many sponsors default every J-1 worker to FICA exemption or Form 8843 status without checking their actual residency under the Substantial Presence Test and visa category. If a worker has been in the U.S. longer than their category allows them to exclude, they’re a resident alien and owe FICA taxes and must file Form 1040, not a nonresident return. Skipping that check means you over-exempted them, undid your own refund liability, and left them filing the wrong form.

The second mistake is conflating FICA exemption with income tax exemption. A J-1 worker can be exempt from Social Security and Medicare taxes under a treaty but still owe U.S. federal income tax. You can’t assume that because someone is “tax-exempt” in popular language, they don’t withhold anything. You need to review each worker’s individual situation—visa category, years in the U.S., home country treaty status, type of wages earned—before settling on what should have been withheld and whether a correction or refund is owed.

Frequently Asked Questions

What’s the deadline for W-2 corrections if I discover a mistake in March 2026?

The IRS deadline to file corrected W-2s (Form W-2-c, Corrected Wage and Tax Statement) generally falls by the end of the calendar year following the error, but don’t wait. If you discover an error—such as incorrect FICA withholding or a missing FICA exemption claim—file the corrected form as soon as possible so the worker can file an accurate or amended return. The sooner you correct it, the sooner your worker can pursue a refund if they over-paid taxes, and the less exposure your organization faces to wage reporting audits.

Do I have to file Form 8843 for every J-1 worker?

No. Form 8843 is only required for individuals who were exempt individuals during the year—typically J-1 nonresident aliens who met the Substantial Presence Test exclusion criteria for their category and had a bona fide nonresident alien status for the full tax year. If a J-1 worker became a resident alien partway through 2025 (because their exclusion period ended), they do not file Form 8843; they file Form 1040 instead. Your payroll and HR records should show who qualifies; if you’re unsure, consult a tax professional who specializes in nonresident aliens.

What do I do if I withheld FICA from a J-1 worker who was treaty-exempt?

You need to issue a corrected W-2 (Form W-2-c) showing zero FICA withholding for that worker and refund any Social Security and Medicare taxes you collected. The worker can then claim the refund on their own tax return or request it directly from the IRS. The exact process depends on how much time has passed and whether your worker has already filed; your payroll system or a tax advisor can help you route the correction correctly.

Who is responsible for proving FICA exemption—me or the worker?

Both, in a sense. Your organization must have documentation on file proving the exemption claim: typically a completed Form W-4 or treaty claim statement, visa documentation, and sometimes a letter from the J-1 program sponsor confirming category and Substantial Presence Test status. The worker should also retain their own copies of visa stamps, DS-2019 forms, and any treaty claim paperwork. In a March review, verify your files contain this evidence; if not, reach out to the worker for copies so you have a complete record in case of IRS questions.

What if a J-1 worker didn’t file a tax return in 2025—does my filing do that for them?

No. Filing a W-2 or Form 8843 is your responsibility as an employer or sponsor; filing an individual tax return (Form 1040, Form 1040-NR, or any other personal return) is the worker’s responsibility. Your filing documents what they earned; their filing determines whether they owe tax, claim refunds, or file under a treaty. If you discover a worker hasn’t filed, you can point them to the calculator or a tax preparer, but you cannot file on their behalf.

Compliance note

This is general information about employer filing responsibilities, not personalized tax or employment law advice. Your organization’s exact obligations depend on your payroll system, state employment rules, J-1 sponsor agreement, and the specific visa history and treaty status of each worker. Consult an employment tax specialist or your J-1 program sponsor for anything beyond a standard wage and FICA review.

By March 2026, your goal is simple: confirm that every 2025 W-2 was filed, FICA exemptions are documented, and Form 8843 filings (if needed) are complete. Run through this checklist, pull your payroll records, and cross-check them against any exemption claims or treaty documentation you have on file. If something’s missing or wrong, correct it now and communicate with your workers so they can file complete and accurate returns. Whatever questions remain about J-1 visa taxes for your foreign national employees, a qualified tax preparer can help each worker verify their own filing and claim any refunds due.