By the time December rolls around, you’re probably focused on holiday plans, not taxes. But a quick year-end review right now could save you hundreds of dollars—or catch a mistake your employer made that costs you refund money. This is especially true if you worked in the U.S. on a J-1 visa, because your tax situation is different from a regular U.S. employee, and tax software built for American citizens often gets it wrong. A few minutes today reviewing what you’ve earned, what’s been withheld, and what your actual tax status is could mean the difference between filing correctly and leaving money on the table when you file.

Should you do a year-end J-1 tax review?

Yes—even if you think your employer handled everything correctly. A year-end review means checking your W-2 (the form your employer sends showing your earnings and tax withholding), your residency status under U.S. tax law, and whether your withholding aligns with what you’ll actually owe. Most J-1 visa holders discover one or more issues when they review: incorrect FICA withholding (Social Security and Medicare taxes that nonresidents typically should not pay), wrong income reported, or confusion about which tax form to file.

It depends on your J-1 category, how long you’ve been here, and your home country

Whether you’re a resident or nonresident alien for tax purposes—which determines the form you file and what income is taxable—depends on three big variables. First, your J-1 category: “student” category J-1s can exclude their time in the U.S. from the residency test for up to 5 calendar years; “teacher, trainee, specialist, camp counselor, or intern” J-1s can exclude up to 2 of the last 6 calendar years (sometimes extendable to 4). Second, your actual time in the U.S. over the past several years, tracked by the Substantial Presence Test. Third, your home country—some countries have tax treaties with the U.S. that affect your filing obligation and what income is taxable.

According to the IRS, “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.” That’s a big change if you’ve been filing Form 1040-NR (the nonresident form) and suddenly qualify as a resident.

The most common mistakes happen in three places

FICA withholding. Many employers withhold Social Security and Medicare taxes from J-1 workers’ paychecks automatically, even though nonresident aliens are generally exempt from these taxes in their first two years. If your W-2 shows FICA withheld, that’s often incorrect—and you might get a refund for it when you file.

Residency status. Some J-1 holders file Form 1040-NR when they should file Form 1040 (resident form), or vice versa. This usually happens because they didn’t check their own status against the Substantial Presence Test, or they assumed all J-1s file the same way. Your correct form depends entirely on your category and time in the U.S., not on your visa type alone.

Income reported on the W-2. Occasionally employers misclassify income or report the wrong amount. Compare your W-2 to your paystubs—if the annual total doesn’t match what you actually earned, contact your employer’s HR department immediately and ask for a correction before tax season starts.

Frequently Asked Questions

What should I check on my W-2?

Check that your name, address, and Social Security number (or ITIN if you have one) are spelled correctly. Verify that the total wages in Box 1 match the sum of your paystubs. Look at Box 4 (Medicare tax withheld) and Box 2 (Social Security withheld)—if you’re a nonresident in your first two years on a J-1, you should generally not pay FICA, so those boxes should be zero. If they’re not, make a note and prepare to claim a refund when you file. Finally, check Box 21 for any state or local taxes withheld, which you’ll need for your state return.

How do I know if I’m a resident or nonresident alien for tax purposes?

The IRS Substantial Presence Test determines this based on your time in the U.S. over a three-year period and your J-1 category. “Student” J-1s get a break—they can exclude their U.S. presence for up to 5 calendar years. “Teacher, trainee, and specialist” J-1s can exclude 2 of the last 6 years (sometimes up to 4). The best way to check yourself is to use the Substantial Presence Test tool at https://j1visataxes.com/substantial-presence-test/, which walks you through the calculation.

When should I start my year-end review?

Ideally, in November or early December, as soon as you can estimate your final earnings for the year and know you won’t work significantly more hours. This gives you time to request a W-2 correction from your employer if needed before they file it with the IRS in January. If you’re still working through December, plan to review as soon as your final paycheck arrives, which is usually before the IRS filing season opens.

What if my employer withheld FICA but I wasn’t supposed to pay it?

File your tax return claiming an exemption from FICA on Form 8843 (the form J-1s use to claim exempt status) and Form 1040-NR. The IRS will refund the FICA that was incorrectly withheld. This is one of the most common refund sources for nonresident J-1s in their first two years.

Do I need to file state taxes too?

That depends on the state where you worked and earned income. Most states tax earned income, but some states have no income tax at all, while others tax at different rates or have special rules for nonresidents. Check your W-2 Box 21 to see if your employer withheld state tax. If your state has income tax and your employer did not withhold, you may owe. If you’re unsure about your state’s rules, contact that state’s department of revenue by name—many have English-language guidance for international workers.

This is general information, not personalized tax advice. Your exact situation depends on your visa history, category, and home country treaty. Use the Tax Calculator to see your own estimated refund based on your real paystubs, and consult a qualified tax preparer if your situation is complex.

A few minutes now reviewing your W-2, checking your residency status, and making sure FICA wasn’t withheld incorrectly could mean hundreds of dollars in your pocket when tax season arrives. Don’t wait until April to discover these issues—start your year-end J-1 tax review today.