Your first U.S. paycheck can be a bit of a shock once you see how much smaller it is than your gross wages — and the list of deductions doesn’t always explain itself. Understanding what each line actually means takes away most of the confusion. Here’s the plain-language breakdown.

This article is written for J-1 visa holders who had a W-2 job (not a 1099/contract role) and worked more than 3 months in the U.S. If that’s not you, some of this may not apply.

The direct answer: your paycheck deductions generally include federal income tax withholding (an estimate reconciled at filing time), possibly state tax withholding depending on where you work, and — depending on your eligibility — Social Security and Medicare (FICA), which many nonresident J-1 workers are actually exempt from.

Federal income tax withholding

This is an estimate of your federal tax liability, withheld from each paycheck based on the information on your Form W-4. It’s not necessarily the exact amount you’ll owe — the actual reconciliation happens when you file Form 1040-NR, which is where a refund or balance owed gets determined.

State income tax withholding, if applicable

If you’re working in a state with income tax, you’ll likely see a state withholding line too. Some states — including Florida and Texas — have no state income tax at all, so this line simply won’t appear if that’s where you’re working.

Social Security and Medicare (FICA)

These two deductions are often grouped together as “FICA.” Many nonresident J-1 workers are actually exempt from both, depending on visa category and time in the U.S. If you see these withheld and believe you qualify for the exemption, it’s worth raising with your employer’s payroll contact.

Other deductions you might see

• Benefits contributions, if your employer offers and you enrolled in any
• Wage garnishments, which are uncommon but occasionally appear for specific legal reasons
• Voluntary deductions you may have signed up for during onboarding

Why your net pay looks smaller than expected

The gap between your gross wages (what you earned) and net pay (what actually lands in your account) reflects all these deductions combined. Understanding each line individually makes the total gap far less mysterious than it looks at first glance.

What to do if something looks off

If a deduction seems unusually high, unfamiliar, or inconsistent with a prior paycheck, ask your employer’s payroll or HR contact directly rather than assuming it will sort itself out. Catching an error early is far easier than untangling months of accumulated incorrect withholding.

Keeping your pay stubs organized as you go

Save each pay stub as you receive it rather than relying on a single year-end copy. Having the full history makes it easier to spot a pattern — like FICA consistently being withheld when it shouldn’t be — rather than only noticing it once the season is already over.

A quick reference for what each pay stub line typically covers

Most pay stubs share a similar general structure — gross wages, then a series of deductions, then net pay — even though exact formatting varies by employer and payroll provider. Once you understand the general categories (federal tax, possibly state tax, possibly FICA, and any other benefits or deductions), unfamiliar formatting on a specific pay stub becomes much easier to interpret.

What to do if your specific pay stub format is confusing

If your employer’s pay stub layout doesn’t clearly separate these categories, ask your payroll or HR contact to walk you through it once, early in your placement. A five-minute conversation on day one is far more useful than trying to decode a confusing pay stub format on your own months later.

Comparing your pay stub to your eventual W-2

Your final pay stub of the year and your W-2 should broadly agree on your total wages and withholding, though exact formatting differs between the two documents. If you notice a meaningful discrepancy between them once your W-2 arrives, that’s worth raising with your former employer rather than assuming one document is simply more accurate than the other.

Turning your paycheck details into a real tax picture

Whatever your specific question, the fastest way to a real number for your J-1 visa taxes is running your W-2 through the calculator rather than guessing.

This is general information, not personalized tax advice. Your exact situation depends on your visa history and paperwork — use the calculator for a number based on your own details, and consult a qualified tax preparer for anything beyond a standard return.

Key takeaways

• Federal (and sometimes state) withholding is an estimate, reconciled when you file
• Many nonresident J-1 workers are exempt from FICA — confirm this applies to you
• An unfamiliar deduction is worth a direct question to payroll, not an assumption
• Saving every pay stub along the way makes spotting a pattern much easier