Your First US Tax Return: The Newcomer's Complete Primer

How the American tax system actually works

The US runs on withholding plus reconciliation. Through the year, your employer withholds estimated tax from each paycheck based on the Form W-4 you filled in at hiring. After the year ends, you file a return that calculates your actual tax; if withholding exceeded it, you get a refund, and if it fell short, you pay the difference. Filing is not optional paperwork — it is how the system settles the year.

Three layers can apply: federal income tax (everyone), state income tax (most states — each with its own return), and in a few places local tax. Social Security and Medicare (FICA) are withheld separately and are not settled through your return — though as covered below, many students should not be paying FICA at all.

One mindset shift from India: there is no employer-issued 'Form 16 means it's done' equivalent. Your W-2 is an information form, not a completed filing. You, the taxpayer, file the return.

First question: resident or nonresident?

The IRS decides your status with two tests. The green-card test: lawful permanent residents are tax residents. The substantial presence test: a day-count formula across three calendar years — all your US days this year, one-third of last year's, one-sixth of the year before; if you were present at least 31 days this year and the weighted total reaches 183, you are a tax resident. Tax residents report worldwide income on Form 1040; nonresidents report US-source income on Form 1040-NR.

Two newcomer wrinkles matter enormously. First: F-1 and J-1 students are 'exempt individuals' whose US days do not count toward substantial presence for their first five calendar years — so most students are nonresidents filing 1040-NR, plus Form 8843 even with zero income. Second: many mid-year arrivals are dual-status — nonresident for part of the year, resident for the rest — a filing complex enough that professional help usually pays for itself once. IRS Publication 519 is the official reference for all of this.

Getting this wrong is the classic first-year error: a student filing a resident return through popular software (wrong form, wrongly claimed credits) or a new H-1B filing nonresident when the day-count made them resident. Both usually mean amended returns later.

The forms you will actually touch

Coming to you in January–February: Form W-2 from each employer (wages and withholding), Form 1099-INT from banks (interest), consolidated 1099s from brokerages (dividends, sales), Form 1098-T from a university if you paid US tuition. These also go to the IRS — the matching is automatic, so returns that omit a form the IRS already has generate letters.

Filed by you: Form 1040 (residents) or 1040-NR (nonresidents); Form 8843 for exempt individuals; state return where applicable; and for residents with foreign accounts, the FBAR and possibly Form 8938 (see our NRI Tax 101 guide). If you are married, residents choose between joint and separate filing; nonresident rules differ — check before assuming Indian-style clubbing or US-style joint filing applies.

Identification: you file with your SSN, or with an ITIN if you are not SSN-eligible (a spouse without work authorization is the common case — the ITIN application can be submitted with the return itself).

The paperwork year, on a calendar

January: employers must issue W-2s; information forms arrive through February. February–April: filing season — federal return, then state where applicable. Mid-April: the federal deadline (the exact date shifts slightly year to year around April 15 — confirm on IRS.gov). Extensions extend filing time, never payment: tax owed is still due at the deadline.

If you kept Indian accounts or income, two more layers apply once you are a tax resident: worldwide income reporting (Indian FD and savings interest is US-taxable even after Indian TDS — the India–US treaty prevents double taxation through foreign tax credits, not through silence), and the FBAR/FATCA disclosure regimes covered in NRI Tax 101. The disclosure penalties are far out of proportion to the accounts involved; this is the layer first-year filers most often miss.

Refunds arrive fastest with e-filing and direct deposit. If you owe, the IRS offers payment plans — owing money you cannot immediately pay is a solvable problem; not filing is the expensive mistake.

Your W-4: the form that sets your paycheck

On your first day of work you complete Form W-4, which tells your employer how much federal tax to withhold from each paycheck. It is not a tax return and it does not fix your final tax — it only calibrates the monthly estimate. Fill it accurately (filing status, dependents, other income) and your April outcome lands near zero; leave it wrong and you either lend the government an interest-free loan all year or face a surprise bill.

Newcomers commonly need to revisit the W-4 after big changes: a spouse starting or stopping work, a second job, or moving states. The IRS provides a free online Tax Withholding Estimator that maps your situation to the right W-4 entries — running it once mid-year, after your first few pay stubs, is a fifteen-minute check that prevents most April surprises. Nonresident aliens have special W-4 instructions (Publication 519 covers them), which is another reason to know your residency status early.

State taxes: the second return

Most states levy their own income tax with their own forms, rates, deadlines and rules — and your employer withholds state tax alongside federal. A handful of states have no income tax at all. Your state return is filed separately from the federal one, usually around the same deadline, and most tax software prepares both together.

Two situations complicate the state layer for newcomers. Moving between states mid-year usually means part-year returns in each state, allocating income by where you earned it. And working in one state while living in another (common around metropolitan borders) can mean filing in both, with credits preventing double taxation. Neither is exotic — millions of Americans file this way — but each is a detail to hand your software or preparer accurately, because states do enforce their filing rules.

Remember also that states are not parties to the India–US tax treaty: a treaty benefit that works federally may not exist on the state return. Check your state's revenue department site, which the IRS state-links page points to.

Students and FICA: the refund nobody claims

Nonresident F-1 students (generally your first five calendar years) are exempt from FICA — Social Security and Medicare withholding — on authorized employment including OPT. Employers unfamiliar with the rule sometimes withhold it anyway, quietly costing you several percent of every paycheck.

Check your pay stub: if Social Security and Medicare lines show withholding and you are a nonresident student, first ask the employer's payroll to stop and refund it. If they will not, the IRS has a documented refund claim process (Form 843 route). Keep your I-20, EAD and pay stubs as evidence. Once you become a tax resident, FICA applies like anyone else.

Free help — and the frauds to dodge

Official free options: IRS Free File (guided commercial software for filers under the income limit published each season on IRS.gov), Free File Fillable Forms (electronic federal forms at any income, without guidance), and the VITA program — IRS-certified volunteers who prepare returns free for qualifying taxpayers. One program you may still read about, IRS Direct File, was discontinued after the 2025 filing season and is no longer available. University international offices typically license nonresident-specific software for students; use it rather than resident tools that file the wrong form. Links for all of these are on IRS.gov — never pay for what these provide free.

The fraud patterns are seasonal and predictable. 'Ghost preparers' who prepare returns but refuse to sign them (a paid preparer must sign and include their PTIN — the IRS warns about this every season). Anyone promising a specific refund before seeing your documents. And impersonation: the IRS initiates contact by postal letter — not by threatening phone calls, texts, WhatsApp messages, or demands for payment by gift card or wire. Those calls specifically target immigrant communities; hang up.

If you use a paid preparer for a cross-border year, choose one who signs, asks for your immigration timeline, and can say the words 'dual-status' and 'Form 8843' without looking them up.

Your first-year document folder

Collect as the year runs, not in April: every W-2 and 1099, final pay stubs (to reconcile against the W-2), Form 1098-T if you paid tuition, receipts for anything state-deductible, your I-94 travel history and passport stamps (they prove the day-counts residency turns on), and the Indian side — account statements with peak balances, TDS certificates, and records for any Indian rent or interest.

Keep filed returns forever — you will reach for them at green-card stages, loan applications, and any residency question either country ever raises. First-year filers also face the software-versus-professional decision: dual-status years, treaty claims and FBAR-level foreign accounts are the three flags that justify a cross-border preparer once; plain single-status years file cleanly through the IRS free options.

First-year questions everyone asks

'I earned nothing — do I still file anything?' If you are an exempt-individual student, yes: Form 8843 is required even with zero income. It is short, and skipping it muddies your exempt-year record.

'My spouse doesn't work and has no SSN — what do we do?' Apply for an ITIN for them; the application (Form W-7) can go in with your return. Whether you can file jointly depends on your residency status and elections — this is a common professional-help question in year one.

'India already taxed my FD interest — do I report it again?' If you are a US tax resident, yes: report it and claim the foreign tax credit. Reporting is what prevents double taxation; silence is what creates penalties.

'I forgot something on the return I filed.' Amended returns exist for exactly this (Form 1040-X federally). Fix it when you find it — voluntarily amended returns are routine; discovered omissions are not.

'Do I really need to keep all this paper?' Keep the returns themselves permanently and supporting documents for several years (the IRS publishes recordkeeping periods). In practice, one labeled folder per tax year — scanned to cloud storage — settles the question forever.