Verified against official sources — 31 Oct 2026

US Taxes for International Students: Form 8843, 1040-NR, FICA and Tax Treaties, Explained

NEW Published 31 October 2026

Illustration of a student with tax forms, a calculator and a calendar at a desk, in navy and gold

Why almost every F-1 student files something every year — even with no income — how the IRS decides your tax residency, and the Social Security tax exemption many students are owed without knowing it.

Your F-1 visa answers an immigration question. It does not answer your tax question. The Internal Revenue Service (IRS) runs its own residency test, and under it most F-1 students are "nonresident aliens" for tax purposes in their first years in the United States — a status with its own forms and deadlines, and one yearly form, Form 8843, that applies to almost every student whether or not they earned a dollar. This guide follows the IRS's own order: residency first, then who must file what, then the payroll-tax exemption for student jobs, then scholarships and treaties. It is general information drawn only from the IRS — not tax advice; a qualified tax professional is the right place for personal questions.

Quick answer

For tax purposes you are a U.S. resident only if you meet the IRS's green card test or its substantial presence test — and as an F-1 student who substantially complies with your visa, your days generally do not count toward that test while you are an "exempt individual," the position most students are in for their first five calendar years. Two filing duties follow. First, Form 8843: if you exclude your days as an exempt individual, you must file this statement every year — attached to your tax return if you file one, or mailed on its own to the IRS address in its instructions. Second, Form 1040-NR: you must file this nonresident return if you have taxable U.S. income — with no minimum dollar amount triggering the requirement. Wages from authorised student employment are generally exempt from Social Security and Medicare (FICA) taxes while you are a nonresident alien, with an IRS refund route if FICA was withheld anyway. Treaties can change the result for specific income, including for students from India (Section 07).

SECTION 01Your Tax Residency Is Not Your Visa Status

Two systems use the word "resident," and they do not mean the same thing. Immigration law decides whether you may be in the United States; tax law separately decides whether the IRS taxes you as a resident alien or a nonresident alien — and almost everything in this guide flows from that one classification. Publication 519, the IRS's U.S. Tax Guide for Aliens, states the rule: you are a resident alien for tax purposes if you meet either the green card test or the substantial presence test for the calendar year. Students almost never meet the green card test, so the substantial presence test is the one that matters.

RULE — How the substantial presence test counts. You must be physically present in the United States on at least 31 days during the current year, and on at least 183 days during the three-year period including the current year and the two years before it — counting all of this year's days, one-third of last year's, and one-sixth of the year before that. A full-time student is present far more than 183 weighted days, which is why the next rule decides most students' position.

RULE — Students in compliance are "exempt individuals." The IRS lists, among its exempt individual categories, "a student temporarily present in the U.S. under an 'F,' 'J,' 'M,' or 'Q' visa, who substantially complies with the requirements of the visa." Days on which you are an exempt individual do not count toward the test at all. Publication 519 explains substantial compliance: you have not engaged in activities prohibited by U.S. immigration laws that could result in losing your visa status. Despite the name, "exempt individual" does not mean exempt from tax — your days are exempt from the counting.

SECTION 02The Five-Calendar-Year Limit — and the Exception After It

The exemption from day-counting is not unlimited. Publication 519 states the boundary: you will not be an exempt individual as a student if you have been exempt as a teacher, trainee or student for any part of more than five calendar years — unless you both establish that you do not intend to reside permanently in the United States and have substantially complied with your visa requirements. Note the count is calendar years in which you were exempt for any part of the year — a student who arrived in December has used one of the five. Once the exempt years run out, your days start counting, and a long-staying student can become a resident alien for tax purposes, with the payroll consequences Section 05 describes.

RULE — A student-specific exception can preserve nonresident status. The IRS describes a second exception to the test, available only to students, with four requirements that must all be met: no intent to reside permanently in the United States; substantial compliance with the immigration laws and requirements of student status; no steps taken toward becoming a lawful permanent resident; and a closer connection to a foreign country than to the United States, judged on the IRS's regulatory factors. The burden of proving all four is on the student, who claims the exception by attaching Form 8843 to their Form 1040-NR — the form the next section covers, doing a second job.

SECTION 03Form 8843: The Form Almost Every F-1 Student Files

RULE — What Form 8843 is. The IRS's page for the form describes it directly: "If you are an alien individual, file Form 8843 to explain the basis of your claim that you can exclude days present in the United States for purposes of the substantial presence test" because you were an exempt individual. It is a statement, not a tax return — no income is reported on it and no tax is calculated. It backs up Section 01's position: my days do not count because I am an exempt individual student.

RULE — It is required even when no tax return is. The mechanics, as the IRS states them: if you exclude days of presence because you were an exempt individual, you must include Form 8843 with your income tax return — and "if you do not have to file an income tax return, send Form 8843 to the address indicated in the instructions for Form 8843 by the due date for filing an income tax return." Publication 519 gives that standalone address as the Department of the Treasury, Internal Revenue Service Center, Austin, TX 73301-0215, and states Form 8843 must be filed by the due date for filing Form 1040-NR. So if your nonresident position rests on excluding your days as an exempt individual — as virtually every compliant F-1 student's does — Form 8843 is due from you even if you earned nothing and file no return.

RULE — Filing late has a specific cost. The IRS warns: "If you do not timely file Form 8843, you cannot exclude the days you were present in the U.S. as an exempt individual" — putting those days back into the count. A safety valve sits in the same passage: the bar does not apply if you can show, by clear and convincing evidence, that you took reasonable actions to become aware of the requirements and significant steps to comply. Treat it as a rescue provision, not a plan.

SECTION 04When You Also Need Form 1040-NR

Form 8843 is about your days. Form 1040-NR, the U.S. Nonresident Alien Income Tax Return, is about your income. They are often filed together, but either can be due without the other.

RULE — There is no minimum income threshold. The IRS's page for foreign students and scholars states it in one sentence: "There is no minimum dollar amount of income that triggers a filing requirement for a nonresident alien, including a foreign student or a foreign scholar." The same page lists when filing is required: a taxable scholarship or fellowship grant; income partially or totally exempt from tax under a tax treaty; and/or any other income taxable under the Internal Revenue Code. Note the second item — treaty-exempt income still has to be reported on a return. A treaty is a reason to file, not a reason to skip filing.

RULE — When filing is not required. The same page lists the other side: filing is not required by nonresident alien students and scholars whose income is only from foreign sources; from interest income from a U.S. bank, savings and loan, credit union or insurance company, or portfolio interest; from an entirely tax-free scholarship or fellowship grant; and/or from any other income nontaxable under the Internal Revenue Code. A student whose only U.S. financial life is a bank account paying a little interest is the typical case where Form 8843 alone is the year's whole filing.

RULE — Two different deadlines. Publication 519 gives the nonresident calendar: if you are an employee receiving wages subject to U.S. income tax withholding, your return is due by April 15 of the following year; if you do not have wages subject to withholding, you file by June 15. If you cannot file by the due date, Publication 519 points to Form 4868 or the electronic extension options in the Form 1040-NR instructions. A standalone Form 8843 follows the Form 1040-NR due date, so a student with no return works to June 15 for it — re-checking the address and deadline in the current-year Form 8843 instructions, published fresh annually.

SECTION 05FICA: The Social Security and Medicare Exemption on Student Jobs

RULE — The general rule and the student exception. Aliens employed in the United States are in general liable for Social Security and Medicare taxes, and nonresident aliens generally are too, "with certain exceptions based on their nonimmigrant status." The student exception: nonresident alien students in F-1, J-1 or M-1 status — generally nonresident aliens during their first five calendar years — "are exempt from Social Security Tax and Medicare Tax on wages paid to them for services performed within the U.S." Two conditions are built in: the work must be employment U.S. Citizenship and Immigration Services permits for that status, and performed to carry out the purposes of the visa.

RULE — The employment the IRS lists as exempt. The IRS's own list: on-campus student employment up to 20 hours a week (40 hours during summer vacations); off-campus student employment allowed by USCIS; and practical training student employment, on or off campus. It is a list of authorised work. The limits, from the same page: no exemption for spouses and children in F-2, J-2 or M-2 status; for employment USCIS does not allow, or work not closely connected to the purpose of the visa; for students who change to a non-exempt status; or for students who become resident aliens.

RULE — A second, separate student FICA exemption. If your tax residency flips to resident alien after the exempt years, a different provision may still help with a campus job: the "student FICA exemption" under Internal Revenue Code section 3121(b)(10), under which these taxes do not apply to services by a student employed by the school, college or university where they are enrolled at least half-time, the employment being incidental to pursuing a course of study. The IRS stresses its narrowness — off-campus jobs and other employers do not qualify.

RULE — If FICA was withheld in error, there is a refund path. The IRS instructs: "If Social Security or Medicare taxes were withheld in error from pay that is not subject to these taxes, contact the employer who withheld the taxes for a refund." Only if you cannot get a full refund from the employer do you go to the IRS, filing Form 843 together with Form 8316, the form for refund requests for Social Security tax erroneously withheld from a nonresident alien on an F, J or M visa. Employer first, IRS claim second.

SECTION 06Scholarships and Fellowships: The Split That Decides Filing

For students without jobs, the scholarship question usually decides whether a Form 1040-NR is due, and the IRS's student page draws the line by the kind of scholarship, not its size. A taxable scholarship or fellowship grant — the page points to Chapter 1 of Publication 970, Tax Benefits for Education, for what makes a grant taxable — is a listed filing trigger; a grant that is entirely tax-free does not by itself require filing. Many awards sit in between, part tuition and part living costs, which is why a mixed award is a question for your school's tax resources: identify which parts of your funding are taxable, because that classification, not the total, drives the filing duty.

SECTION 07Tax Treaties — and the India Position, Exactly as the IRS Prints It

RULE — What treaties do. The IRS's tax treaties page explains that under U.S. income tax treaties, residents — "not necessarily citizens" — of treaty countries may be eligible to be taxed at a reduced rate or exempt from U.S. income taxes on certain items of U.S.-source income, with rates and exemptions varying among countries and items of income. Where a treaty does not cover a kind of income, or your country has no treaty, the Form 1040-NR instructions govern. One wrinkle, from the same page: many U.S. states tax residents' income, and some honour treaty provisions while some do not — a federal benefit does not automatically settle your state position.

RULE — The India student benefits the IRS publishes. Publication 901, U.S. Tax Treaties, in its India entry under Students, states that an individual who is a resident of India immediately before visiting the United States and who is temporarily here primarily for studying or training is exempt from U.S. income tax on payments from abroad for maintenance, study or training — noting the exemption does not apply to payments borne by a permanent establishment in the United States or paid by a U.S. citizen or resident, or the U.S. Government or its agencies. Publication 901 then describes the treaty's best-known student benefit: if the payments are not exempt under that rule, the individual may be eligible to deduct exemptions for their spouse and dependents and the standard deduction, claimed on Form 1040-NR. Publication 519 states the same benefit from the deduction side: nonresident aliens cannot claim the standard deduction, but a special rule applies to students and business apprentices eligible under Article 21(2) of the United States–India treaty, who can claim it provided they do not claim itemised deductions, and can claim dependents under the same rules as U.S. citizens. Publication 901 closes with the time limit: the benefits last only for a period considered reasonable or customarily required to complete the studying or training.

Two cautions. This guide prints no standard-deduction figure: it is set year by year, read off the current-year Form 1040-NR materials and Publication 519's worksheet for students from India. And treaty benefits are claimed, not automatic — income a treaty exempts still has to be reported on a return. Students from other countries should read their own country's entry in Publication 901.

FAQFrequently Asked Questions

I had no job and no income last year. Do I really have to file anything?

In the position most F-1 students are in, yes — Form 8843. If you exclude your days as an exempt individual, the IRS requires Form 8843 with your tax return or, if you do not have to file a return, sent on its own to the address in the Form 8843 instructions by the income-tax-return due date. It reports no income and calculates no tax; it supports your nonresident position. Whether a Form 1040-NR is also due depends on your income — see the next question.

When do I need Form 1040-NR as well?

When you have taxable income — with no minimum dollar amount triggering the requirement. The IRS lists filing as required for nonresident students and scholars with a taxable scholarship or fellowship grant, with treaty-exempt income (which is still reported), or with any other taxable income. It is not required if your only income is from foreign sources, U.S. bank or similar interest or portfolio interest, or an entirely tax-free scholarship or fellowship.

My campus job withheld Social Security and Medicare tax. Was that right?

Probably not, if you are a nonresident alien F-1 student in authorised student employment — the IRS states such students are exempt from these taxes on wages for services USCIS allows and that carry out the purposes of the visa, listing on-campus employment, USCIS-allowed off-campus employment and practical training. The IRS's fix: ask the employer for a refund first; if you cannot get a full refund there, file Form 843 with Form 8316 and supporting documents with the IRS.

I have been in the United States for six years as a student. Am I still a nonresident for tax?

Not automatically. You stop being an exempt individual once you have been exempt for any part of more than five calendar years, unless you establish that you do not intend to reside permanently in the United States and have substantially complied with your visa requirements. After that your days count toward the test, and the separate student exception — four requirements, including a closer connection to a foreign country and no steps toward permanent residence — may still preserve nonresident status if you can prove all four.

As an Indian student, what treaty benefit can I actually claim?

Two, as the IRS prints them — both set out in Section 07. Publication 901's India entry exempts a resident of India, here temporarily primarily for studying or training, from U.S. income tax on payments from abroad for maintenance, study or training (with stated exceptions). And under Article 21(2) of the U.S.–India treaty, eligible students and business apprentices from India can claim the standard deduction — normally unavailable to nonresident aliens — provided they do not itemise, plus dependents under the same rules as U.S. citizens, on Form 1040-NR. The benefits last only for the period reasonably or customarily required to complete the study or training, and this guide prints no amount: take the current figure from the current-year Form 1040-NR materials.

Editorial note: This AllVisaUpdates guide is general educational information about how the U.S. federal tax system treats international students, based solely on the Internal Revenue Service sources below, checked on 31 October 2026. It is not tax advice, and it does not determine your residency, filing duties or treaty position — those depend on your facts. Forms and amounts change by tax year; work from the current-year versions and consult a qualified tax professional for your own situation. State taxes are a separate system, covered here only by the treaty warning in Section 07.

Official references and verification status

These official references were accessed and checked on 31 October 2026, and this guide's RULE items were verified claim-by-claim against them (verification record in the accompanying sources file). Every source is an Internal Revenue Service page or publication. Two honest limits: the IRS publishes Form 8843 and the relevant publications fresh for each tax year, so addresses, deadlines and amounts must be re-read from the current-year versions before filing. And the IRS's dedicated filing-dates page for nonresident aliens could not be retrieved at its expected address during this check, so the deadlines in Section 04 rest on Publication 519 (2025), Chapter 7.

General educational information, not individualized legal or financial advice. Follow official instructions and consult a qualified tax professional for case-specific questions.

General information only. This guide is based on official sources publicly available and checked on the date shown on this page. Visa rules change, and consular and USCIS officers decide every case on its own facts — nothing here is a confirmation or a guarantee for your individual case, and this is not legal advice. Always confirm the current requirement on the official page linked in this guide before you act, and consider a qualified immigration attorney for your specific situation.