Form 1040-NR: Who Must File, When It Is Due, and the 30 Percent FDAP Rate

Two situations pull a nonresident alien into Form 1040-NR: being engaged in, or treated as engaged in, a trade or business in the United States during the year, or holding U.S. source income where the tax liability was not satisfied by withholding at the source.^[2]

The second trigger is the one people misread. When the payer withheld the full 30 percent on a dividend or a royalty, the liability is satisfied and no return is compelled. Filing is still the only route to a refund of overwithheld tax, and the only way to take deductions or credits the payer never applied. Nonresident aliens are taxed on U.S. source income, not on worldwide income, which is the largest single difference from a resident return. Representatives and fiduciaries carry the same duty as the taxpayer. Our individual tax return preparation work covers these returns for South Florida clients each season.

An alien is anyone who is neither a U.S. citizen nor a U.S. national, and residency for tax purposes then turns on two tests. A person who has passed neither the green card test nor the substantial presence test is a nonresident alien.^[1] The green card test asks whether lawful permanent resident status was held at any point in the year. The substantial presence test counts days of physical presence in the country across the current year and the two years before it, on a weighted basis.

Status is decided year by year, and it is not tied to a visa category or a mailing address. Someone who moves to South Florida partway through a year often ends up with a dual status year rather than a clean nonresident return. Getting that call wrong is expensive in both directions: a resident filing Form 1040-NR omits worldwide income, and a nonresident filing Form 1040 pays U.S. tax on income the United States never had a claim to.

Often, yes. A nonresident alien student, teacher, or trainee temporarily present on one of those visas is treated as engaged in a U.S. trade or business, so the first filing trigger is met by status alone: "you are considered engaged in a trade or business in the United States."^[3] The return itself is not automatic, though. The IRS conditions it on having income that is subject to tax, and points to wages, tips, scholarship and fellowship grants, and dividends as the usual examples.^[3]

That distinction matters on a campus. Grant money applied to tuition behaves differently from grant money covering living costs, and a stipend paid for teaching or research is compensation for services. Many of these filers hold no Social Security number, which makes a taxpayer identification number the prerequisite for filing at all. That application is what our ITIN application help covers, and the Miami ITIN application guide walks through the documents and the timing.

Income subject to U.S. tax divides into two buckets, and the treatment differs sharply between them. Effectively connected income (ECI) is income tied to a trade or business carried on in the United States. After allowable deductions it is taxed at graduated rates, and the IRS is explicit that "These are the same rates that apply to U.S. citizens and residents."^[4] ECI belongs on page one of the return.

FDAP income covers fixed, determinable, annual, or periodical U.S. source amounts: dividends, interest, rents, royalties, and similar passive receipts that are not effectively connected. It is taxed at a flat 30 percent, and "no deductions are allowed against such income."^[4] Nothing is netted and there are no brackets to fall into. FDAP that is not effectively connected is reported on Schedule NEC rather than on page one.^[4]

One consequence surprises property owners. Rental income from U.S. real property is FDAP by default, taxed on the gross rent with no deduction for mortgage interest, taxes, insurance, or depreciation, unless the owner elects to treat it as effectively connected and files a true and accurate return to claim those deductions.

For many recipients, yes. The flat rate applies unless a lower treaty rate qualifies, which is written into the rule itself.^[4] Treaty relief is granular rather than global: a treaty may cut the rate on dividends while leaving royalties where they are, and the United States has no treaty at all with several countries whose nationals invest heavily in South Florida.

Two things have to line up for the reduced rate to survive review. The payer needs a valid withholding certificate on file before the money moves, which is the ground covered by the guide to the W-8BEN and W-8BEN-E for foreign owners, and the position has to be disclosed on the return itself. A treaty claim raised for the first time in an audit, with no certificate and no disclosure, is the hardest version of this argument to win. Nonresidents who hold U.S. rental property or a U.S. LLC usually need the entity filings and the personal return coordinated, which is what our foreign-owned LLC tax filing service and our foreign-owned U.S. entity tax services cover.

The deadline follows the kind of income, not where the filer lives. An employee whose wages were subject to U.S. income tax withholding, or anyone with a U.S. office or place of business, files by the 15th day of the 4th month after the tax year closes. A nonresident with neither gets the 15th day of the 6th month.^[5]

An automatic extension of time to file is available on Form 4868, but it has to be requested by the regular due date of the return and it moves the paperwork deadline only.^[5] Tax owed is still due on the original date, with interest running from there. The later June date is the one most often missed, because the filers it applies to are exactly the ones with no U.S. payroll department sending reminders.

Late filing costs a nonresident far more than it costs a resident, and the mechanism is not the usual penalty. To get the benefit of allowable deductions or credits, the filer has to submit a true and accurate return on time, and for this purpose a return counts as timely only if it arrives within 16 months of the due date. Past that point the IRS "has the right to deny deductions and credits on tax returns filed more than 16 months after the due dates of the returns."^[6]

Read that against the FDAP and ECI rules and the exposure is obvious. Deny the deductions on rental income and the tax lands on gross rent rather than on profit, with no offset for mortgage interest or depreciation. A nonresident who let several years slide can face a bill with almost no relationship to what the property earned. Filing those years before the window closes is preparation work; arguing about them afterward is IRS representation.

No, and the rule is flat: a nonresident of the United States "cannot claim the standard deduction."^[7] The only exception the IRS names is for students and business apprentices from India, who may be eligible to claim it under Article 21 of the U.S.A.-India Income Tax Treaty.^[7]

What remains is itemized deductions, and only those connected with effectively connected income: state and local income taxes, gifts to U.S. charities, casualty and theft losses from a federally declared disaster, and a short list of others. Certain adjustments to gross income also survive for nonresidents who qualify, among them the student loan interest deduction, the self-employed health insurance deduction, and contributions to a retirement plan for the self-employed. A personal exemption deduction is not available for the filer, a spouse, or dependents.

A nonresident who receives effectively connected income can reach a real, if narrowed, set of credits: the foreign tax credit, the child and dependent care credit, the retirement savings contributions credit, the child tax credit, the credit for other dependents, the adoption credit, and the credit for prior-year minimum tax.^[9] Each one carries its own eligibility rules, and several turn on which taxpayer identification numbers appear on the return and when they were issued.

The education and earned income credits run the other way. A nonresident for any part of the year is generally shut out of the Earned Income Tax Credit and of the education credits the IRS names, the Hope Credit and the Lifetime Learning Credit.^[9] The student loan interest adjustment survives, which is a small consolation for a graduate student but a real one. Credits are also where a wrongly determined residency status shows up as lost money rather than as a notice, because nobody restores them automatically.

The structural rules above have held steady: the flat 30 percent on FDAP income, the bar on the standard deduction, the filing statuses, and the two due dates are all unchanged. Movement has come at the edges, from the deductions added by recent legislation and the guidance that followed them.

The IRS has posted clarifications to the Form 1040-NR instructions after the filing season opened, and it flags on the form's own page that an amended return may be needed when the deduction for qualified tips, the provision widely called no tax on tips, applies to occupations that customarily and regularly receive tips.^[10]

The takeaway for anyone who has already filed is not to treat the original return as final. A tipped worker on a visa, or anyone who filed early against instructions that were later clarified, may be holding a deduction that was never claimed.

South Florida produces nonresident returns in a few recognizable shapes: a foreign investor with a rental condo, a family that spends part of each year here, the owner of a U.S. LLC trading with a business back home, a student on a campus stipend. The failures are rarely exotic. They are a missing taxpayer identification number, a June deadline nobody calendared, a treaty position taken but never disclosed, and rental income reported gross because the election was never made.

When a U.S. property sale enters the picture, withholding at closing is a separate regime with its own refund path, which is where FIRPTA withholding help comes in. For everything else the order of operations holds: settle the residency determination, get the identification number in place, then file the return that status actually requires.