Tax library · November 2, 2026

US Tax Residency: Organising Records for the Substantial Presence Test

A substantial presence test review is easier when the travel facts are organised before anyone starts counting. The test can make an individual a US resident for federal income tax purposes even when the person does not have a green card. It can also produce a misleading result if exempt days, travel dates or earlier years are handled incorrectly. The practical first task is therefore an evidence exercise, followed by the tax analysis.

This article explains how to prepare substantial presence test records for an adviser. It focuses on the ordinary calendar, supporting documents and questions that determine which days enter the calculation. It does not decide immigration status or authorise any activity in the United States. The IRS substantial presence guidance should be read alongside the current Publication 519 when applying the rules to a particular year.

Separate immigration status from tax residence

Your visa describes an immigration classification; it is not a complete federal income tax residency calculation. Someone admitted as a visitor can accumulate counted days. Someone in a category that may qualify for excluded days must still establish that the relevant conditions and limits are satisfied. “Exempt individual” in this context is a technical day-counting term, not a promise that all income is exempt from US tax.

Prepare a chronology showing the visa or other status for each visit and any change during the year. Include dates of applications, approvals and other events your adviser requests. A change in immigration circumstances can raise separate questions about the beginning or ending of tax residency. Do not choose a tax return first and then adjust the calendar to make it fit. Ask the adviser to explain the residency conclusion and the period it covers before discussing the reporting of particular income.

Build one calendar across three years

The general test considers presence in the current year and weighted presence in the two preceding years. It includes a current-year minimum and a three-year weighted total; the official IRS page explains the calculation. Your records should therefore cover the relevant three-year window, not only the most recent trip. Use one row for each continuous visit with arrival, departure, location, immigration category and the source of the dates.

Download your available travel history and compare it with passport stamps, flight confirmations, accommodation records and your own diary. None of these sources should be treated as infallible in isolation. An altered itinerary may show a booked flight that was never taken. A passport stamp may be hard to read or absent. Where sources disagree, note the discrepancy and locate corroborating evidence. Resolving a one-day difference is much easier while memories and booking records are still available.

Record days before applying exclusions

Begin with the actual physical-presence calendar and then create a separate column for proposed exclusions. This preserves a clear audit trail. If you simply delete days from the starting schedule, a reviewer cannot see what was removed or why. Counted and excluded days should reconcile back to the underlying travel record rather than becoming two unrelated lists.

Arrival and departure days need attention because presence for part of a day can matter under the general rule. Short trips, stopovers, cross-border commuting and time in US territories can involve specific rules. Describe what happened instead of labelling every airport connection “transit.” Include the itinerary, duration and endpoints where a transit exception is being considered. For business travellers with many visits, a spreadsheet with documentary references is usually more useful than a narrative saying that visits were “only occasional.”

Support exempt-day positions with the right facts

Students, teachers, trainees, certain government-related individuals and some other defined categories may have relevant exclusions. The category alone is not the entire test. Previous years in an exempt classification, compliance with the applicable status and other conditions can matter. A student should therefore give the preparer earlier US education and visa history rather than only the current enrolment letter.

Where Form 8843 is relevant, treat it as an actual filing question. The IRS explains that exclusion of certain days can require a timely statement, even where an income tax return is not otherwise required. Do not assume a university or employer filed it for you. Obtain copies of earlier statements and filing evidence if you have them. A preparer reviewing a missed statement needs the dates and facts, not an unsupported assertion that the person was automatically exempt throughout their stay.

Keep closer-connection evidence separate

A person who satisfies the weighted test may still need analysis of a closer-connection exception or a treaty position. These are not interchangeable shortcuts, and their conditions differ. For closer connection, the facts can include actual current-year US presence, a foreign tax home, personal and economic connections, and steps relating to permanent residence. Discuss eligibility and the required Form 8840 filing rather than assuming that owning a home abroad is decisive.

Useful evidence may include foreign housing, family arrangements, work location, business operations, tax filings and the pattern of everyday life. Organise it into a factual summary with dates. The aim is not to manufacture a list of favourable connections while concealing contrary facts. Tell the adviser about a US home, employment, family or applications that may affect the conclusion. Balanced records allow a defensible review and help distinguish a closer-connection claim from a treaty residence claim requiring different disclosures.

A hypothetical calculation file

Imagine an overseas business owner who spent several months in the United States in each of three years. The owner initially counts only the current year’s days and concludes that fewer than six months means nonresident status. That conclusion ignores the weighted prior-year component. The preparer instead creates a three-year schedule and applies the official formula to the eligible days in each year.

The owner also describes a short airport stop and a period of illness as excluded days. The preparer requests itineraries and medical circumstances rather than accepting the labels. After reviewing those facts, the adviser considers whether any exception applies and whether a required statement was filed. The example deliberately gives no final resident or nonresident answer: its purpose is to show that correct counting, substantiated exclusions and exception analysis are distinct stages. A spreadsheet total without those stages is not a complete residency determination.

Identify income consequences after the calendar review

Once residency is established, ask how it affects the income you must disclose. A resident individual can have a broader federal reporting scope than a nonresident, and a change during the year can require additional analysis. Prepare a worldwide income inventory even if you are unsure which items will ultimately be reportable. It is safer to give the preparer the facts than to omit overseas accounts because no US tax form was issued.

Entity ownership, rental property, partnership interests and foreign accounts can create further reporting questions. The residency calculation does not by itself settle those obligations. Similarly, a conclusion for federal income tax purposes does not automatically decide state tax residency. Give the preparer the states in which you lived, worked or maintained a home, and ask whether a separate state review is included. Keeping these layers distinct prevents a technically correct day count from being used for an unrelated legal conclusion.

Improve the record as the year progresses

Maintain the calendar monthly rather than rebuilding it at filing time. Save itinerary changes and mark when a planned trip was cancelled. A simple note explaining an overnight connection or unexpected extended stay can be more useful than a perfect-looking retrospective spreadsheet with no supporting evidence. Where a medical event affects departure, keep the chronology and supporting documents securely because the relevant exception has specific requirements.

Before another long visit, ask an adviser to project the federal residency calculation using confirmed prior-year days and reasonable travel plans. A projection is a planning tool, not a guarantee that future facts will match it. Revisit the calculation when travel changes. Do not rely on a social-media rule that a particular number of days is always safe: different tests, exclusions and state rules can produce different consequences. Advance review gives you time to gather information without trying to alter historical facts after a deadline.

Preserve the calculation you actually used

When the review is complete, retain the final calendar, the counted-day calculation and an explanation of each exclusion. Keep rejected or superseded drafts separate so next year’s preparer does not unknowingly reuse an earlier total. If a required statement was filed, save the submitted version and the evidence of submission with the year it covers.

A future review should be able to distinguish confirmed travel facts from assumptions that were unresolved at filing. Ask the adviser to identify those unresolved points expressly. That record is more useful than a single spreadsheet cell marked resident or nonresident because it explains how the conclusion was reached and which change in facts might require a fresh analysis.

Questions to bring to a residency appointment

Ask which years the adviser needs, which days remain disputed and what evidence would resolve them. Ask whether the green card test, first-year choice, dual-status treatment or treaty residence needs separate consideration. Request a list of any required statements and the filing timetable. Confirm whether the engagement includes reviewing earlier years if the new calendar suggests a previous return may have used the wrong status.

Can a B visa make every day exempt? It does not create a blanket exempt-individual rule for the substantial presence test. Does an ITIN prove nonresident status? It is an identification number, not a substitute for the residency analysis. For an organised review, contact Litmus with the years, visa categories and approximate travel pattern involved. Provide detailed identity and travel documents only through an agreed secure process. General guidance cannot replace a conclusion based on your full circumstances.