DIRECT ANSWER
What to know first
A person generally meets the substantial presence test for a calendar year after being physically present in the United States for at least 31 days in the current year and 183 weighted days over the current year and prior two years. Count all current-year days, one-third of the preceding year's days, and one-sixth of the second preceding year's days. Excluded days, the closer-connection exception, treaty provisions, green-card status, and residency starting or ending rules can change the result.
Calculate the weighted day count
A day generally counts when the person is physically present in the United States at any time during the day. Keep travel records, passport history, Forms I-94, calendars, employer records, and other contemporaneous support rather than estimating from memory.
| Period | Days included in the weighted total | What to verify |
|---|---|---|
| Current calendar year | All countable U.S. days | At least 31 countable days are required in the current year. |
| First preceding year | One-third of countable U.S. days | Use actual countable days before applying the fraction. |
| Second preceding year | One-sixth of countable U.S. days | Use actual countable days before applying the fraction. |
Identify days that may be excluded
The IRS lists several categories of days that may not count, including certain days in transit, regular commuting from Canada or Mexico, days when a medical condition prevents departure, and days for an exempt individual. In this context, exempt individual describes a day-count category and does not mean the person is exempt from U.S. tax.
Form 8843 may be required to claim excluded days for an exempt individual or a medical condition. Visa type, years previously treated as exempt, substantial compliance, and timely filing can affect the analysis.
- Certain foreign-government-related individuals in qualifying A or G status
- Certain teachers or trainees in qualifying J or Q status
- Certain students in qualifying F, J, M, or Q status
- A professional athlete temporarily present for a charitable sports event
Review exceptions and residency dates after the math
A person who meets the weighted calculation may still qualify for a closer-connection exception if all statutory requirements are met, including limits on current-year presence, a foreign tax home, closer connections, and timely Form 8840 filing. A treaty tie-breaker can involve a different analysis and may require Form 8833 disclosure.
A person can also be a resident for only part of an arrival or departure year. Green-card status, the first-year choice, residency starting and ending dates, a treaty position, and elections involving a spouse can create resident, nonresident, or dual-status filing consequences.
Keep tax residency separate from immigration status
The IRS states that immigration status under U.S. immigration law and residency status under federal tax law are different. A visa category can affect the day count or a tax exception, but this calculation does not grant, extend, or interpret immigration status.
Tavella CPA Group provides tax services, not immigration legal advice. Questions about visas, immigration filings, lawful status, or employment authorization should be directed to an authorized immigration attorney or accredited representative.
AUTHOR
Stefano Tavella, CPA
Stefano Tavella, CPA leads Tavella CPA Group, a cloud-based CPA firm serving individuals and small businesses with tax preparation, planning, notice assistance, and related services.
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