First-Year Choice and Dual-Status Return Guide for International Founders (2025-2026)
Nonresident return flow (Form 1040-NR)
How a nonresident individual reports U.S.-source income to the IRS.
Classify the income
Effectively connected (ECI) vs. fixed/determinable (FDAP).
Gather U.S.-source documents
1042-S, K-1, or other statements of U.S. income.
Prepare Form 1040-NR
ECI on the main form; FDAP on Schedule NEC.
File and reconcile withholding
Credit amounts already withheld at source.
Key Takeaways
- The first-year choice can create partial-year U.S. residency before the following year's substantial presence test is met.
- The rule depends on a 31-day consecutive presence period and a 75% presence test through year-end.
- A detailed signed statement is part of the election mechanics.
- The choice should be modeled against the taxpayer's worldwide income, not made automatically.
The first-year choice creates a partial-year resident period before the usual residency test catches up
Publication 519 allows an individual to choose part-year U.S. residency if they were not a resident in the current or prior year, but become a resident under the substantial presence test in the following year. The rule is built around a concrete presence test: at least 31 consecutive days in the United States during the choice year and presence for at least 75% of the days from the start of that 31-day period through year-end, with up to 5 absence days treated as days of presence.
For founders who arrived late in the year, this rule can change the filing result dramatically. It can pull a slice of post-arrival income into the resident return while leaving the pre-residency period in nonresident territory.
The statement is not optional paperwork
Publication 519 says the taxpayer must attach a statement to Form 1040 or Form 1040-SR making the first-year choice and listing specific facts, including that the taxpayer was not a resident in the prior year, will be a resident under the substantial presence test in the following year, and the relevant dates of U.S. presence and treated absences. The residency starting date becomes the first day of the qualifying 31-day period.
That means the work is not just arithmetic. The file needs travel records, visa chronology, and a clean written statement. If the procedures are not followed, the IRS publication says the individual is treated as a nonresident for the entire choice year unless they can show strong evidence of reasonable compliance efforts.
The election helps only when the partial-year resident result actually improves the tax posture
A first-year choice can be useful when a founder needs resident treatment to claim certain credits, align withholding, or combine the post-arrival period with other resident-year mechanics. It can also create new exposure by bringing more worldwide income into the resident part of the year.
That is why the election should be modeled rather than assumed. The right question is not whether the rule exists. It is whether the part-year resident answer is better than a full-year nonresident answer after looking at foreign salary, U.S. business income, foreign tax credit access, and filing complexity.
Frequently Asked Questions
What is the residency starting date under the first-year choice?
Publication 519 says it is generally the first day of the earliest qualifying 31-day period used to make the choice.
Can a founder make the first-year choice without attaching a statement?
No. Publication 519 requires a statement with specific residency and presence information.
Does the first-year choice make the whole year a resident year?
No. It creates resident treatment beginning on the residency starting date, so the year becomes a dual-status year unless another full-year election applies.
IRS Form 1040 Instructions
Official IRS source on irs.gov
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