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Synthetic export
A result you can inspect and discuss.
This example shows the calculation trail, source and unresolved exceptions—not an official tax-residence determination.
Synthetic example: every date and count below is fictional and provided only to demonstrate the export format.
Current-year days120
Previous-year days120
Two years ago138
Weighted total183.0
Basic gateMet
US-SPT · BASIC DAY TEST
How 183.0 weighted days were calculated
Current year: 120 × 1 = 120.0
Previous year: 120 × ⅓ = 40.0
Two years ago: 138 × ⅙ = 23.0
Scoped result
The basic 31-day and 183 weighted-day gates are met on these synthetic inputs.
ASSUMPTIONS & SOURCE
What still needs review
This sample does not determine exempt-individual days, medical-condition exclusions, a closer-connection exception, treaty treatment, or an official residency start date.
Calculation scope: Synthetic example using the IRS three-year weighting formula. Source reviewed 2026-09-20; this is not a stored rule-history record.