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Immigration, Visa & Travel DocumentsGenerated accuracy model review: 2026-05-06
Residency Days Calculator accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- Total residency days = sum of each entered stay period overlap with the target calendar year, using the selected arrival/departure counting assumption. Days above/below threshold = total days minus the user-entered threshold.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Target Year: 2,026
- Stay Periods: 2026-01-10 to 2026-03-10 2026-09-01 to 2026-11-15
- Planning Threshold: 183 days
- Include Arrival and Departure Days: Yes
Expected outputs
- Total Residency Days: 136 days
- Days Above/Below Threshold: -47 days
- Periods Counted: 2
- Planning Status: Below entered threshold
Known limitations
- This calculator does not determine domicile, lawful status, tax residency, continuous residence, exceptional circumstances, treaty positions, or eligibility for immigration benefits.
Assumptions
- The calculator counts the date ranges exactly as entered and does not verify travel records.
- The threshold is user-entered and may not match the rule that applies to a specific person.
- This calculator runs in your browser from the values you enter. It is a planning estimate only, not legal, tax, immigration, or official government advice.
Unit handling
- Target Year accepts numeric values.
- Stay Periods accepts text values.
- Planning Threshold accepts values in days.
- Include Arrival and Departure Days accepts Yes/No values.
- Total Residency Days is displayed in days.
- Days Above/Below Threshold is displayed in days.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Input precision follows configured step values where provided.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current residency-days-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Residency Days Calculator.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.