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Family, School & ParentingGenerated accuracy model review: 2026-05-06
Childcare Cost 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
- Net monthly cost = max(weekly tuition x weeks per month + registration fees + supplies + backup care - subsidies, 0).
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Weekly Tuition: 320 $/wk
- Weeks per Month: 4.33
- Registration Fees: $75
- Supplies Cost: $40
- Backup Care Cost: $120
- Subsidies or Contributions: $200
Expected outputs
- Estimated Net Monthly Cost: $1,420.60
- Gross Monthly Cost: $1,620.60
- Annualized Net Cost: $17,047.20
- Subsidy Impact: $200.00
Known limitations
- These calculators do not fetch local prices, predict provider changes, model taxes or eligibility rules, or replace professional advice. The result is only as reliable as the assumptions entered.
Assumptions
- All costs, rates, schedules, subsidies, returns, and inflation assumptions are user-entered.
- Calculations are deterministic and run locally in the browser; Calwarden does not upload or store family budget inputs.
- Results are household planning estimates, not professional financial, childcare, education, tax, or legal advice.
Unit handling
- Weekly Tuition accepts values in $/wk.
- Weeks per Month accepts numeric values.
- Registration Fees accepts values in $.
- Supplies Cost accepts values in $.
- Backup Care Cost accepts values in $.
- Subsidies or Contributions accepts values in $.
- Estimated Net Monthly Cost is displayed as currency.
- Gross Monthly Cost is displayed as currency.
- Annualized Net Cost is displayed as currency.
- Subsidy Impact is displayed as currency.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Currency outputs are displayed with standard US dollar formatting.
- Input precision follows configured step values where provided.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current childcare-cost-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Childcare Cost Calculator.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.