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Procurement & VendorsGenerated accuracy model review: 2026-05-06
Software License 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
- Total license cost = licenses * annual price per license * (term months / 12) * (1 - discount percent / 100) + support cost + one-time fees. Support cost = discounted license cost * support percent / 100.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Licenses: 250
- Annual Price per License: 420 $/yr
- Contract Term: 36 months
- Discount: 12%
- Support or Maintenance: 18%
- One-Time Fees: $15,000
Expected outputs
- Total License Cost: $342,096.00
- Discounted License Cost: $277,200.00
- Support Cost: $49,896.00
- Effective Annual Cost: $114,032.00
Known limitations
- This is a planning tool, not legal, accounting, sourcing, or tax advice. It does not interpret vendor terms, service levels, or contract risk.
Assumptions
- All pricing, discounts, fees, and contract values are entered by the user.
- Taxes, foreign exchange, service credits, legal terms, and non-price concessions are not inferred.
- Inputs are processed locally in the browser and are not stored by this calculator.
Unit handling
- Licenses accepts numeric values.
- Annual Price per License accepts values in $/yr.
- Contract Term accepts values in months.
- Discount accepts values in %.
- Support or Maintenance accepts values in %.
- One-Time Fees accepts values in $.
- Total License Cost is displayed as currency.
- Discounted License Cost is displayed as currency.
- Support Cost is displayed as currency.
- Effective Annual Cost 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 software-license-cost-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Software License Cost Calculator.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.