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Investing Formula Verification

27 of the 27 published investing calculators have an automated formula test suite. Each row gives one calculator's passing cases and the kinds of check behind them.

Last updated 16 September 2026

This is the investing section of the formula verification report, which explains what each kind of case tests, how the counts are produced and what they do not prove. Rows run from the largest suite to the smallest; each row's address ends in the calculator's slug, so one calculator's evidence can be linked and cited on its own. The test file behind every row, and the per-kind numbers, are in the machine-readable report.

Every investing calculator, with its case mix

Automated formula-test coverage for the Investing calculators: passing cases and case mix per calculator
CalculatorCasesCase mix
Bitcoin Return Calculator3,84044 independent · 14 golden · 9 boundary · 3,750 property · 23 structural
Crypto Profit Calculator3,84044 independent · 14 golden · 9 boundary · 3,750 property · 23 structural
Portfolio Value Calculator3,84044 independent · 14 golden · 9 boundary · 3,750 property · 23 structural
Weighted Average Expense Ratio Calculator3,84044 independent · 14 golden · 9 boundary · 3,750 property · 23 structural
Dividend Reinvestment Calculator8524 golden · 23 boundary · 16 property · 22 structural
Bond Yield Calculator649 independent · 16 golden · 12 boundary · 15 property · 12 structural
Dividend Yield Calculator649 independent · 16 golden · 12 boundary · 15 property · 12 structural
Annualized Return Calculator561 independent · 14 golden · 5 boundary · 6 property · 30 structural
Expected Return Calculator561 independent · 14 golden · 5 boundary · 6 property · 30 structural
Holding Period Return Calculator561 independent · 14 golden · 5 boundary · 6 property · 30 structural
Maximum Drawdown Calculator561 independent · 14 golden · 5 boundary · 6 property · 30 structural
XIRR Calculator561 independent · 14 golden · 5 boundary · 6 property · 30 structural
Cap Rate Calculator559 independent · 15 golden · 15 boundary · 4 property · 12 structural
NPV Calculator559 independent · 15 golden · 15 boundary · 4 property · 12 structural
Rental Property Calculator559 independent · 15 golden · 15 boundary · 4 property · 12 structural
Gross Rent Multiplier Calculator542 independent · 12 golden · 6 boundary · 4 property · 30 structural
Net Operating Income Calculator542 independent · 12 golden · 6 boundary · 4 property · 30 structural
Rental Yield Calculator542 independent · 12 golden · 6 boundary · 4 property · 30 structural
Vacancy Rate Calculator542 independent · 12 golden · 6 boundary · 4 property · 30 structural
Sharpe Ratio Calculator513 independent · 8 golden · 7 boundary · 3 property · 30 structural
Sortino Ratio Calculator513 independent · 8 golden · 7 boundary · 3 property · 30 structural
Retirement Withdrawal Calculator486 independent · 13 golden · 17 boundary · 8 property · 4 structural
Regular Investment Calculator404 independent · 14 golden · 13 boundary · 7 property · 2 structural
Portfolio Return Calculator399 golden · 6 boundary · 6 property · 18 structural
Investment Calculator3110 independent · 3 golden · 10 property · 8 structural
Real Estate Investment Calculator257 independent · 7 golden · 11 boundary
ROI Calculator148 golden · 1 boundary · 2 property · 3 structural
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Questions about this policy?Published by Calculator Matters (calculatormatters.com). Last reviewed 16 September 2026. Created and maintained by Jay Sudha (about Calculator Matters). These pages are reviewed regularly, and questions are always welcome.
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