About DealMathly

DealMathly is a free collection of real estate investment calculators: cap rate, hard money loans, cash on cash return, after-repair value and bridge loans. Each one comes with a plain-English guide that shows the formula, a worked example and the questions investors actually ask.

Who builds it

Muhammad Mubashir Ali is a software and AI engineer who builds the calculators on DealMathly. Every formula is shown on its page and checked against lender documentation and official sources such as the CFPB and the IRS, and every worked example is produced by the same code as the calculator.

How the calculators are checked

• Formulas follow standard industry definitions and are cited to official or primary sources where they exist (for example the CFPB on balloon payments and IRS Publication 527 on rental property).
• The worked examples in each guide are generated by the same code that runs the calculator, so the text and the tool can't disagree.
• Typical market figures (rates, points, cap rates) are given as ranges, never as quotes; your lender's term sheet is what counts.

Corrections

Found a mistake or have a calculator you'd like to see? Email contact@dealmathly.com.