Methodology

Every calculator on MoneyMathHQ uses standard, published financial formulas — the same ones used by lenders, actuaries, and finance textbooks. No black boxes, no proprietary scoring.

Results are estimates. Real-world outcomes depend on rates, fees, taxes, and market behavior that change over time. We show conservative defaults and let you edit every assumption.

Each calculator's own page includes a "How this is calculated" section with the exact formula and a worked example, so you can reproduce the number by hand.

MoneyMathHQ is educational. It is not financial, tax, or legal advice. Talk to a qualified professional before making significant decisions.