About PiggyMath

PiggyMath provides free, fast and accurate financial calculators for everyday money decisions. No signup, no data collection on your inputs — every calculation runs entirely in your browser and nothing you type is ever sent to a server.

Our calculators use the standard formulas taught in finance — the same amortization and compound-interest math used by banks and lenders — and our tax tools are kept current with official IRS figures. Every tool is reviewed for accuracy.

PiggyMath is an independent website. We are not a lender, broker or financial advisor, and the results shown are estimates for educational purposes.