Our methodology

Every PiggyEgg calculator is built on standard, publicly documented financial formulas (for example, monthly-compounding interest or standard loan amortization). Each calculator lists a “last reviewed” date, and formulas are checked for accuracy whenever they're updated.

Neutrality

Where we include affiliate links, they are chosen for the quality of the product first — commission never determines which partner appears, or whether one appears at all. Every page with an affiliate link says so clearly, near the link itself.