Interest Basics
Simple Interest vs Compound Interest
A side-by-side comparison of simple and compound interest, with a 30-year table, formulas and guidance on which one applies to your loan…
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Plain-English guides to simple interest, compound interest, APY, savings growth and inflation — each with worked examples you can check in our calculators.
Compound Interest
What Is Compound Interest?
Compound interest is interest on interest. See how it works year by year, the formula behind it and why time matters more…
Read more: What Is Compound Interest?
Interest Basics
What Is Simple Interest?
Simple interest is charged only on the original amount. Learn the formula, see worked examples for years, months and days, and find…
Read more: What Is Simple Interest?