Simple Interest

Calculating simple interest is a snap with this Formula Solver. Learn how to find the interest using the principal, number of interest periods, and interest rate. Use your own values to check your homework! Continue reading

Compound Interest Made Simple

Compound interest is the method of finding interest where interest is charged on the principal as well as the interest already accumulated. Review a simpler method for finding compound interest with this tutorial. Continue reading

Compound Interest

Calculating compound interest, as used in mortages, is now much easier. Learn how to find the interest using the principal, number of compounding periods, and interest rate. Use your own values for an added bonus! Continue reading

Compound Interest: Bottomless Worksheet

Use this Bottomless Worksheet to get endless practice on calculating compound interest from the principal, number of periods, and interest rate. Ten new problems to solve, a printed copy, and an answer sheet are all only a click away. Continue reading

About Interest Rates

The topic of interest rates are more complicated than you might think. This tutorial covers the relevant terminology, including APR, APY, and the yield curve. Continue reading