What is simple interest? Simple interest is calculated solely on the principal, which is the money you deposit into your ...

Most people only think of interest in terms of how high or low a rate is. But understanding how interest is calculated — or how it compounds — is important, too. Using our compound interest ...

Compound interest is when the interest you earn on a balance in a savings or investing account is reinvested, earning you more interest. As a wise man once said, “Money makes money. And the ...

An I bond is a savings bond issued by the US Department of the Treasury. Rates for I bonds issued between May 1, 2025, and October 31, 2025, have a rate of 3.98%.

The best fixed rate for I Bonds was 3.6% and applies to bonds issued from May 2000 through October 2000. Once you add a variable rate of 2.86% on top of that, you'd be getting an annualized rate ...

Since March has 31 days, we can use the accrued interest formula to calculate your interest payable for the month. Accrued interest = 0.000438 × 31 × $3,000 = $40.77 Average daily balance ...