About the CD Calculator
A certificate of deposit (CD), or fixed-term deposit, pays a guaranteed rate if you leave the money for the whole term. Banks quote APY, which already includes compounding, so the interest is deposit × ((1 + APY)^(years) − 1).
Withdrawing early usually costs several months of interest. In the US CDs are FDIC-insured up to $250,000 per depositor per bank.
