Compound interest is interest calculated on the initial principal and also on the accumulated interest of previous periods of a deposit or loan.
 | | Compound Interest | | Compound interest (or compounding interest) is interest calculated on the initial principal and which also includes all of the accumulated interest of previous periods of a deposit or loan. Thought to have originated in 17th century Italy, compound interest can be thought of as "interest on interest," and will make a sum grow at a faster rate than simple interest, which is calculated only on the principal amount. The rate at which compound interest accrues depends on the frequency of compounding such that the higher the number of compounding periods, the greater the compound interest. Thus, the amount of compound interest accrued on $100 compounded at 10% annually will be lower than that on $100 compounded at 5% semi-annually over the same time period. Because the interest-on-interest effect can generate increasingly positive returns based on the initial principal amount, it has sometimes been referred to as the "miracle of compound interest." | | Breaking it Down: | | Compound interest is calculated by multiplying the principal amount by one plus the annual interest rate raised to... | | Read More » | | Related to "Compound Interest" | | | | | | | CONNECT WITH INVESTOPEDIA | | | | | | | |
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