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Effective Annual Interest Rate

   Also found in: Acronyms, Wikipedia 0.01 sec.
Effective annual interest rate
An annual measure of the time value of money that fully reflects the effects of compounding.

Effective Interest Rate
The interest rate on a debt or debt security that takes into account the effects of compounding. For example, if one has a fixed-income investment such as certificate of deposit that pays 3% in interest each month, the effective interest rate is more than 3% because compounding the interest results in a (slightly) greater principal each month on which the interest rate is calculated. In this example, the effective interest rate rate is calculated thus:

Effective interest rate = (1 + .03/12)^12 - 1 = .0304 = 3.04%, where .03 is the simple interest rate and 12 is the number of times in a year interest is compounded. It is also known as the annual effective rate or the annual equivalent rate. See also: Stated annual interest rate, annual percentage yield.

Effective Annual Interest Rate

What Does Effective Annual Interest Rate Mean?

The annual rate of interest of an investment when compounding occurs more often than once a year. It is calculated as follows:

Investopedia explains Effective Annual Interest Rate

Consider a stated annual rate of 10%. Compounded yearly, this rate will turn $1,000 into $1,100. However, if compounding occurs monthly, $1,000 will grow to $1,104.70 by the end of the year, for an effective annual interest rate of 10.47%. Basically, the effective annual rate is the annual rate of interest that accounts for compounding.

Related Terms:
Annual Percentage Yield
Compounding
Coupon
Fixed-Income Security
Interest Rate



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The effective annual interest rate on an RAL can be quite high, given that the RAL fee is in effect an interest charge for the two- or three-week period that it would otherwise take to receive the refund.
The debt was structured as a $4 million non-interest bearing debenture with a 25% original issue discount, which, if it reaches maturity, equates to an effective annual interest rate of approximately 8% per annum.
Unfortunately, most consumers do not realize they are actually taking out a loan with an effective annual interest rate of up to 700%
 
 
 
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