Effective Interest Rate
The term effective interest rate is the actual return from a savings account or any investment where you pay interest when considering the effects of compounding costs over time. Through an effective interest rate, you can fully and correctly determine the real percentage rate that you own on a loan’s interest, a credit card, or any other debt type.
An effective interest rate is also referred to as an effective annual interest rate, the annual equivalent rate, or the effective rate.
The Effective Interest Rate Formula:

With:
i = Nominal Interest Rate
n = Number of periods
What does the Effective Interest Rate Mean?
When you look at loans, the way through which they are advertised will give you two types of information. Firstly, we’ll have the nominal interest rate, which doesn’t consider the effects compounding interest or fees have on the financial product. Secondly, and the one we focus on now, the effective interest rate, which gives you the real return paid on savings of the actual cost of a loan because it does take into account the effect fees and compounding interest have on the financial product.
For that exact reason, knowing and understanding what the effective interest rate means is important. Through a proper understanding of the effective interest rate, you can compare offers more accurately to make an informed decision based on the result.
How to Find the Effective Interest Rate?
To adequately explain how to find the effective interest rate from any financial product’s promotional information, we will look at two examples. Firstly, we’ll have Loan A that has a 5% interest rate that’s compounded monthly. Secondly, we’ll have Loan B with a 5.1% interest rate that’s compounded bi-annually.
Both of these loans are advertised with their nominal interest rate. Remember, this is the one that doesn’t take into account the effects fees and compounding interest has on the loan. To calculate the effective interest rate, we’ll use the formula shown above.

While the nominal interest rate for Loan A is smaller than that of Loan B’s, the effective interest rate from Loan B is lower than that of Loan A’s. This occurs because Loan B has fewer compounding times over the course of a year.
Popular Real Estate Terms
Note having more than one maker, if one or more of the makers default on the note, all makers are sued jointly, rather than just one or all, to make restitution ...
Also called an installment sales contract or contract foe feed. A type of creative financing in real estate allowing the seller to finance a buyer by allowing him or her to make a down ...
Depressed or raised framed in portion of a wall, ceiling, or door. A panel board pattern is decorative and gives the effect of a series of highlighted squares or rectangular pieces. ...
Right of a current stockholder to maintain the percentage ownership in a real estate company by purchasing new shares on a proportionate basis before they are issued to the public. It ...
Inverted gable roof design where the two side slope upward from the center to the eaves with a valley in the middle. The roof resembles the wings of a butterfly, hence, the name. ...
The definition of front foot is a person or an entity that has an advantage or has the initiative. It could also be used to suggest that someone is taking an offensive position. Based on ...
The adjudication definition is a legal ruling or judgment used in the justice system when a case is settled or finalized. To define adjudication, we must look at the justice system and how ...
Emotional value of property to the particular person. An example is an owner of a house who is attached to it because his deceased parents lived there. ...
The landing at the bottom and/or top of a stair case providing support for the structure. ...
Have a question or comment?
We're here to help.