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
Certificate of an officer stating that a sworn statement is genuine stating when, where and before whom the statement was sworn. A jurat commonly appears at the bottom of an affidavit. ...
Primary horizontal support for a structure such as a house. It may be a large piece of wood, stone, iron, or other material that lies across the walls, and serves as support of the ...
location where someone stays on a permanent basis. An example is a home to a family. ...
House made using standardized components that are preassembled on an assembly line in a factory rather than being built from "scratch" on a site. Normally, the prefabricate house is trucked ...
The definition of adjoining properties describes two or more real estate properties, lots, or parcels that shared a boundary. A property that shares a common border with another is ...
A horizontal beam connecting together two rafters supporting the roof. The collar beam is located at the point substantially higher than the wall plate connecting the rafters. The high ...
Also called trust deed. A document that conveys title to a neutral third party during the period in which the mortgage loan is outstanding as collateral for a debt. ...
Any structure projecting from a wall or other vertical element for the purpose of providing support for a weight or other object. ...
Services provide to a parcel of land public utility companies, such as gas, water, electricity. ...
Have a question or comment?
We're here to help.