Effective Interest Rate

Definition of "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:

Effective interst 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.

Effective interest rate formula application

 

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.

image of a real estate dictionary page

Have a question or comment?

We're here to help.

*** Your email address will remain confidential.
 

 

Popular Real Estate Terms

Real property located in an excellent area for its designated objective. An example is a restaurant situated near office buildings, on the main boulevard, so it is easy to see, and has ...

legal ruling providing protection to home buyers of defective homes bought from a seller who then sold the contract to a third party. ...

A real estate broker who lists and sells houses or condominiums, as distinguished from a commercial broker who handles business property. ...

Company formed for the purpose of owning securities of one or more real estate corporations and assuming control over their practices and management. The other corporations are generally ...

Percentage of a geographic location's population to the number of persons employable by a basic industry in that area. A basic industry is one that draws income from outside the locality ...

Hollow building block whose dimensions are 8 x 8 x 16. Concrete blocks are widely used in the construction of foundations and outer walls. They provide strength and durability. ...

Compilation of all tax maps of a given tax district that are bound together and kept at the local tax office. The tax book is a public record that may be accessed by an individual for ...

The initial cost of a home plus any expense for final settlement that are not tax deductible plus capital improvements. ...

Every borrower has his own definition of amortization schedule in mind. An amortization schedule is a table that reveals how the debt is going to be paid back and at what cost. For most ...

Popular Real Estate Questions