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Effective Annual Rate Calculator FullScreen

It is a common truth that investments should be made carefully. Sometimes, people who do not have an impressive experience in investing money have the intention to try and earn.

EAR Calculator


EAR Calculator Results
Effective Annual Rate: 0.000%
Several Payment Frequencies
Pay Period Type Result
Semi-Annually (2 payments) 0.000%
Quarterly (4 payments) 0.000%
Monthly (12 payments) 0.000%
Weekly (52 payments) 0.000%
Daily (365 payments) 0.000%


Effective Annual Rate Formula

The Effective Annual Rate Calculator uses the following formula:

  • Effective Annual Interest Rate (i) = (1 + r/n) n − 1
  • Where,
  • i is the effective annual interest rate (expressed as a decimal),
  • r is the nominal interest rate (expressed as a decimal),
  • n is the number of compounding periods per year.

What is Effective Annual Rate Calculator

The Effective Annual Rate (EAR) Calculator is a tool used to calculate the annual interest rate or yield that takes into account the compounding of interest over a given time period. The EAR provides a more accurate representation of the true annual rate, especially when interest is compounded more frequently than once a year.

Here's how a typical Effective Annual Rate Calculator works:

  1. Nominal Interest Rate: You input the nominal interest rate, which is the stated interest rate for a specific period. For example, if the nominal interest rate is 6% per six months, you would enter 6%.

  2. Compounding Frequency: You select the compounding frequency, which represents how often the interest is compounded within a year. It can be annually, semiannually, quarterly, monthly, or even daily.

  3. Calculation: The calculator applies the compounding frequency to the nominal interest rate to calculate the Effective Annual Rate.

    EAR = (1 + (Nominal Interest Rate / Compounding Frequency))^Compounding Frequency - 1

  4. Displaying the Result: The calculator displays the calculated Effective Annual Rate, which represents the annual interest rate, accounting for compounding.

The Effective Annual Rate (EAR) is a useful metric because it allows for an apples-to-apples comparison of interest rates across different compounding periods. It reflects the true cost of borrowing or the actual yield on an investment over a full year.

For example, if you have a nominal interest rate of 5% with quarterly compounding, the Effective Annual Rate will be higher than 5% because the interest is being compounded more frequently.

It's important to note that the EAR considers not only the stated interest rate but also the compounding frequency. As a result, the EAR provides a more accurate measure of the actual interest earned or paid over time.

When comparing different financial products or investment opportunities, using the Effective Annual Rate helps in making more informed decisions by considering the impact of compounding on the overall return or cost.

The Effective Annual Rate Calculator is a valuable tool for individuals and businesses to evaluate and compare various financial options, such as loans, mortgages, savings accounts, bonds, or investment products. By calculating the EAR, you can determine which option offers the most favorable terms and maximize your returns or minimize your costs.

Effective Annual Rate Calculator Example

Certainly! Here's an example of an Effective Annual Rate (EAR) calculator that utilizes a table to calculate the EAR for different investment options with different compounding frequencies:

Investment Option Nominal Interest Rate Compounding Frequency Number of Periods Effective Annual Rate (EAR)
Option A 5% Annually 1 5.00%
Option B 4.75% Semi-annually 2 4.84%
Option C 4.6% Quarterly 4 4.68%
Option D 4.5% Monthly 12 4.58%

In this example, we have four different investment options with their respective nominal interest rates, compounding frequencies, number of compounding periods, and the corresponding Effective Annual Rates (EAR).

To calculate the Effective Annual Rate, you can use the formula: EAR = (1 + (Nominal Interest Rate / Number of Periods))^(Number of Periods) - 1

For instance, for Option A with a nominal interest rate of 5% compounded annually, the EAR would be 5.00%.

Similarly, using the same formula, you can calculate the EAR for Options B, C, and D based on their respective nominal interest rates, compounding frequencies, and number of compounding periods mentioned in the table.

The Effective Annual Rate (EAR) is a standardized way to compare the annual interest rates of different investments with varying compounding frequencies. It represents the true annual interest rate, taking into account the effects of compounding. By knowing the EAR, investors can make more accurate comparisons and decisions regarding different investment options.