Chegg for a Nominal Annual Rate R 6 Per Year the Effective Continuous Rate Per Year is Equal to
Effective Annual Rate Formula (Table of Contents)
- Formula
- Examples
- Calculator
What is the Effective Annual Rate Formula?
Effective Annual Rate is the actual interest rate that is earned or paid out on an investment, loan or any similar financial product, and it is otherwise different from "nominal Interest Rate" because of the payout period of interest, compounding of interest rate, total time period of the loan or investment, etc. Effective Annual Rate is calculated by the following formula;
Effective Annual Rate = [(1 + (Nominal Interest Rate / Number of Compounding Periods)) ^ Number of Compounding Periods] – 1
Examples of Effective Annual Rate Formula (With Excel Template)
Let's take an example to understand the calculation of Effective Annual Rate in a better manner.
You can download this Effective Annual Rate Formula Excel Template here – Effective Annual Rate Formula Excel Template
Effective Annual Rate Formula – Example #1
Suppose a Mr. X takes out a personal loan from a bank with an interest rate of 20%, compounded semi-annually. Calculate Effective Annual Rate using the information.
Solution:
Effective Annual Rate is calculated using the formula given below
Effective Annual Rate = [(1 + (Nominal Interest Rate / Number of Compounding Periods)) ^ Number of Compounding Periods] – 1
- Effective Annual Rate = [(1 + (20% / 2)) ^ 2] – 1
- Effective Annual Rate = 21%
Effective Annual Rate Formula – Example #2
Suppose Mr. A invested $100 in a certificate of deposit that pays out a nominal annual interest rate of 10% compounded on a quarterly basis. Calculate the Effective Annual Rate.
Solution:
Effective Annual Rate is calculated using the formula given below
Effective Annual Rate = [(1 + (Nominal Interest Rate / Number of Compounding Periods)) ^ Number of Compounding Periods] – 1
- Effective Annual Rate = [(1 + (10% / 4)) ^ 4] – 1
- Effective Annual Rate = 10.38%
Effective Annual Rate Formula – Example #3
Let us assume that mutual fund investment fetches 15.50% annual interest rate as earnings, while P2P Lending earns 15% annual nominal rate of interest, compounded monthly. So calculate the effective annual rate for both the cases.
Solution:
Effective Annual Rate is calculated using the formula given below
Effective Annual Rate = [(1 + (Nominal Interest Rate / Number of Compounding Periods)) ^ Number of Compounding Periods] – 1
For Mutual Fund
- Effective Annual Rate = [(1 + (15.50% / 1)) ^ 1] – 1
- Effective Annual Rate = 15.50%
For P2P Lending
- Effective Annual Rate = [(1 + (15% / 12)) ^ 12] – 1
- Effective Annual Rate = 16.075%
Explanation
The nominal interest rate is the stated rate on the financial product. In Example 3, the nominal rate displayed on the products makes the Mutual Fund look like the preferred choice of investment for investors because of the 0.50% higher annual nominal rate of interest earned.
However, the effective annual rate is calculated by taking the nominal annual rate of interest and compounding it for the number of specified periods (12 if compounding is monthly; 6 if compounding is bi-monthly; 4 if it is quarterly; and 2 if it is semi-annual) applicable in a time span of one year. In case of the mutual fund, the number of compounding periods per year is 1, while in the case of P2P lending, it is monthly compounding, hence there are 12 compounding periods.
Based on the formula,
Effective Annual Returns = [(1 + (nominal interest rate / number of compounding periods)) ^ (number of compounding periods) ] – 1
Mutual Fund Effective Annual Return = [(1 + (15.50% / 1)) ^ 1] – 1 = 15.50%
P2P Lending Effective Annual Return = [(1 + (15.00% / 12)) ^ 12] – 1 = 16.075%
Relevance and Uses of Effective Annual Rate Formula
The effective annual rate formula is used to distinguish the actual IRR (Internal Rate of Return) or annualized yield for an interest rate that may or may not compound multiple times over a given period. This could be very well used in comparing different kinds of investment opportunities, or loan facilities taken under different structures.
Let us assume that there are 2 investment opportunities, Post Office Term Deposits and Bank Fixed Deposits that an investor has narrowed down to, considering his/her risk appetite and suitability. The investor's ultimate goal is to make the most out of these deposits and earn a higher return. However, both instruments offer slightly different interest rates, while the Post Office Term Deposit offers quarterly compounding for the term under consideration.
- Investment Amount: Rs. 10 lakhs
- Period of Investment: 5 years
- Bank Fixed Deposit: 7.5% Annual Interest
- Post Office Term Deposit: 7.4% Annual Interest, compounded quarterly
By the looks of the annual interest rates offered, the Bank Fixed Deposit seems to be the better option. However, if the investor actually calculates the quarterly compounding factor of the Post Office Term Deposit, it results in an effective annual rate/return of 7.61%.
Due to this small change from 7.4% to 7.61% in effective rate, the investor would earn a total of Rs. 4,42,848.28 from this particular instrument, whereas he/she would have earned Rs. 3,35,469.14 from the Bank Fixed Deposit instrument.
If the investor misses calculating this effective annual rate, he/she would have lost out the opportunity to gain approximately more than Rs. 1 lakh from his investment.
Effective Annual Rate Formula Calculator
You can use the following Effective Annual Rate Calculator
| Nominal Interest Rate | |
| Number of Compounding Periods | |
| Effective Annual Rate | |
| Effective Annual Rate = | [(1 + (Nominal Interest Rate / Number of Compounding Periods)) Number of Compounding Periods ] - 1 | |
| [(1 + (0 / 0)) 0 ] - 1 = | 0 |
Recommended Articles
This is a guide to Effective Annual Rate Formula. Here we discuss How to Calculate Effective Annual Rate along with practical examples. We also provide an Effective Annual Rate Calculator with downloadable excel template. You may also look at the following articles to learn more –
- Calculator For Real Interest Rate Formula
- Return on Capital Employed Formula | Definition
- How to Calculate the Effective Interest Rate?
- What is Present Value of Annuity Formula?
- Annual Return Formula | How to Calculate?
Source: https://www.educba.com/effective-annual-rate-formula/
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