How to Calculate APR, Annual Percentage Rate?


Written By: Ehsan Jahandarpour

Learning how to calculate APR, also known as the Annual Percentage Rate, is a crucial step in understanding the total cost of a loan. APR represents the total cost of borrowing money, including both the interest rate and any additional fees, expressed as a yearly rate. As a borrower, it is important to understand APR because it provides a comprehensive view of the total cost of the loan, enabling you to compare the costs of different loan options and make an informed decision.

Whether you’re taking out a mortgage, a personal loan, or a small business loan, understanding APR is essential for determining which loan will be the most cost-effective for you over the life of the loan. In this article, we will explain how to calculate APR and why it is so important for borrowers to understand.

What is APR?

Annual Percentage Rate (APR) is a metric used to express the cost of borrowing money. It represents the total cost of a loan, including both the interest rate and any additional fees, as a yearly rate. APR is expressed as a percentage and provides borrowers with a clear and concise way to compare the costs of different loan options.

APR is calculated by taking into account the interest rate, loan term, and any additional fees associated with the loan. The calculation of APR takes into account the compounding of interest, which means that interest is charged on the loan balance, including both the original loan amount and any accumulated interest. The result is a yearly rate that represents the total cost of the loan, expressed as a percentage.

For example, let’s say you take out a $10,000 loan with an interest rate of 5% and a $100 origination fee. The calculation of the APR for this loan would take into account both the interest rate and the origination fee. If the loan term is two years, the APR would be 5.2%. This means that over the two-year life of the loan, you would pay a total of $520 in interest and fees, or an average of $260 per year.

Here’s a useful table for beginners to understand the calculation of APR:

Loan Amount: $10,000 Interest Rate: 5% Origination Fee: $100 Loan Term: 2 years

ComponentAmount
Interest$500
Fees$100
Total$600
APR5.2%

In conclusion, APR is a crucial metric for borrowers to understand because it provides a comprehensive view of the total cost of a loan, including both the interest rate and any additional fees.

How to calculate APR?

Calculating APR can be a bit complicated, but it is important for borrowers to understand the true cost of a loan. Here is a step-by-step guide on way to calculate APR, along with two examples:

Step 1: Determine the Interest Rate The first step in calculating APR is to determine the interest rate of the loan. This is the rate at which interest will accrue on the loan balance.

Step 2: Add Any Additional Fees Next, you need to add any additional fees associated with the loan, such as origination fees, prepayment penalties, or late fees. These fees will increase the overall cost of the loan and should be taken into account when calculating APR.

Step 3: Calculate the Total Cost of the Loan To calculate the total cost of the loan, you need to add the interest rate and any additional fees to the loan amount. This will give you the total amount that the borrower will pay over the life of the loan.

Step 4: Divide the Total Interest by the Total Loan Amount Next, you need to divide the total interest by the total loan amount. This will give you a percentage that represents the cost of borrowing money over the life of the loan.

Step 5: Multiply by the Number of Days in a Year Finally, you need to multiply the percentage obtained in step 4 by the number of days in a year (365). This will give you the APR of the loan.

Example 1: Suppose a borrower takes out a $10,000 personal loan with an interest rate of 12% and a loan term of 36 months. The loan also has an origination fee of $200.

To calculate the APR, we first need to calculate the total interest to be paid over the life of the loan:

$10,000 x 12% = $1,200

Next, we need to add the origination fee to the loan amount to determine the total cost of the loan:

$10,000 + $200 = $10,200

Finally, we divide the total interest by the total loan amount and multiply by the number of days in a year to determine the APR:

$1,200 ÷ $10,200 x 365 ÷ 36 months = 13.49%

In this example, the APR of the loan would be 13.49%.

Example 2: Suppose a borrower takes out a $50,000 small business loan with an interest rate of 10% and a loan term of 60 months. The loan also has an origination fee of $1,000.

To calculate the APR, we first need to calculate the total interest to be paid over the life of the loan:

$50,000 x 10% = $5,000

Next, we need to add the origination fee to the loan amount to determine the total cost of the loan:

$50,000 + $1,000 = $51,000

Finally, we divide the total interest by the total loan amount and multiply by the number of days in a year to determine the APR:

$5,000 ÷ $51,000 x 365 ÷ 60 months = 11.39%

In this example, the APR of the loan would be 11.39%.

Summary Table: How to Calculate APR

Loan AmountInterest RateLoan Term (months)Upfront FeesTotal Loan CostTotal InterestAPR Calculation
$10,00010%36$200$11,200$1,20013.49%
$50,00010%60$1,000$51,000$5,00011.39%

Example of apr calculated:

Suppose a borrower takes out a $10,000 personal loan with an interest rate of 12% and a loan term of 36 months. The loan also has an origination fee of $200.

To calculate the APR, we first need to calculate the total interest to be paid over the life of the loan:

$10,000 x 12% = $1,200

Next, we need to add the origination fee to the loan amount to determine the total cost of the loan:

$10,000 + $200 = $10,200

Finally, we divide the total interest by the total loan amount and multiply by the number of days in a year to determine the APR:

$1,200 ÷ $10,200 x 365 ÷ 36 months = 13.49%

In this example, the APR of the loan would be 13.49%. This means that the borrower would pay an additional 13.49% in interest and fees on top of the loan amount over the life of the loan.

APR Calculator:

An APR calculator is a useful tool that can help you determine the total cost of a loan, including interest and other fees. By inputting the loan amount, interest rate, and loan term, the calculator will calculate the APR, which represents the true cost of borrowing. The APR takes into account not only the interest rate, but also any upfront fees and other charges associated with the loan. By using an APR calculator, borrowers can easily compare different loan options and determine which one offers the best value in terms of interest and fees.

Calculate APR for bad credit score:

APR for a loan with a bad credit score is typically higher compared to a loan for someone with a good credit score. This is because lenders perceive borrowers with bad credit as higher risk and therefore, charge higher interest rates to compensate for the potential default. On average, APR for a loan with bad credit can range anywhere from 20% to over 100%. The exact APR will depend on various factors such as the lender, loan type, and the borrower’s credit score.

It is important to remember that a higher APR means a higher total cost of borrowing, so it is in the borrower’s best interest to work on improving their credit score and shopping around for the best interest rate and terms possible.

What factors affect the annual percentage rate?

APR is affected by a variety of factors, including interest rate, loan term, loan fees, compounding of interest, credit score, and loan type. By understanding these factors and how they impact APR, borrowers can make informed decisions about which loan will be the most cost-effective for them over the life of the loan.

  • Interest rate: The interest rate is the primary component of APR. A higher interest rate means a higher APR, while a lower interest rate means a lower APR.
  • Loan term: The loan term is the length of time over which the loan is to be repaid. A longer loan term generally results in a lower monthly payment but a higher APR, while a shorter loan term results in a higher monthly payment but a lower APR.
  • Loan fees: Loan fees, such as an origination fee, a processing fee, or a prepayment penalty, can also impact APR. Fees increase the total cost of the loan, which increases APR.
  • Compound interest: APR takes into account the compounding of interest, which means that interest is charged on the loan balance, including both the original loan amount and any accumulated interest.
  • Credit score: A borrower’s credit score can impact APR, as lenders use credit score as an indicator of creditworthiness. Borrowers with higher credit scores generally receive lower interest rates and lower APRs.
  • Loan type: The type of loan can also impact APR. For example, personal loans generally have a higher APR than secured loans, such as a mortgage or a car loan, because they are unsecured and carry a higher risk for the lender.
how to calculate apr
how to calculate apr

What are the types of APR?

There are several different types of APR, each of which provides a different way of expressing the cost of borrowing money. Borrowers should be aware of how to calculate apr for the different types of APR and how they impact the total cost of the loan when comparing loan options.

  • Nominal APR: The nominal APR is the simple interest rate expressed as a yearly rate. It does not take into account the compounding of interest or any additional fees associated with the loan.
  • Effective APR: The effective APR is the annual rate that takes into account the compounding of interest and any additional fees associated with the loan. how to calculate apr provides a more accurate representation of the total cost of the loan, including both the interest rate and any fees.
  • Introductory APR: The introductory APR is a temporary interest rate offered to new borrowers for a limited time. It is often used as an incentive to attract new customers, and it may be significantly lower than the regular APR for the loan.
  • Variable APR: The variable APR is an interest rate that can change over time, based on a benchmark rate, such as the Prime Rate. The variable APR is generally lower than the fixed APR but can increase over time, leading to a higher overall cost of the loan.
  • Fixed APR: The fixed APR is an interest rate that remains constant over the life of the loan. Borrowers with a fixed APR know exactly what the interest rate will be and how much they will pay over the life of the loan, making it easier to budget and plan for loan repayment.
  • Penalty APR: The penalty APR is a higher interest rate that may be imposed on borrowers who miss payments or violate the terms of the loan agreement. Learn how to calculate apr because the penalty APR is generally significantly higher than the regular APR, and it can lead to a higher overall cost of the loan.

How does APR impact credit score?

APR, or annual percentage rate, does not directly impact your credit score. However, it is closely related to your creditworthiness, which is one of the key factors used to calculate your credit score. Your creditworthiness is determined by your credit history, credit utilization, payment history, and other factors.

A higher APR vs APY often indicates that the lender believes you are at a higher risk of default [1], so they are charging you a higher rate of interest to compensate them for the risk. A lower APR may indicate that the lender believes you are a lower risk, so they can charge you a lower rate of interest. Having a higher APR may impact your credit score if it causes you to have a higher credit utilization ratio, which can lower your score. Additionally, if you are unable to pay the higher interest rate, this may lead to late payments and other negative impacts on your credit score.

Does interest rate impact APR?

Yes, interest rate is one of the factors that affects the APR. The APR includes not only the interest rate charged on a loan, but also any additional fees or charges associated with the loan. These fees can include origination fees, discount points, closing costs, and other fees. As the interest rate increases, the APR increases as well.