APR vs. APY: Understanding the Difference | UBank

By UBank
Wednesday, November 01, 2023

When it comes to managing your finances and making informed decisions about loans, savings accounts, or investments, understanding the concepts of APR (Annual Percentage Rate) and APY (Annual Percentage Yield) is crucial. While these two terms may sound similar, they represent distinct measures of interest that can have a significant impact on your financial well-being. In this article, we will explore the differences between APR and APY, how they are calculated, and when to use each one to make informed financial decisions.

The Basics

Before delving into the intricacies of APR and APY, let's start by defining these terms and understanding their fundamental characteristics.

APR (Annual Percentage Rate)

APR, or Annual Percentage Rate, is a measure of the cost of borrowing or the return on an investment over the course of one year. It is typically expressed as a percentage and represents the annualized cost of a loan or the annualized return on an investment. APR is commonly used for products like credit cards, mortgages, personal loans, and auto loans. The key features of APR include:

  • Interest Rate: APR includes the interest rate charged on a loan or earned on an investment.
  • Fees: It takes into account any fees associated with the loan or investment, such as origination fees, closing costs, or annual fees.
  • Amortization: APR assumes that the loan will be paid off or the investment will be held for the entire year, even if it is shorter or longer in reality.

APY (Annual Percentage Yield)

APY, or Annual Percentage Yield, is also expressed as a percentage and represents the annualized rate of return on a savings account, certificate of deposit (CD), or an investment that earns compound interest. APY is particularly relevant for savings and investment products, as it factors in the compounding of interest over time. The key features of APY include:

  • Interest Compounding: APY considers how frequently interest is compounded within a year. The more frequently interest is compounded, the higher the APY will be. No
  • Fees: APY does not incorporate fees associated with an account or investment, focusing solely on the interest earned.
  •  Accurate Reflection: APY provides a more accurate reflection of how much money you will actually earn on your savings or investments due to compounding. 

APR vs. APY: When to Use Each

Now that we've covered the basics and how to calculate APR and APY, let's explore when it's appropriate to use each of these measures.

When to Use APR

  • Borrowing Decisions: APR is crucial when you're considering taking out a loan, such as a mortgage, car loan, or personal loan. It helps you compare the cost of borrowing from different lenders by considering not only the interest rate but also any associated fees.
  • Credit Cards: Credit card issuers typically provide APR information on their disclosures. Understanding the APR on your credit card can help you make informed decisions about carrying a balance or paying it off in full each month.
  • Comparing Loan Offers: When you receive loan offers from different lenders, comparing the APR of each offer allows you to choose the one with the lowest overall cost.

When to Use APY

  • Savings and Investments: APY is the go-to metric for evaluating savings accounts, certificates of deposit (CDs), and investment products like bonds or certificates. Since these products earn interest that compounds over time, APY provides a more accurate picture of your potential earnings.
  • Evaluating Investment Returns: When assessing the performance of investments in your portfolio, use APY to account for the compounding of returns. It allows you to gauge the true growth of your investments over time.
  • Long-Term Financial Planning: APY is invaluable when planning for long-term financial goals like retirement or saving for a child's education. It helps you estimate how much your savings or investments will grow over time.

Key Differences and Examples

To further illustrate the differences between APR and APY, let's consider a few examples:

Mortgage Loan

Suppose you're shopping for a mortgage and receive two offers: Lender A offers a 30-year fixed-rate mortgage with an interest rate of 4.5% and closing costs of $3,000. Lender B offers a similar 30-year fixed-rate mortgage with an interest rate of 4.7% and closing costs of $2,500. In this scenario, you should compare the APR of both offers to determine the total cost of each loan. Lender A might have a lower APR due to the higher upfront fees, making it a more cost-effective option over the long term.

Savings Account

Suppose you're considering two different savings accounts: Account X offers an annual interest rate of 1.5%, compounded monthly. Account Y offers an annual interest rate of 1.6%, compounded quarterly. In this case, you should calculate the APY for each account to determine which one will provide higher returns over time. The account with the higher APY (Account Y) will result in greater overall savings growth due to more frequent compounding.


Imagine you're comparing two investment opportunities: Investment A offers an annual interest rate of 6%, compounded annually. Investment B offers an annual interest rate of 5.8%, compounded quarterly. To assess which investment will yield better returns, calculate the APY for each. Investment A, with an APY of 6%, will likely provide higher overall returns due to the higher nominal interest rate and annual compounding.

The Impact of Compounding

One of the key distinctions between APR and APY lies in the treatment of interest compounding.Compounding can significantly affect the total interest paid or earned on a loan or investment.Let's explore this concept in more detail.

Compound Interest with APY:

  • APY takes into account the power of compound interest. When you earn interest on your savings or investments and that interest is reinvested or added to your principal, you earn interest on the interest you've already earned. This compounding effect can lead to exponential growth over time, especially in long-term savings or investments.
  • For example, if you have $10,000 in a savings account with an APY of 2%, compounded annually, after one year, you'll have $10,200. In the second year, you'll earn interest on the new balance of $10,200, resulting in a higher return than the initial 2%.

Simple Interest with APR:

  • APR, on the other hand, does not consider compounding. It assumes that the interest is calculated only on the initial principal amount throughout the entire loan term or investment period.
  • Using the same example, if you had a loan with an APR of 5%, you would pay $500 in interest over one year, regardless of whether the interest is compounded more frequently. APR does not account for the compounding effect, which can make it appear as though the cost of borrowing or the return on investment is lower than it actually is.

Making Informed Financial Choice

In conclusion, understanding the differences between APR and APY is essential for making informed financial decisions. While both measures represent annualized percentages, they serve distinct purposes and are used in different contexts.

APR focuses on the cost of borrowing or the return on investment without considering compounding and includes fees associated with the product. It is most relevant for loans, credit cards, and other products where interest is not compounded.

APY, on the other hand, accounts for the power of compounding and provides a more accurate representation of the potential growth of savings and investments. It is crucial for evaluating savings accounts, certificates of deposit, and long-term investment products.

When making financial decisions, consider whether the product involves compounding interest and whether there are associated fees. Using the appropriate metric, either APR or APY, will help you make better-informed choices, ultimately benefiting your financial well-being. Want more financial well-being tips?

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