APR vs APY: Understanding the Key Differences

Best answer: APR shows the annual cost of borrowing, while APY shows the annual yield on money held in an interest-bearing deposit account.

Who it’s for: Borrowers comparing a loan or credit card and savers comparing deposit accounts.

Recommended next step: Compare APR with APR when borrowing or APY with APY when saving, then review the fees and conditions behind each rate.

APR and APY both express a rate on an annual basis, but they answer different questions. APR helps you compare what you’ll pay to borrow; APY helps you compare what you may earn on deposits. This page is for borrowers reviewing a loan or credit card and savers choosing an interest-bearing account. The recommended next step is simple: if you’re borrowing, compare APRs across similar offers; if you’re saving, compare APYs across similar accounts. Then review the fees, term, balance rules, and penalties behind the percentage before deciding.

Who this comparison is for and what to do next

This APR vs APY comparison is for anyone deciding between borrowing offers or deposit accounts. Choose the side that matches your goal:

• Borrowing money: compare APRs across similar loans or credit cards, then check the term, fees, payments, and total amount you’ll repay.
• Saving money: compare APYs across similar deposit accounts, then check balance requirements, fees, rate changes, and withdrawal penalties.

APR and APY are not interchangeable scores. Use APR to assess borrowing costs and APY to assess deposit earnings.

APR vs APY at a glance

APR is the required format for advertised credit rates under federal rules, and the abbreviation “APR” may be used for annual percentage rate disclosures (Consumer Financial Protection Bureau). For loans, APR can include the interest rate plus additional fees charged with the loan (CFPB). APY is a standardized way to disclose interest earned so consumers can compare deposit accounts across banks (FDIC).

The two rates are therefore not rivals competing to describe the same transaction. They are different comparison tools for different sides of personal finance.

What is APR?

APR stands for annual percentage rate. It puts the cost of credit into an annual percentage format, making it easier to compare borrowing offers presented on the same basis. The CFPB explains that a loan’s APR measures its interest rate plus additional fees charged with the loan (CFPB). Federal advertising rules also require advertised credit rates to be stated as an annual percentage rate (CFPB).

For a borrower, APR is a starting point for comparing options such as loans or credit cards. A lower APR will generally look more attractive than a higher APR when every other part of the offers is genuinely the same. The APR can include interest and certain loan fees, but you should still read the complete disclosure to understand what you’ll pay. In practice, offers may differ in several ways, so the comparison also needs to consider:

• How long the borrowing period lasts
• Whether the rate can change
• What fees or charges apply
• The size and timing of required payments
• The total amount paid under the agreement

APR is most useful when comparing like with like. A rate attached to one kind of credit may not tell the whole story when placed beside a product with a different term, repayment structure, or set of conditions.

How is APR calculated?

The exact calculation depends on the credit product and its required disclosures. For a quick learning exercise, you can annualize a simple periodic rate by multiplying it by the number of equal periods in a year. For example, a hypothetical monthly rate of 1% corresponds to a simple annualized rate of 12%:

1% × 12 months = 12%

That illustration is not a substitute for the disclosed APR. Real offers can have product-specific rules and charges, so use the lender’s official disclosure when comparing actual credit.

What is APY?

APY stands for annual percentage yield. It is used to compare the rate of interest earned on deposit accounts. The FDIC describes APY as a common disclosure method intended to help consumers compare accounts between banks, while also warning that APY does not compare early-withdrawal penalties (FDIC).

APY helps compare the amount of interest an account can earn on an annual basis. It is especially helpful because the timing of interest matters. When earned interest remains in an account and later earns additional interest, the balance can grow through compounding. More frequent compounding can produce a different annual result from simple interest, even when the stated periodic rate initially looks similar.

This means savers should compare APY with APY—not APY with an unadjusted interest rate. They should also check the account conditions behind the advertised number, including:

• Minimum balances
• Monthly or maintenance fees
• Whether the rate can change
• Withdrawal restrictions
• Penalties that APY does not capture

How is APY calculated?

A common conceptual form is:

APY = (1 + periodic rate) ^ number of periods − 1

Suppose, purely as an illustration, an account has a hypothetical monthly rate of 1%. Applying monthly compounding gives:

(1.01 ^ 12) − 1 ≈ 12.68%

The example shows why a compounded annual yield can differ from a simple 1% × 12 = 12% annualization. It does not represent a current account offer. For a real comparison, use the APY stated in the institution’s disclosure.