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Banking Basics

What Is APR on a Credit Card?

Learn what is APR on a credit card, the different types of APR and how credit card interest works before choosing your first credit card.

Jordan Bishop • October 13, 2022

In This Article

  1. What is APR?
  2. Types of credit cards APRs
  3. Fixed vs. variable APR
  4. How do you calculate credit card interest?
  5. How to lower your APR
  6. FAQs
  7. Lower APR = better for you

As you learn more about what credit cards are, one of the terms you’ll come across is the interest rate, credit card APR, or just APR. You might have a general idea of what APR is or how to calculate credit card interest, but a deeper understanding will serve you well on your financial journey. 

Keep reading for an overview of the definition of credit card APR, the different kinds of APR, how to calculate credit card interest, and some tips on how to lower your credit card’s APR.

What is APR?

APR stands for Annual Percentage Rate, which is the interest rate you pay for the money you borrow from your credit card issuer. 

The APR calculates your daily interest rate by dividing your annual rate by 365. Interest is calculated based on your daily balance and charged at the end of your billing cycle if you didn’t pay off the entire balance before your due date.

If you use your credit card only to pay for things you can afford to pay back by the end of the month, you won’t need to pay any interest. In addition to not paying interest, paying your credit on time can help boost your credit score and lower your card’s APR (more on that later).

Types of credit cards APRs

Depending on your credit card use, the issuer can charge different APRs to determine the interest you have to pay. Here are the most common:

Purchase APR

The purchase APR is the APR that credit card companies and banks generally refer to when promoting credit cards. As the name suggests, this is the interest rate you pay on transactions that qualify as purchases, including food, a new phone, or your Netflix subscription.

Transactions that don’t count as purchases include cash advances, balance transfers, fees, and refunded purchases.

Introductory APR

Sometimes, to attract new customers to sign up for their credit cards, credit card issuers offer introductory APRs for a limited time. These special interest rates are typically lower than the card’s regular purchase APR, allowing you to save on interest if you plan to make a large purchase and carry a balance.

Balance transfer APR

A balance transfer APR is a promotional APR on some credit cards for transferring your balance from other credit cards. Balance transfer APRs can go as low as 0% and can last anywhere from a few months to a year or more.

Balance transfer APRs can help you consolidate your credit card debt and make it easier to pay off your credit card debt while saving on interest.

Cash advance APR

When you use your credit card to purchase from stores, your credit provider gets a percentage of that purchase from the vendor through credit processing fees. But if you use your card to withdraw cash from an ATM, they won’t receive that percentage fee, so your card provider charges a cash advance APR to compensate for the lost income.

You’ll still need to pay the cash advance APR even if you paid your balance before the monthly due date.

Penalty APR

If you missed a credit card payment, your credit provider could charge you a Penalty APR which can go as high as 30% for at least six months.

If your credit provider did charge you a Penalty APR, you need to make consecutive on-time payments for six months to get rid of this APR under the CARD Act of 2009.

Fixed vs. variable APR

Besides the types of APRs mentioned above, which differ in terms of the transactions you make with your credit card, APRs can also be fixed or variable.

What is a fixed APR?

Fixed APR credit cards have APRs that stay the same from the moment you get your credit card. If your credit provider wants to change the APR, the law requires them to notify you in advance to give you time to react accordingly.

What is a variable APR?

Variable APR credit cards, on the other hand, have annual interest rates that fluctuate with different economic factors and company policies. Some issuers limit how far up or down it can fluctuate.

The type of credit card APR you choose depends on your personal preference and risk tolerance. Fixed-rate APR can be a good choice since you know what you are getting, and it is predictable. However, though variable APR is unstable and fluctuating, it can also lower your interest in the right conditions.

How do you calculate credit card interest?

Knowing your credit card’s APR and keeping track of your balance will help you keep track of your expenses and plan accordingly. 

The first thing you need to do is calculate your daily rate by dividing your APR by 365 days:

Card’s Daily Rate = APR / 365 Days

Once you have that number, you’ll need to know your average daily balance.

What matters isn’t your balance at the end of the month, but how your balance changes at the end of each day. Calculate your daily balance by adding the balance at the end of each day of your billing cycle and dividing the sum by the total number of days:

Average Daily Balance = (Sum of all balances at the end of each day) / (Number of days in the billing cycle)

Then, determine your interest by multiplying the daily interest rate times your average daily balance times the number of days in your billing cycle:

Interest = (Card’s daily rate) x (Number of days in the billing cycle) x (Average daily balance)

Here’s an example using actual values. Suppose your credit card has an APR of 17%, with an average daily balance of $500 in January. Here’s what the computation would look like:

  • Step 1: 17% APR / 365 Days = 0.0466%
  • Step 2: 0.0466% x 31 Days x $500 = $7.22

From this example, you’ll need to pay $7.22 for the $500 you spent in January if you don’t settle your balance before your card’s due date.

How to lower your APR

The APR your credit card issuer or bank approves you for largely depends on your credit score. So, if it’s your first credit card and you have no credit history, you’ll likely have no choice but to apply for a credit card with a modest to high APR and use it to build your credit score. Another option is to get a secured credit card instead.

To build your credit score with your card, you need to keep several things in mind:

  • Never max out your credit card (aim to use only 30% or less of your total credit).
  • Always make sure to settle your balance before the due date.
  • Avoid applying for multiple credit cards at the same time.

Do this consistently, and you’ll surely improve your credit score.

Once your credit score is good enough (670-739), you can either get a card with better rates or negotiate with your credit provider to lower your current APR.


What is a good APR rate for a credit card?

The average credit card APR is around 18%,¹ so anything lower than that is considered a good APR.

Will I pay APR if I pay on time?

You won’t need to pay Purchase APR if you settle your balance before your monthly due date. However, if you used your credit card to withdraw cash, you must pay the Cash Advance APR even if you paid your balance in full and on time.

What is the difference between the APR and interest rate?

The interest rate is only the cost of a loan, which does not include the different associated fees.

APR, on the other hand, is the “true” cost of the loan, which includes interest and additional associated fees.

Is it better to have a higher or lower APR on a credit card?

A credit card’s APR is the interest and other fees you pay your credit provider. The higher the APR, the higher the interest you pay, so it is better to have a lower APR on a credit card.

Lower APR = better for you

Generally, the lower the APR, the lower the interest you need to pay. But a low APR isn’t the end-all and be-all of credit cards, since you can pay off your balance in full each month and avoid paying interest altogether. If that’s the case, other aspects of how credit cards work – like their rewards and features  – become more important.

With that, you’re ready to apply for your first credit card and use what you’ve learned to ensure you get the best deal possible.

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1 Data sourced from Bankrate: Average Credit Card APR as of September 27, 2022:

2 On-time payment history can have a positive impact on your credit score. Late payment may negatively impact your credit score. Chime will report your activities to TransUnion®, Experian®, and Equifax®. Impact on your credit may vary, as credit scores are independently determined by credit bureaus based on a number of factors including the financial decisions you make with other financial services organizations.

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