APR is the yearly cost of borrowing or earning money, shown as a percentage

APR stands for Annual Percentage Rate. It tells you what you will pay (or earn) over a full year, expressed as a percentage of the amount you borrowed or saved. If you borrow $1,000 at 5% APR, you will owe $50 in interest over one year — though the actual payment schedule may spread that cost across months.

APR includes not just the interest rate itself, but also other costs tied to the loan or account. For credit cards and personal loans, APR factors in fees. For mortgages, it includes origination fees and points. For savings accounts and CDs, APR is usually just the interest rate, because there are no borrowing fees involved. The key difference between APR and a simple interest rate is that APR gives you the full picture of what the product actually costs you.

Banks and lenders are required to disclose APR clearly so you can compare products fairly. A credit card offering 0% APR for six months will cost you nothing during that period, but the APR will jump to a higher rate after. A savings account showing 4.5% APR will earn you that amount annually if the money stays untouched.

Key Takeaways

  • APR is the percentage cost or earning rate for one full year, including fees and other charges beyond the base interest rate.
  • For debt, a lower APR means you pay less over time; for savings, a higher APR means you earn more.
  • APR is always disclosed by law, so you can compare the true cost of loans or the true earning power of savings products side by side.
  • The actual amount you pay or earn depends on how long you keep the money borrowed or saved, not just the APR itself.

How APR differs from interest rate

An interest rate is the percentage of your principal (the amount borrowed or saved) that you pay or earn. An APR includes that rate plus any other costs attached to the product. On a $10,000 personal loan, the interest rate might be 6%, but the APR could be 6.5% because the lender also charges a $200 origination fee. That fee gets factored into the APR to show you the true yearly cost.

For savings accounts and certificates of deposit (CDs), the interest rate and APR are usually the same, because there are no fees to borrow money from you. But for loans — mortgages, auto loans, credit cards — APR is always higher than the interest rate, because it includes origination fees, closing costs, or annual membership fees.

When you are comparing two loans, never compare interest rates alone. Always look at the APR, because that is what you will actually pay.

APR on credit cards and how it compounds

Credit card APR is the yearly rate you pay on any balance you carry from month to month. If your card has a 20% APR and you carry a $1,000 balance for the full year without paying it down, you will owe $200 in interest. But most credit cards charge interest monthly, not yearly, so the cost compounds — meaning you pay interest on the interest.

Credit card companies divide the APR by 12 to get a monthly rate, then apply that to your balance each month. A 20% APR becomes roughly 1.67% per month. If you owe $1,000 and make no payment, after one month you owe $1,016.70. After two months, you owe $1,033.61 (because the second month's interest is calculated on $1,016.70, not the original $1,000). This is why credit card debt grows so quickly.

Most credit cards also offer a 0% introductory APR for a set period — often 6 to 21 months — if you transfer a balance or open a new account. During that period, you pay no interest, but once it ends, the APR jumps to the regular rate. If you still carry a balance at that point, interest charges resume immediately.

APR on savings accounts and CDs

When you save money, the APR works in your favor. A savings account or CD with a 4.5% APR will earn you 4.5% of your balance over one year. A $10,000 deposit earning 4.5% APR will grow to $10,450 after 12 months (before taxes). Like credit card interest, savings interest usually compounds monthly or daily, so you earn interest on your interest.

The APR on savings products changes based on what the Federal Reserve does with interest rates. When the Fed raises rates, banks typically raise the APR on savings accounts and CDs. When the Fed cuts rates, APRs fall. This is why the APR you see today may not be the same next month. High-yield savings accounts and money market accounts often offer higher APRs than traditional savings accounts at the same bank.

CDs lock in a fixed APR for a set term — 3 months, 6 months, 1 year, 5 years, or longer. Once you open the CD, the APR does not change, even if the Fed raises or lowers rates. This makes CDs useful if you want to lock in a good rate before it falls.

APR on mortgages and auto loans

Mortgage and auto loan APRs include the interest rate plus closing costs, origination fees, and sometimes points (an upfront payment to lower the interest rate). A mortgage with a 6% interest rate might have a 6.2% APR because of a $2,000 origination fee spread across the loan term.

These loans are amortized, meaning you pay both principal and interest with each monthly payment. Early in the loan, most of your payment goes toward interest; later, more goes toward principal. The APR tells you the true yearly cost of the entire loan, accounting for this payment structure and all fees.

Mortgage APRs are usually fixed (they stay the same for the life of the loan) or adjustable (they change based on market rates after an initial fixed period). Auto loan APRs are almost always fixed. When comparing mortgages or auto loans, always ask for the APR, not just the interest rate, so you can see the full cost.

How to use APR when comparing financial products

APR makes it possible to compare very different products fairly. You can line up three credit card offers, three personal loans, or three savings accounts and see which one costs the least (for debt) or pays the most (for savings). The law requires lenders and banks to disclose APR in the same way, so the numbers are comparable.

For debt, lower APR is always better. A personal loan at 8% APR will cost you less than one at 12% APR, all else equal. For savings, higher APR is better. A CD at 5% APR will earn you more than one at 3% APR over the same time period.

Keep in mind that APR assumes you keep the money for a full year. If you pay off a credit card balance in three months, you will not pay the full APR amount — you will pay roughly one quarter of it. If you withdraw money from a CD early, you may lose some or all of the interest you earned, so the effective return is lower than the APR promised.

Variable APR versus fixed APR

A fixed APR stays the same for the entire life of the loan or account term. A mortgage with a fixed 6% APR will charge 6% for 15, 20, or 30 years, no matter what happens to market rates. This makes your payments predictable and protects you if rates rise.

A variable APR changes over time, usually tied to a benchmark rate set by the Federal Reserve or another index. Credit cards almost always have variable APRs. If the Fed raises rates, your credit card APR will rise within one or two billing cycles. Adjustable-rate mortgages (ARMs) also use variable APR after an initial fixed period. Variable APR is riskier because your costs can increase unexpectedly, but it often starts lower than fixed APR.

When choosing between fixed and variable, consider how long you plan to keep the product. If you are paying off a credit card in a few months, variable APR does not matter much. If you are taking a 30-year mortgage, a fixed APR protects you from decades of rate increases.

Frequently Asked Questions

Is APR the same as interest rate?

No. Interest rate is the percentage you pay or earn on the principal alone. APR includes the interest rate plus any fees, origination costs, or other charges tied to the product. For savings accounts, they are usually the same. For loans, APR is always higher because it includes fees.

How do I calculate how much APR will cost me?

Multiply the amount borrowed by the APR, then divide by 12 to get the monthly cost. A $5,000 loan at 10% APR costs roughly $500 per year, or $41.67 per month. This is approximate because actual payments depend on the loan term and how interest compounds, but it gives you a quick estimate.

Can APR change after I open an account or take out a loan?

Yes, if the APR is variable. Credit cards, adjustable-rate mortgages, and some savings accounts have variable APRs that move with market rates. Fixed APR products — like fixed-rate mortgages and most CDs — do not change. Check your account terms to see whether your APR is fixed or variable.

Why is my credit card APR so much higher than my savings account APR?

Credit card companies charge high APRs because lending to consumers carries more risk than holding their savings. If you do not pay your credit card bill, the lender loses money. With a savings account, you are the one taking the risk, so the bank pays you less. The difference also reflects market conditions and competition among lenders.

Does APR matter if I pay off my balance every month?

For credit cards, no. If you pay the full balance before the due date, you pay no interest regardless of the APR. APR only matters if you carry a balance from month to month. For savings, APR always matters because you earn that rate whether you touch the money or not.