APY vs. APR: The Difference That Actually Matters
Two acronyms, both percentages, both about interest, and both regularly confused with each other. They’re not measuring the same side of a transaction.
One is for earning, the other is for borrowing
APY, or annual percentage yield, describes how much you earn on money you deposit, like a savings account or a certificate of deposit. APR, or annual percentage rate, describes how much a loan costs you to borrow, like a mortgage, a car loan, or a credit card. Both are expressed as yearly percentages, which is exactly why they get mixed up, but one measures money coming to you and the other measures money you owe.
Mixing them up matters more than it might seem. Comparing a savings account’s APY to a loan’s APR as though they’re on the same scale can lead to genuinely bad financial decisions, like assuming a 5% APY savings account and a 5% APR loan leave you in the same position, when in most cases they don’t, for reasons that come down to how each figure is actually built.
Why APY is always at or above the nominal rate
APY accounts for compounding. If a savings account advertises a 5% nominal annual rate but compounds monthly, the actual APY comes out to about 5.12%, since interest earned early in the year starts earning its own interest for the rest of the year. The more frequently an account compounds, daily instead of monthly, for instance, the closer the APY creeps toward its theoretical maximum for that nominal rate, though the difference between daily and monthly compounding is usually small in practice.
Because of this, APY is always equal to or greater than the nominal rate it’s based on. It’s never lower. That makes APY the fairer number to compare across two savings products, since it already accounts for how often each one compounds, collapsing that variable into a single figure you can compare directly.
Why APR often runs higher than the interest rate
APR works differently. Rather than reflecting compounding, it’s designed to fold in the upfront fees a lender charges, origination fees, points, or closing costs, spreading their cost across the loan so borrowers can see something closer to the loan’s true annual cost, not just the stated interest rate. A mortgage advertised at 6% interest with $3,000 in closing costs will typically carry an APR somewhat above 6%, since those fees are being amortized into the rate over the life of the loan.
This means APR isn’t purely about compounding the way APY is; it’s about total cost. Two loans with the identical interest rate can have different APRs if one lender charges higher fees than the other, which is exactly why APR, not the advertised interest rate, is the number regulators require lenders to disclose prominently, and the number worth comparing across competing loan offers.
The law actually requires both, separately
This isn’t just industry convention. The Truth in Savings Act requires U.S. banks to disclose APY on deposit accounts specifically so consumers can compare savings products on equal footing. The Truth in Lending Act requires lenders to disclose APR on loans and credit cards for the same underlying reason, comparability. The two laws exist separately because the two figures are solving separate problems: one standardizes how compounding gets communicated on the earning side, the other standardizes how fees get communicated on the borrowing side.
A common mistake worth avoiding
A frequent error is treating a high-yield savings account’s APY and a low-rate loan’s APR as if they cancel each other out, as in “I’m earning 5% APY here and only paying 5% APR there, so it’s a wash.” In most real scenarios it isn’t, for a couple of reasons. Interest earned in a regular savings account is typically taxable as ordinary income, which reduces the real return below the advertised APY. Meanwhile, some loans carry fees that APR captures but that still represent real cash paid upfront, separate from the ongoing interest. Comparing the two headline percentages without accounting for taxes on one side and fee timing on the other can make a decision look more balanced than it actually is.
The safer approach is to treat each number as answering its own specific question rather than as directly interchangeable: APY answers “what will this deposit actually yield me in a year, accounting for compounding,” and APR answers “what will this loan actually cost me in a year, accounting for fees.” They’re both useful, and both required by law for good reason, but they were never meant to be measured against each other on the same scale.
A side-by-side example
Say you’re deciding between putting $5,000 into a savings account advertising 4.5% APY, or taking out a $5,000 personal loan advertised at a 9% interest rate with $150 in origination fees, which works out to roughly a 9.6% APR once the fee is folded in. These aren’t opposite sides of the same coin the way they might look at a glance. The savings account will earn you around $225 over a year, before taxes on that interest. The loan will cost you significantly more than that same $225 over a year, both because the rate is roughly double and because the fee adds an upfront cost the savings account simply doesn’t have. Lining the two numbers up side by side like this, rather than just eyeballing “4.5%” against “9%,” makes it obvious that borrowing to fund a deposit at a lower rate almost never makes sense, even though both figures are, technically, annual percentages describing money and interest.
Check both for your own situation
If you’re comparing savings or CD offers, our APY Calculator converts a nominal rate and compounding frequency into the effective annual yield you’d actually earn. If you’re comparing loan offers, our APR Calculator estimates the effective annual cost once fees are factored in alongside the stated interest rate, so you’re comparing offers on the number that actually reflects your total cost or return.
Neither calculator will tell you whether a given account or loan is a good idea in isolation, that depends on your own goals and circumstances, but both will get you to the one number that’s actually safe to compare against a competing offer, rather than the headline rate a bank or lender chose to advertise.
Common questions about APY and APR
For a savings account or CD, yes, a higher APY means a better return on your deposit, all else being equal. Just make sure you’re comparing accounts with similar terms, since some high-APY offers come with balance minimums, promotional rate periods that expire, or withdrawal restrictions.
APR folds in upfront fees like origination charges, points, and closing costs, spreading their cost across the life of the loan. A loan with a lower interest rate but higher fees can end up with a similar or even higher APR than a loan with a slightly higher rate but lower fees, which is exactly why APR is the more complete number to compare.
This depends on prevailing interest rate conditions, which change over time as the Federal Reserve adjusts its target rate. High-yield savings accounts and online banks typically offer meaningfully higher APYs than traditional brick-and-mortar banks, so it’s worth comparing current rates directly rather than assuming any single number is universally “good.”
No. APY reflects only the interest rate and compounding frequency; it does not account for taxes. Interest earned in a standard savings or CD account is generally taxable as ordinary income, which means your actual after-tax return will typically be lower than the advertised APY.
For the same deposit and time period, yes. Just watch for balance minimums, promotional rate periods that expire, or withdrawal restrictions that might apply to unusually high advertised APY offers.
APR folds in upfront fees like origination charges and points, spreading their cost across the loan term. This produces a more complete cost figure than the interest rate alone, which is why APR is usually the same or higher.
No, APY reflects only the interest rate and compounding frequency. Interest earned is generally taxable as ordinary income, so your actual after-tax return will typically be lower than the advertised APY.
This depends on current interest rate conditions, which shift with the Federal Reserve’s target rate. High-yield online savings accounts typically offer meaningfully higher APYs than traditional brick-and-mortar banks.
Most credit cards don’t charge the upfront origination fees that installment loans do, so there’s typically nothing extra for APR to fold in beyond the interest rate itself, making the two numbers identical for most cards.
They measure different things, so directly comparing them isn’t meaningful, but their numeric values could coincidentally match. What matters is understanding APY applies to deposits and APR applies to borrowing costs.
Yes. The Truth in Savings Act requires banks to disclose APY on deposit accounts, and the Truth in Lending Act requires lenders to disclose APR on loans, both specifically so consumers can compare offers fairly.