A savings account may pay a modest return while a mortgage, auto loan, or credit card charges a much higher rate. That difference does not mean the bank simply keeps the entire gap as profit. Deposit and loan rates serve different purposes and include different costs.
A deposit rate is what a bank pays to use customer funds, while a loan rate is what a borrower pays for credit. Loan rates are usually higher because they can include market funding costs, borrower risk, operating expenses, loan terms, and lender pricing.
Deposit Rates and Loan Rates Serve Different Purposes
From a bank’s perspective, a deposit is a source of funding. The bank may pay interest to attract and retain money in savings accounts, money market deposit accounts, and certificates of deposit, commonly called CDs.
A loan is an asset that produces interest income. The lender must price the loan for the cost of obtaining funds, the possibility that the borrower may not repay, administrative expenses, regulatory capital requirements, and the lender’s expected return. Federal Reserve research has found that expected credit losses are positively connected to the interest-rate spread charged on mortgages and credit cards.
| Feature | Deposit Rate | Loan Rate |
|---|---|---|
| What it represents | Interest paid to the customer | Cost charged to the borrower |
| Common comparison number | Annual Percentage Yield, or APY | Interest rate and Annual Percentage Rate, or APR |
| Main influences | Market rates, account term, competition, and funding needs | Benchmark rates, credit risk, collateral, loan term, fees, and lender margin |
| Customer receives | Interest on deposited money | Loan proceeds |
| Customer pays | Possible account fees or early-withdrawal penalties | Principal, interest, and applicable fees |
The comparison is not one-to-one. Banks manage deposits, wholesale funding, securities, reserves, and many types of loans together rather than matching one customer’s savings account directly with another customer’s loan.
How Benchmarks and Lender Margins Work
There is no single formula used for every U.S. consumer loan. However, many variable-rate products can be understood with this basic structure:
Variable interest rate = benchmark index + lender margin
The benchmark, also called an index or base rate, moves with broader financial conditions. Examples may include the prime rate, Treasury yields, or the Secured Overnight Financing Rate, depending on the product and contract.
The margin is the number of percentage points added by the lender. For an adjustable-rate mortgage, the Consumer Financial Protection Bureau explains that the fully indexed rate equals the index plus the margin, subject to any rate caps in the loan agreement. The index can change, while the contractual margin generally remains fixed after closing.
The Federal Funds Rate Does Not Directly Set Your Rate
Checked July 26, 2026, the Federal Open Market Committee’s target range for the federal funds rate was 3.50% to 3.75%, based on its June 17, 2026 decision. The effective federal funds rate was 3.63% on July 23, and the bank prime loan rate reported in the Federal Reserve’s July 24 release was 6.75%.
The federal funds rate influences short-term financial conditions, but the Federal Reserve does not directly choose the APY on a bank account or the rate offered to an individual borrower.
Deposit rates may change according to a bank’s need for funding and its competition for customers. Loan rates may respond to the federal funds rate, Treasury yields, credit conditions, expected defaults, and demand for loans. This is why savings rates, mortgage rates, auto loan rates, and credit card APRs may change at different times and by different amounts.
Why Two Borrowers Can Receive Different Rates
A lender may consider the borrower’s credit score, payment history, income, existing debts, down payment, collateral, loan amount, repayment term, and loan type. Higher expected default risk can result in a larger spread above the lender’s benchmark.
Fixed-rate loans also include a pricing spread, even when the contract does not display a simple index-plus-margin formula. Market yields, expected funding costs, loan duration, prepayment risk, borrower characteristics, and lender competition can all affect the offered rate.
APY and APR Are Not the Same Measurement
For deposits, compare the Annual Percentage Yield. APY reflects the interest rate and the frequency of compounding over a 365-day period. Federal deposit-account rules also require disclosures about minimum balances, fees, and other account terms.
For loans, review both the interest rate and the Annual Percentage Rate. The interest rate measures the cost of borrowing the principal. APR is broader because it can include the interest rate plus certain origination charges and other loan fees. A loan with a lower advertised interest rate can therefore have a higher APR.
The Deposit-Loan Spread Is Not Pure Profit
The difference between what a bank earns on interest-bearing assets and what it pays for funding contributes to its net interest margin. However, a simple subtraction of one advertised deposit APY from one advertised loan rate does not show the bank’s net profit.
Banks also face employee and technology expenses, deposit insurance assessments, credit losses, liquidity costs, regulatory requirements, and taxes. The deposit and loan products may also have different balances, maturities, and rate-reset schedules.
What to Check Before Comparing Rates
For a Savings Account or CD
- Compare APY rather than only the stated interest rate.
- Check minimum opening and balance requirements.
- Review monthly fees and conditions for waiving them.
- For a CD, confirm the maturity date and early-withdrawal penalty.
- Verify that the institution and account category have appropriate federal deposit insurance coverage.
For a Loan
- Compare APRs for similar loan types and repayment terms.
- Identify whether the rate is fixed or variable.
- For a variable rate, find the index, margin, adjustment schedule, and caps.
- Review origination fees, discount points, prepayment terms, and late-payment charges.
- Use the final disclosure or loan agreement instead of relying only on an advertised minimum rate.
Bottom Line
Deposit rates and loan rates are connected to the same financial system, but they are not designed to move together. A deposit APY is the return offered for keeping money at a financial institution. A loan rate includes the cost of funding plus the risks and expenses involved in lending.
When comparing deposits, focus on APY, fees, balance rules, and withdrawal restrictions. When comparing loans, review the benchmark, margin, APR, fees, adjustment schedule, and rate caps. The final rate depends on the product, lender, market conditions, and your financial profile.