Yes, savings accounts build interest, but the amount depends on the rate your bank offers and how much you keep in the account
A savings account earns interest when the bank pays you a percentage of your balance in return for letting them use your money. The bank lends that money to other customers through mortgages, car loans, and credit cards, and keeps the difference between what they pay you and what they charge borrowers. You don't have to do anything to earn the interest—it accumulates automatically as long as your account stays open and funded.
The catch is that interest rates vary widely. A savings account at one bank might pay 0.01% annually while another pays 4.5% or higher. The difference between these rates is enormous over time. On a $10,000 balance, 0.01% earns $1 per year, while 4.5% earns $450 per year. Most traditional brick-and-mortar banks pay rates closer to the lower end, while online banks and credit unions often pay higher rates because they have lower overhead costs.
Key Takeaways
- Interest rates on savings accounts range from under 0.1% at large traditional banks to over 4% at online banks, and the rate your bank offers determines how much you earn.
- Interest compounds, meaning you earn interest on your interest, so money that sits longer grows faster—but only if the rate stays the same or rises.
- The Federal Reserve sets a benchmark rate that influences what banks pay, and rates change when the Fed changes its rate, usually several times per year.
- You can compare current rates across banks before opening an account, and switching to a higher-rate account is a realistic option if your current bank's rate falls behind.
How interest rates are set and why they change
Banks don't choose their savings rates in a vacuum. The Federal Reserve sets a target range for the federal funds rate—the rate at which banks lend to each other overnight. When the Fed raises this rate, banks typically raise the rates they pay on savings accounts. When the Fed lowers it, savings rates usually fall too. The Fed has raised rates multiple times since 2022 and may continue adjusting them based on inflation and economic conditions.
Your specific bank's rate also depends on how much competition it faces and how badly it needs deposits. An online bank trying to attract new customers might offer 4.5% while a large national bank offers 0.5% for the same type of account. Banks also set different rates for different account types—a money market account might pay more than a basic savings account, or a certificate of deposit (CD) might pay more than either.
Rates can change at any time, and banks are not required to notify you in advance. Some banks lower rates without warning, while others grandfather existing customers at their old rate for a period. Always check your bank's website or call to confirm the current rate on your account type before depositing a large sum.
How compound interest makes your money grow faster
Interest compounds when the bank adds earned interest to your balance, and then calculates next month's interest on that larger amount. If you deposit $5,000 at 4% annual interest compounded monthly, the bank divides 4% by 12 to get roughly 0.33% per month. In month one, you earn about $16.67. In month two, you earn 0.33% of $5,016.67, which is slightly more. Over a year, that compounding adds up to roughly $204 in total interest instead of the $200 you'd earn if interest were straightforward.
The longer money sits in the account, the more compounding works in your favor—but only if the rate doesn't drop. If your bank cuts the rate from 4% to 0.5%, your compounding advantage shrinks dramatically. This is why monitoring your rate matters. A rate that was competitive six months ago may no longer be.
The difference between APY and APR on savings accounts
APY stands for Annual Percentage Yield and includes the effect of compounding. APR stands for Annual Percentage Rate and does not. Banks are required to show you the APY when advertising savings rates, so that's the number you should use to compare accounts. If one bank advertises 4.5% APY and another advertises 4.5% APR, the APY account will earn slightly more because it accounts for compounding.
The difference between APY and APR is usually small on savings accounts—often less than 0.1%—but it matters more on larger balances or over longer periods. Always look for the APY label when comparing rates, and ignore any rate quoted without it.
When interest gets deposited to your account
Banks compound interest on different schedules. Some compound daily, some monthly, and some quarterly. Daily compounding is best for you because your interest earns interest more often, but the practical difference between daily and monthly compounding is usually small—less than 0.1% per year on most balances.
Interest is typically deposited to your account monthly, though some banks deposit it quarterly or even annually. You'll see it as a credit in your transaction history. Once it's deposited, it becomes part of your balance and earns interest itself in the next compounding period. You don't have to do anything to receive it.
How to find the best rate for your situation
Comparing rates takes minutes. Visit the websites of online banks like Marcus, Ally, American Express Bank, and Discover, as well as your local credit union if you're a member. Write down the APY for each account type you're interested in, along with any minimum balance requirements or monthly fees. Most high-rate savings accounts have no minimums and no fees, but confirm this before opening.
If you find a better rate elsewhere, moving your money is straightforward. You can open a new account at the higher-rate bank and transfer your balance electronically, usually within one to three business days. Your old account can stay open or be closed—there's no penalty either way. Some people keep accounts at multiple banks to take advantage of different rates for different purposes, or to spread deposits across institutions for insurance protection.
Rate shopping doesn't hurt your credit score. Banks do a soft inquiry when you open a savings account, which doesn't affect your credit. You can compare as many banks as you want without consequence.
What reduces or eliminates interest earnings
Monthly fees are the most common way interest gets eaten away. If your bank charges a $10 monthly maintenance fee and your account earns $5 per month in interest, you're actually losing $5. Always check the fee schedule before opening an account. Most online banks have zero monthly fees, while some traditional banks charge $5 to $15 per month if you don't maintain a minimum balance.
Frequent withdrawals don't reduce interest earnings directly, but some account types limit how many withdrawals you can make per month without penalty. A regular savings account usually has no withdrawal limits, but a money market account might charge a fee if you withdraw more than six times per month. Check your account terms to understand any limits.
Inflation is another factor that reduces what your interest actually buys you. If your savings account earns 2% interest but inflation is 3%, your money is losing purchasing power even though the balance is growing. This is why comparing your rate to current inflation matters when deciding where to keep money you plan to use soon versus money you're saving long-term.
Frequently Asked Questions
Do I have to do anything to earn interest on my savings account?
No. Interest accrues automatically as long as your account is open and has a balance. You don't need to take any action. The bank calculates and deposits interest on its own schedule, usually monthly.
What's the difference between a savings account and a money market account?
A money market account typically pays a higher interest rate than a savings account but may require a larger minimum balance and limit how many withdrawals you can make per month. Both are insured by the FDIC up to $250,000. Choose based on how often you need to access the money and whether the higher rate justifies any restrictions.
Can I lose money in a savings account?
Your principal balance is protected by FDIC insurance up to $250,000 per account owner per bank. You won't lose the money you deposit. However, if inflation rises faster than your interest rate, the purchasing power of your money decreases—meaning it buys less even though the account balance grows.
Should I move my money if my bank lowers its rate?
If your bank's rate falls significantly below what other banks offer, moving your money takes about three days and costs nothing. Many people switch when the gap exceeds 1% or more. Track your rate quarterly to stay aware of whether it's competitive.
How much interest will I earn on $10,000?
It depends entirely on the rate. At 0.5% APY, you'd earn about $50 per year. At 4.5% APY, you'd earn about $450 per year. Check your bank's current APY and multiply your balance by that rate to estimate your annual earnings.