Interest is money your bank or lender pays you for letting them use your funds

When you deposit money into a savings account, money market account, or certificate of deposit (CD), the bank borrows that money from you. In exchange, they pay you interest — a percentage of your balance, calculated and added to your account on a schedule the bank sets. The more money you deposit, the higher the interest rate, and the longer you leave it untouched, the more interest you earn.

The amount you earn depends on three things: how much money sits in the account, what interest rate the bank offers, and how often the bank compounds that interest (adds earned interest back into your balance so you earn interest on the interest). A bank offering 4.5% annual percentage yield (APY) on a $10,000 deposit will pay you differently than a bank offering 0.01% APY on the same amount — and that difference compounds over months and years.

Key Takeaways

  • High-yield savings accounts currently pay between 4% and 5.5% APY, while traditional savings accounts at large banks often pay 0.01% or less.
  • Money market accounts and certificates of deposit (CDs) are other ways to earn interest, each with different rules about when you can withdraw your money.
  • Interest compounds — meaning you earn interest on the interest you already earned — so leaving money untouched longer increases your total earnings.
  • Online banks typically offer higher interest rates than brick-and-mortar banks because they have lower overhead costs.
  • The interest rate you receive depends on the current economic environment and the Federal Reserve's decisions, so rates change over time.

High-yield savings accounts pay the most interest with no withdrawal penalties

A high-yield savings account is a savings account offered by online banks or online divisions of traditional banks that pays significantly more interest than a standard savings account. As of early 2024, high-yield savings accounts pay between 4% and 5.5% APY, while traditional savings accounts at major banks like Bank of America, Chase, or Wells Fargo typically pay 0.01% to 0.05% APY. On a $5,000 deposit, that difference means earning roughly $200 to $275 per year in a high-yield account versus $0.50 to $2.50 in a traditional account.

High-yield savings accounts work like regular savings accounts — you can deposit money, withdraw it whenever you want, and the FDIC insures your balance up to $250,000. The main difference is that online banks have lower costs than physical branches, so they pass those savings to you as higher interest rates. Banks like Marcus (owned by Goldman Sachs), Ally Bank, American Express Personal Savings, and Discover Bank all offer high-yield savings accounts. You can open one online in minutes, and your money is accessible the same way as a traditional account.

The catch is that interest rates are not fixed — they move up and down based on what the Federal Reserve does with its benchmark interest rate. When the Fed raises rates, banks raise the rates they pay on savings. When the Fed lowers rates, banks lower theirs. This means the 5% you earn today might drop to 3% in six months if the Fed cuts rates.

Certificates of deposit lock your money away for a may provide rate

A certificate of deposit (CD) is an account where you agree to leave your money untouched for a set period — usually three months, six months, one year, or five years — in exchange for a higher interest rate than a savings account offers. If you withdraw the money before the term ends, you pay a penalty, usually equal to a few months of interest. If you leave it alone, you earn the full rate the bank promised, regardless of whether rates drop later.

CDs are useful if you know you will not need the money for a specific period and want to lock in a rate before it falls. A one-year CD might pay 4.8% APY while a high-yield savings account pays 4.5% APY — not a huge difference, but meaningful if you have $20,000 or more. The tradeoff is that your money is not accessible without a penalty. Some banks offer "no-penalty CDs" that let you withdraw early without a fee, but they typically pay a lower rate than traditional CDs.

You can buy CDs from banks, credit unions, or brokerage firms. The FDIC insures CDs up to $250,000 per bank, so your principal is protected even if the bank fails. If you want to spread risk across multiple banks, you can open CDs at different institutions — each account is insured separately up to $250,000.

Money market accounts combine features of savings and checking

A money market account is a hybrid between a savings account and a checking account. It pays interest like a savings account but also gives you a debit card and check-writing privileges like a checking account. Interest rates on money market accounts are typically higher than traditional savings accounts but lower than high-yield savings accounts — usually between 1% and 4.5% APY depending on the bank and your balance.

Money market accounts often have tiered interest rates, meaning you earn more interest if you maintain a higher balance. A bank might pay 0.5% APY on balances under $10,000 but 3.5% APY on balances over $100,000. They also usually limit how many withdrawals you can make per month — often six — though this rule is less strictly enforced than it once was. If you need regular access to your money and want to earn some interest without locking funds away in a CD, a money market account is a middle ground.

Interest compounds, so time in the account matters as much as the rate

Interest compounds when the bank adds earned interest back into your account balance, so you then earn interest on that interest. If you deposit $10,000 at 5% APY and the bank compounds monthly, after one month you earn roughly $41.67 in interest. The next month, you earn interest not just on the original $10,000 but on $10,041.67. Over a year, that compounding effect means you earn about $512.68 instead of exactly $500.

The longer your money sits in the account, the more compounding works in your favor. A $10,000 deposit at 5% APY grows to about $12,763 after five years if you never touch it. That extra $2,763 is interest on top of interest. If you withdraw money and redeposit it, you interrupt the compounding cycle and earn less. This is why high-yield savings accounts and CDs reward patience — the math of compounding is what turns small interest rates into meaningful money over time.

The bank's compounding schedule matters too. Some banks compound daily, some weekly, some monthly. Daily compounding earns you slightly more than monthly compounding on the same rate, but the difference is small unless your balance is very large. When comparing accounts, look at the APY (annual percentage yield) rather than the APR (annual percentage rate) — APY already includes the effect of compounding, so it shows you the real amount you will earn.

Online banks pay more because they have lower costs

Online banks consistently pay higher interest rates than traditional banks because they do not operate physical branches. A brick-and-mortar bank pays rent, utilities, and salaries for tellers and managers at hundreds of locations. An online bank has one or two data centers and a customer service team. Those savings get passed to depositors as higher interest rates.

This does not mean online banks are riskier. Most online banks are FDIC-insured just like traditional banks, and your deposits are protected up to $250,000. The main difference is convenience — you cannot walk into a branch to deposit cash or speak to someone in person. Most online banks let you deposit checks by taking a photo with your phone, and you can transfer money to and from other banks electronically. If you rarely need to deposit cash, an online bank's higher rates make it worth the trade-off.

Interest rates change based on Federal Reserve decisions and economic conditions

The interest rate you earn is not something the bank chooses randomly — it is tied to the federal funds rate, the interest rate the Federal Reserve sets for banks to lend to each other overnight. When the Fed raises this rate, banks raise the rates they pay on savings accounts and CDs. When the Fed lowers it, banks lower theirs. This is why you might see your high-yield savings account rate drop from 5.35% to 4.75% over a few months — the Fed cut rates, and banks followed.

Economic conditions also matter. During periods of high inflation, the Fed raises rates to cool down spending and borrowing. During recessions, the Fed lowers rates to encourage borrowing and spending. As a saver, you benefit when rates are high and lose out when they fall. This is why some people use CDs to lock in a rate when they think rates might drop soon, and why others stay in high-yield savings accounts when they think rates might rise.

You cannot predict what the Fed will do, but you can monitor current rates on sites like Bankrate, DepositAccounts, or the banks' own websites. If you see a rate you like, moving money into that account makes sense. If rates are falling, locking money into a CD might protect you. If rates are rising, keeping money in a high-yield savings account gives you flexibility to move it if a better rate appears.

Frequently Asked Questions

How much interest will I actually earn on $5,000?

At 5% APY, $5,000 earns about $250 per year if compounded annually, or roughly $256 if compounded daily. At 0.01% APY (typical for traditional bank savings), you earn about $0.50 per year. The difference grows with time and larger balances — $50,000 at 5% earns $2,500 per year versus $5 at 0.01%.

Is my money safe in an online bank?

Yes, as long as the bank is FDIC-insured. Check the bank's website or the FDIC's database to confirm. Your deposits are protected up to $250,000 per account type per bank, even if the bank fails. Online banks are regulated the same way as traditional banks.

What happens to my interest if I withdraw money early from a CD?

You pay an early withdrawal penalty, usually equal to a few months of interest. For example, a one-year CD might charge a penalty equal to three months of interest if you withdraw after six months. You keep the interest you already earned, but the penalty reduces your net gain. Some CDs have no penalty for early withdrawal, but they pay a lower rate.

Can I earn interest on a checking account?

Some checking accounts pay interest, but the rates are usually very low — often 0.01% to 0.5% APY. A few online banks and credit unions offer checking accounts with higher rates (1% to 2% APY), but they often require direct deposit or a minimum number of debit card transactions per month. For earning meaningful interest, a savings account, money market account, or CD is more effective.

How often should I move money between accounts to chase higher rates?

Moving money frequently costs you more in lost compounding than you gain from slightly higher rates. If you move $10,000 from a 4.5% account to a 5% account, you gain about $50 per year — but the effort and the interruption to compounding usually is not worth it unless the rate difference is 1% or more. Pick a solid account and leave your money alone to compound.