A bank account is a record the bank keeps of your money

A bank account is a formal arrangement between you and a bank. You give the bank your money, and the bank holds it, keeps track of how much you have, and lets you withdraw it when you need it. The bank also uses your money to make loans to other people and businesses—that is how banks make money—and they pay you a small amount of interest in return for letting them use your funds.

When you open an account, the bank assigns you an account number. Every deposit you make, every withdrawal, and every payment you send gets recorded under that number. Your account balance is simply the total of all the money in that account at any given moment. The bank sends you a statement—either on paper or online—showing all the transactions and your current balance.

You do not have to keep cash under your mattress or carry large amounts of money with you. Instead, you can store it at the bank and access it through a debit card, checks, transfers, or by walking into a branch and asking for it. The bank is responsible for keeping your money safe and secure.

Key Takeaways

  • A bank account is a contract where you deposit money with a bank, which holds it, tracks it, and lets you withdraw it whenever you need it.
  • The bank pays you interest on the money you keep in the account, though the rate is usually very small.
  • Every transaction—deposits, withdrawals, transfers, payments—is recorded in your account and shown on your monthly or online statement.
  • You can access your money through a debit card, checks, online transfers, or by visiting a branch in person.
  • Banks are required by federal law to insure deposits up to $250,000 per account through the FDIC, so your money is protected even if the bank fails.

The main types of accounts: checking and savings

Most people use one of two types of accounts. A checking account is designed for frequent, everyday transactions. You can write checks, use a debit card, set up automatic bill payments, and transfer money in and out as often as you want. There are usually no limits on how many times you can withdraw or spend from a checking account in a month.

A savings account is designed to hold money you are not spending right now. It earns interest—a small percentage that the bank pays you annually—but it typically has limits on how many times you can withdraw per month. Some banks allow six withdrawals per month; others allow fewer. The trade-off is that you earn a bit more interest than you would in a checking account.

Many people have both: a checking account for bills and daily expenses, and a savings account for an emergency fund or money they are saving toward a goal. Some banks offer other account types, like money market accounts (which earn higher interest but require a larger minimum balance) or certificates of deposit (which lock your money away for a set period in exchange for higher interest).

How deposits and withdrawals work

When you deposit money into your account, the bank records the amount and adds it to your balance. You can deposit cash at an ATM or a branch, or you can deposit a check by taking a photo of it on your phone or mailing it to the bank. If you deposit a check, the bank has to wait for the check to clear—usually one to three business days—before the money is fully yours and you can withdraw it.

When you withdraw money, the bank subtracts it from your balance. You can withdraw cash from an ATM, ask a teller at the branch to give you cash, or transfer money to another account. If you spend money using your debit card, that is also a withdrawal—the bank deducts it from your account, usually within one business day.

Your account balance changes constantly as money moves in and out. The bank shows you your current balance when you check online, use an ATM, or call customer service. However, there is sometimes a lag: a transaction you made today might not show up in your balance for a day or two, especially if it is a check or a transfer.

Fees and minimum balances

Many banks charge fees for certain actions or if your account falls below a minimum balance. Common fees include overdraft fees (charged if you spend more money than you have in your account), monthly maintenance fees, ATM fees (if you use an ATM that does not belong to your bank), and fees for stopping payment on a check. Some banks waive these fees if you keep a certain amount of money in the account or if you set up direct deposit of your paycheck.

Before you open an account, ask the bank what fees they charge and what the minimum balance requirement is. Many online banks and credit unions charge no monthly fees and have no minimum balance, which makes them cheaper than large national banks. If you are on a tight budget, comparing fees across banks can save you money over time.

How the bank protects your money

The federal government requires banks to be insured by the Federal Deposit Insurance Corporation (FDIC). This means that if your bank fails or goes out of business, the FDIC will pay you back up to $250,000 per account type per bank. So if you have $50,000 in a checking account and $100,000 in a savings account at the same bank, both are fully protected.

Banks also use security measures to protect your account from fraud. They monitor for suspicious activity, they encrypt your online login, and they require a PIN or password to access your account. If someone steals your debit card or your account number and makes unauthorized transactions, you can report it to the bank and they will usually reverse the charges.

You also have a responsibility to protect your account. Do not share your PIN, password, or account number with anyone. Do not use the same password for your bank account as you use for other websites. Check your statement regularly to spot fraud early. If you see a transaction you did not make, report it to the bank right away.

How interest works on your account

Banks pay you interest on the money you keep in your account. The interest rate varies depending on the type of account, the bank, and the current economic conditions. Right now, savings accounts typically earn between 0.01% and 5% per year, depending on the bank. Checking accounts usually earn little to no interest.

Interest is calculated on your average daily balance. If you have $1,000 in a savings account earning 1% annual interest, the bank will pay you about $10 per year (though it is usually paid monthly in smaller amounts). The longer you leave money in the account, the more interest you earn. Some accounts compound interest, meaning you earn interest on your interest, which makes your money grow faster.

Online banks and credit unions often pay higher interest rates than large national banks because they have lower overhead costs. If you are saving money and want to earn the most interest possible, compare rates across different banks before you decide where to open your account.

What happens when you close an account

If you no longer want an account, you can close it. Contact the bank and ask them to close the account. They will ask you what to do with any remaining balance—you can have them mail you a check, transfer it to another account, or withdraw it in cash. Once the account is closed, you cannot use it anymore, and the bank will stop charging any monthly fees.

Before you close an account, make sure you have moved any automatic payments or direct deposits to a new account. If you close an account without updating your bill payments, those payments will fail and you may be charged late fees by the companies you owe money to.

Frequently Asked Questions

What is the difference between a debit card and a credit card?

A debit card takes money directly from your bank account when you use it. A credit card borrows money from the credit card company, and you have to pay them back later. With a debit card, you can only spend money you already have. With a credit card, you can spend money you do not have yet, but you will owe interest if you do not pay the full balance.

Can I have more than one bank account?

Yes. Many people have accounts at multiple banks for different purposes—one bank for checking, another for savings, a third for a business account. Each account is insured separately by the FDIC up to $250,000, so spreading your money across multiple banks can protect more of it if a bank fails.

What happens if I overdraft my account?

If you spend more money than you have in your account, the bank may allow the transaction to go through and charge you an overdraft fee, usually $25 to $35 per transaction. Some banks will decline the transaction instead and charge you a fee for the declined transaction. You can ask your bank to turn off overdraft protection to prevent this from happening.

How long does it take for money to show up after I deposit it?

Cash deposits at an ATM or branch usually show up in your account within one business day. Checks take longer—typically one to three business days for the check to clear. Transfers between accounts at the same bank are usually instant. Transfers between different banks take one to three business days.

Do I need a bank account to receive my paycheck?

No, but most employers require one. If you do not have a bank account, you can ask your employer to pay you by check instead, or you can use a check-cashing service, though they charge a fee. Having a bank account is the cheapest and safest way to receive your paycheck.