A bank account is a record the bank keeps of your money, and a set of rules about what you can do with it

When you open a bank account, you give the bank money to hold. The bank records how much you have, lets you add more, and lets you take money out. In exchange, the bank uses your money to lend to other people and businesses — that is how banks make money. You get a debit card or checkbook so you can spend what is in the account without walking into the branch every time. The bank also pays you a small amount of interest on some account types, though the rate is usually very low.

The account itself is not a physical thing. It is a record in the bank's computer system. Your money is not sitting in a vault with your name on it. Instead, the bank pools all customer deposits and uses them for loans and investments. The Federal Deposit Insurance Corporation (FDIC) insures deposits up to $250,000 per account holder per bank, so if the bank fails, you get your money back up to that limit.

Key Takeaways

  • A bank account is a record of money you deposit with a bank, plus the rules about how you can access and spend it.
  • The bank pays you interest on some accounts (usually very small amounts) and uses your deposits to make loans to others.
  • Your deposits are insured by the FDIC up to $250,000 per account type at each bank, so your money is protected if the bank fails.
  • Different account types have different rules: checking accounts let you spend freely, savings accounts limit withdrawals but pay slightly higher interest, and money market accounts fall between the two.
  • You access your account through a debit card, checks, online transfers, or in-person at a branch.

The three main account types and what each one does

Checking accounts are designed for frequent spending. You can write checks, use a debit card, set up automatic bill payments, and move money out as often as you want. Most checking accounts pay no interest or nearly none. Some banks charge a monthly fee, though many offer free checking if you meet conditions like keeping a minimum balance or setting up direct deposit.

Savings accounts are meant for money you want to keep rather than spend regularly. You can still withdraw money, but the bank limits how many withdrawals you can make per month (often six). In exchange, the bank pays you interest — usually between 0.01% and 5% per year, depending on the bank and the current interest rate environment. The interest rate changes over time and varies widely between banks, so it is worth comparing.

Money market accounts sit between the two. They pay higher interest than checking accounts but lower than some savings accounts. They usually come with a debit card or checkbook so you can spend more freely than with a savings account, but the bank may limit how many checks you can write per month. Minimum balance requirements are often higher than for checking or savings accounts.

How interest works and why rates vary so much

When you keep money in a savings or money market account, the bank pays you interest — a percentage of your balance, calculated and added to your account on a set schedule (usually monthly or daily). The interest rate the bank offers you depends on what the Federal Reserve has set as its benchmark rate. When the Fed raises rates, banks raise the rates they pay on savings accounts. When the Fed lowers rates, banks lower what they pay you.

The rate also depends on the bank itself. Online banks with no physical branches usually pay higher interest because they have lower costs. Traditional banks with many branches often pay less. Credit unions (member-owned financial institutions) sometimes pay higher rates on savings accounts than banks do. It is worth checking several banks and credit unions to see what they currently offer, because the difference between 0.01% and 4.5% on a $10,000 balance is real money over a year.

Interest is calculated on your average daily balance or your ending balance, depending on the bank. Some banks compound interest daily (meaning you earn interest on the interest), while others compound monthly. Daily compounding is better for you, but the difference is usually small unless your balance is very large.

Fees, minimums, and what can cost you money

Many banks charge a monthly maintenance fee, usually between $5 and $15. You can often avoid it by keeping a minimum balance (often $500 to $1,500), setting up direct deposit, or using the bank's online services only. Some banks waive fees for students or seniors.

Other common fees include overdraft fees (charged when you spend more than you have in the account), ATM fees (charged when you use an ATM that is not owned by your bank), and wire transfer fees (charged when you send money to another bank). Overdraft fees are often $30 to $35 per transaction. ATM fees are usually $2 to $3 per use. Some banks offer overdraft protection, which links your checking account to a savings account or credit line so you do not overdraw — this costs less than an overdraft fee but may still charge a small fee.

Read the fee schedule before you open an account. Many online banks have no monthly fees and no ATM fees (or reimburse them), which is why they are popular for people who want to avoid charges.

How to open an account and what you will need

To open a bank account, you will need a government-issued photo ID (a driver's license or passport), proof of your address (a utility bill or lease), and your Social Security number. Some banks also ask for an initial deposit, though many have no minimum. The process takes 15 to 30 minutes in person or online.

If you do not have a photo ID or Social Security number, some banks and credit unions offer accounts for people without these documents, though the rules vary by state and institution. Call ahead to ask what they need.

Once your account is open, the bank will give you a debit card (which arrives by mail in a few days), online access so you can check your balance and move money, and a checkbook if you requested one. You can start depositing money when ready — in person at a branch, through an ATM, by mail, or by setting up direct deposit from your employer.

What happens to your money if the bank fails

The FDIC insures deposits up to $250,000 per depositor per bank per account type. This means if the bank goes out of business, the FDIC will return your money up to $250,000. The insurance covers checking accounts, savings accounts, and money market accounts separately — so if you have $200,000 in a checking account and $200,000 in a savings account at the same bank, both are fully covered.

If you have more than $250,000 at one bank, the amount over $250,000 is not insured. To protect more money, you can open accounts at different banks (each bank's deposits are insured separately) or use account ownership categories like joint accounts or accounts held in trust, which have their own $250,000 limits.

In practice, bank failures are rare in the United States. The last major wave was during the 2008 financial crisis. The FDIC has a fund built from bank fees that pays out when a bank fails, and it has never run out of money.

Moving money in and out: deposits, withdrawals, and transfers

You can put money into your account by depositing cash or checks at a branch or ATM, by setting up direct deposit from your employer, or by transferring money from another bank account. Direct deposit is free and usually takes one business day. Transfers between your own accounts at different banks usually take one to three business days. Deposits of checks at an ATM or mobile app may take two to five business days to clear.

You can take money out by using your debit card at a store, withdrawing cash at an ATM, writing a check, or requesting a wire transfer to another bank. Debit card transactions and ATM withdrawals are usually when ready (or within one business day). Checks take three to five business days to clear. Wire transfers usually take one business day but cost $15 to $50.

Some banks limit how many withdrawals you can make from a savings account per month (often six). Checking accounts have no withdrawal limit. If you exceed the limit on a savings account, the bank may charge a fee or convert your account to a checking account.

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 pay them back later (usually with interest if you do not pay the full balance). Debit cards do not build credit history; credit cards do.

Can I have more than one bank account?

Yes. Many people have a checking account at one bank and a savings account at another, or multiple savings accounts at different banks to earn different interest rates or to keep money separate for different purposes. Each account is insured separately by the FDIC up to $250,000.

What happens if I overdraw my account?

If you spend more money than you have, the bank will either decline the transaction or allow it and charge you an overdraft fee (usually $30 to $35). Some banks offer overdraft protection, which automatically transfers money from a linked account to cover the shortfall for a smaller fee or no fee.

How do I know if a bank is safe?

Check whether the bank is FDIC-insured (the FDIC website has a search tool). All traditional banks are required to be FDIC-insured. Credit unions are insured by the National Credit Union Administration (NCUA), which works the same way. If a bank is not insured by either, your deposits are not protected if the institution fails.

Can I earn more interest by moving my money to a different bank?

Yes. Interest rates vary widely between banks and change frequently. If your current bank pays 0.01% and another bank pays 4.5%, moving your savings could earn you significantly more money over time. Online banks and credit unions often pay higher rates than traditional banks.