Banking is how you store money safely and move it to pay for things

A bank is a business that holds your money in an account, protects it, and lets you withdraw it or send it to other people. When you deposit cash or a check, the bank keeps it in a vault or electronic system. When you write a check, use a debit card, or set up a transfer, the bank moves that money from your account to someone else's. The bank charges you fees for some services and pays you interest on savings accounts — a small percentage of your balance, added monthly or yearly.

Banking exists because moving large amounts of cash is dangerous, and keeping it at home is risky. A bank account gives you a record of every transaction, proof that you paid a bill, and legal protection if something goes wrong. If someone steals your debit card, the bank can reverse the charge. If a check bounces, the bank tells you. If you dispute a transaction, the bank investigates.

Key Takeaways

  • A bank holds your money in an account, lets you withdraw it, and moves it to pay bills or send to other people.
  • Banks charge fees for overdrafts, transfers, and account maintenance, though many checking accounts have no monthly fee.
  • Your money in a bank account is insured up to $250,000 per account type by the FDIC, a federal agency that protects depositors if the bank fails.
  • Banks make money by lending out deposits at higher interest rates than they pay you, so they profit on the difference.
  • You can move money between banks, and you can close an account and take your balance with you at any time.

How banks make money and why they exist

Banks profit by borrowing your money at a low rate and lending it to other customers at a higher rate. If you have a savings account earning 0.01% interest per year, the bank takes that same money and lends it to someone buying a house at 6% or 7% interest. The bank keeps the difference. This is how banks pay their staff, maintain their buildings, and stay in business.

Banks also charge you directly: overdraft fees when you spend more than your balance, monthly maintenance fees on some accounts, ATM fees if you use another bank's machine, wire transfer fees, and fees to stop payment on a check. Many banks waive monthly fees if you keep a minimum balance or set up direct deposit. Reading your account agreement tells you which fees apply to your specific account.

What FDIC insurance means for your money

The Federal Deposit Insurance Corporation (FDIC) is a government agency that insures bank deposits. If your bank fails and closes, the FDIC pays you back up to $250,000 per account type at that bank. This means if you have $100,000 in a checking account and $100,000 in a savings account at the same bank, both are covered — they count as separate account types. If you have $300,000 in one checking account, only $250,000 is insured.

FDIC insurance does not cover money in investment accounts, money market accounts at brokerages, or cash kept outside a bank. It only covers deposits at banks that are FDIC members. Nearly all banks are FDIC members, but you can check the FDIC website to confirm your bank is covered. If you have more than $250,000, you can open accounts at multiple banks to insure all of it.

The difference between checking and savings accounts

A checking account is designed for frequent 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. Most checking accounts pay no interest or very little interest. They may have a monthly fee, but many banks waive it if you meet conditions like keeping a minimum balance or receiving direct deposit.

A savings account is designed to hold money you are not spending right away. It pays interest on your balance, though the rate is usually low — often less than 1% per year. Savings accounts limit how many withdrawals you can make per month, though this rule is less strict now than it used to be. Some banks offer high-yield savings accounts that pay 4% to 5% interest, but they usually require a larger opening deposit.

How money moves in and out of your account

Money enters your bank account through deposit: you hand cash to a teller, mail a check, or set up direct deposit from your employer. The bank credits your account immediately for cash, but checks take one to three business days to clear — the bank waits for the other bank to confirm the check is real and the account has enough money.

Money leaves your account through withdrawal: you use an ATM, write a check, use your debit card at a store, or request a transfer to another account. Debit card transactions usually post within one business day. Checks take three to five business days after you write them, because the recipient has to deposit them and the banks have to clear them. Wire transfers and ACH transfers (electronic transfers between bank accounts) take one to three business days depending on the type and time of day you send them.

What happens when you do not have enough money

If you try to spend more than your balance, the bank can either decline the transaction or allow it and charge you an overdraft fee — usually $25 to $35 per transaction. Some banks charge multiple overdraft fees in a single day if you make several purchases over your limit. You then owe the bank the amount you overspent plus the fee.

If you have overdraft protection linked to a savings account or credit card, the bank automatically transfers money from that account to cover the shortfall, usually charging a smaller fee or no fee. If you do not have protection and do not pay the overdraft, the bank may close your account and report you to ChexSystems, a database that other banks check before opening new accounts for you.

How to choose a bank and what to compare

Banks differ in monthly fees, interest rates on savings, overdraft policies, ATM networks, and customer service. A bank with no monthly fee and a large ATM network may be better for everyday use. A bank with high-yield savings may be better if you are saving money. Online banks often have lower fees and higher interest rates because they have no physical branches, but they may not offer checking accounts or may limit how you deposit checks.

Before opening an account, read the fee schedule and account agreement. Ask whether the monthly fee is waived if you keep a minimum balance or set up direct deposit. Check whether the bank is FDIC insured. Look at the interest rate on savings accounts — rates change, but you can compare current rates on bank websites. If you already have a bank account, you can move to a different bank at any time by opening a new account and transferring your balance.

Frequently Asked Questions

Can a bank take my money if I owe them?

Yes. If you owe the bank money — for example, an unpaid loan or overdraft — the bank can take money from your account to pay the debt without asking your permission first. This is called a setoff. If you dispute the debt, you can contact the bank in writing to challenge it, but the bank can still hold the money while investigating.

What is the difference between a bank and a credit union?

A credit union is a nonprofit organization owned by its members, while a bank is a for-profit business. Credit unions often charge lower fees and pay higher interest on savings, but they may have fewer ATMs and branches. Both are insured by federal agencies — banks by the FDIC and credit unions by the NCUA.

How long does it take to open a bank account?

Opening an account usually takes 10 to 15 minutes in person or online. You will need a government ID, Social Security number, and an initial deposit. The bank checks ChexSystems and may check your credit. You can start using the account immediately, though checks and transfers may take several business days to clear.

What happens to my money if the bank goes out of business?

The FDIC takes over the bank and pays you back up to $250,000 per account type. This process usually takes a few days. Your money is safe as long as it is under the $250,000 limit and the bank is FDIC insured. The FDIC has never failed to pay a depositor.

Can I have accounts at multiple banks?

Yes. You can open accounts at as many banks as you want. Each account is insured separately up to $250,000 by the FDIC, so if you have $300,000, you can split it between two banks to insure all of it. Having multiple accounts can also give you backup access to money if one bank has a system outage.