An online savings account holds your money at a bank or credit union that operates without physical branches

An online savings account is a deposit account you open and manage entirely through a website or mobile app. The bank or credit union that holds your account has no physical locations — you cannot walk in and withdraw cash at a teller window. Instead, you move money in and out through electronic transfers, ATM networks, or checks. The bank pays you interest on the balance you keep in the account, which is money the bank adds to your account as compensation for letting them use your deposits.

The account itself works the same way a traditional savings account does: you deposit money, the bank holds it, and you can withdraw it when you need it. The main difference is that online banks have lower overhead costs than banks with branch locations, so they typically offer higher interest rates on savings. You will not earn much interest — rates change constantly and are usually between 4 and 5 percent annually at this writing — but it is more than you would earn in a checking account or under a mattress.

Key Takeaways

  • Online banks have no physical branches, so you manage deposits and withdrawals through their website, app, or electronic transfers.
  • Your money is insured by the FDIC (Federal Deposit Insurance Corporation) up to $250,000 per account holder per bank, the same as at a traditional bank.
  • Interest rates at online banks are usually higher than at brick-and-mortar banks because the bank has lower costs, but rates change frequently and vary by bank.
  • Withdrawing money takes one to three business days because the transfer happens electronically rather than instantly, and some banks limit how many times per month you can withdraw.
  • You need an internet connection and a way to verify your identity to open an account, but you do not need to visit a branch or speak to anyone on the phone.

How money gets into and out of an online savings account

You deposit money into an online savings account by linking it to a checking account at another bank. You log into the online bank's website or app, enter your other bank's account number and routing number, and initiate a transfer. The money moves electronically — usually within one to three business days — from your checking account to your savings account. Some online banks also accept direct deposit, meaning your employer can send your paycheck straight to the savings account instead of your checking account.

Withdrawing money works in reverse. You request a transfer from your savings account back to your checking account (or to another bank account you own), and the money arrives in one to three business days. Some online banks also offer a debit card or ATM access, which lets you withdraw cash at ATMs without waiting for a transfer. However, many online banks do not offer debit cards, so check before you open an account if instant cash access matters to you.

Be aware that some banks impose a limit on how many times per month you can withdraw money from a savings account — this is a federal rule, though many banks have relaxed it in recent years. If you exceed the limit, the bank may charge a fee or close the account. Check the bank's terms before you open an account to see what the withdrawal limit is.

Where your money actually sits and who protects it

When you deposit money into an online savings account, the bank holds that money in its own accounts and uses it to make loans to other customers and to invest. You do not own a physical vault or a specific pile of cash — you own a claim on the bank to pay you that amount whenever you ask for it. The bank keeps a fraction of all customer deposits on hand and lends out the rest, which is how it makes money to pay you interest.

Your deposits are protected by the FDIC (Federal Deposit Insurance Corporation), a federal agency that insures bank deposits. If the bank fails and cannot pay you back, the FDIC will pay you up to $250,000 per account holder per bank. This protection applies to online banks the same way it applies to traditional banks — the fact that you cannot walk into a branch does not change the insurance. If you have more than $250,000 to save, you can open accounts at multiple banks to keep all your money insured.

Credit unions offer a similar protection through the NCUA (National Credit Union Administration), which insures deposits up to $250,000 per member per credit union. Some online banks are actually credit unions, so check which agency insures your account when you open it.

How interest is calculated and when you receive it

Interest on an online savings account is expressed as an APY (Annual Percentage Yield), which tells you what percentage of your balance the bank will add to your account over one year. If you have $10,000 in an account with a 4.5 percent APY, the bank will add approximately $450 to your account over twelve months — though the actual amount depends on how long the money sits in the account and whether the rate changes.

Banks calculate interest daily but usually deposit it into your account monthly. This means the bank looks at your balance at the end of each day, adds up all those daily balances for the month, and then adds the interest to your account on the first day of the next month. If you withdraw money partway through the month, you earn less interest that month because your average balance was lower.

Interest rates change frequently — sometimes weekly — based on what the Federal Reserve does with interest rates. When the Fed raises rates, online banks usually raise their savings rates within days. When the Fed lowers rates, online banks lower their rates too, sometimes within hours. This means the rate you see today may not be the rate you earn next month. Check your bank's website regularly to see if the rate has changed, or set up an alert if the bank offers one.

What happens when you need to access your money quickly

If you need cash immediately, an online savings account is slower than a traditional bank with branches. A transfer to your checking account takes one to three business days, so you cannot walk in and withdraw cash the same day. If your online bank offers ATM access or a debit card, you can withdraw cash at an ATM right away, but not all online banks offer this.

Plan ahead if you know you will need cash. Request the transfer a few days before you need the money, or keep a small amount in your checking account for emergencies. Some online banks partner with ATM networks like Allpoint or MoneyPass, which means you can withdraw cash at thousands of ATMs nationwide without a fee — check whether your bank participates before you open an account.

If you need to move money to a different bank account (not just your checking account), the transfer still takes one to three business days. Some banks offer faster transfers for an extra fee, but most do not. This is a limitation to consider if you move money between accounts frequently.

Fees and costs you might encounter

Most online savings accounts have no monthly maintenance fee, no minimum balance requirement, and no fee to open or close the account. This is one of the main advantages of online banks — they keep costs low and pass the savings to you in the form of higher interest rates.

However, some online banks do charge fees in specific situations. Common fees include: a fee if you exceed the monthly withdrawal limit, a fee for a wire transfer, a fee if your balance drops below a certain amount, or a fee if you close the account within a certain time period. Read the bank's fee schedule before you open an account so you know what to expect.

If you link your online savings account to a checking account at a different bank, your checking account bank may charge a fee for the transfer — though most do not. Your online bank will not charge you for receiving a transfer from another bank.

How to open an online savings account and what you need

To open an online savings account, you need a computer or smartphone with internet access, a valid government-issued ID (driver's license, passport, or state ID), and proof of your Social Security number. Most banks ask for your SSN during the application process and verify it electronically.

The application takes about ten minutes. You enter your personal information, choose a username and password, and link a checking account at another bank so you can transfer money in. Some banks verify your identity by asking security questions about your credit history. Others use a service that checks your ID against government databases. A few banks still require you to upload a photo of your ID or speak to someone on the phone, but this is becoming less common.

Once your application is approved — usually within a few hours or one business day — your account is active and you can start transferring money. The first transfer from your checking account may take longer than usual (up to five business days) because the bank is verifying that you own both accounts.

Frequently Asked Questions

Is my money safe in an online bank if I have never seen the building?

Yes. Online banks are regulated by the same federal agencies as traditional banks, and your deposits are insured by the FDIC up to $250,000. The bank's lack of physical branches does not affect the safety of your money or the insurance protection. Check that the bank displays an FDIC or NCUA logo on its website to confirm it is insured.

Can I withdraw money from an online savings account anytime I want?

You can request a withdrawal anytime, but the money takes one to three business days to arrive in your checking account. Some banks limit how many withdrawals you can make per month — check the bank's terms. If you need cash immediately, use an ATM if your bank offers ATM access, or keep emergency cash in your checking account.

What is the difference between an online savings account and a money market account?

A money market account usually offers a higher interest rate than a savings account but requires a larger minimum balance and may limit withdrawals more strictly. Both are insured by the FDIC. Choose a savings account if you want simplicity and low minimums; choose a money market account if you have a larger balance and want a higher rate.

Do I have to pay taxes on the interest I earn?

Yes. Interest is taxable income. At the end of each year, the bank sends you a 1099-INT form showing how much interest you earned, and you report that amount on your tax return. The bank also reports it to the IRS. Keep records of your interest earnings for tax time.

What happens if the online bank goes out of business?

The FDIC takes over and pays you your balance up to $250,000. This process usually takes a few weeks. You will not lose money as long as your balance is within the FDIC insurance limit. The FDIC has a tool on its website where you can check whether a bank is insured and what your coverage limit is.