An online bank account is a deposit account you open and manage entirely through the internet, with no physical branch to visit

An online bank account is a checking or savings account held at a bank that operates only on the internet. You open it online, deposit money electronically, withdraw through ATMs or transfers, and handle all transactions through a website or mobile app. There is no brick-and-mortar branch where you can walk in and speak to a teller—everything happens remotely.

Online banks are real banks, not payment apps or investment platforms. They are insured by the Federal Deposit Insurance Corporation (FDIC), which means your money is protected up to $250,000 per account type at that bank. They offer the same core services as traditional banks: checking accounts, savings accounts, debit cards, and wire transfers. The main difference is how you access them.

Because online banks have no physical locations and fewer employees, they typically charge lower fees and pay higher interest rates on savings accounts than brick-and-mortar banks do. However, you cannot deposit cash in person or speak to someone face-to-face at a branch.

Key Takeaways

  • Online banks are FDIC-insured and hold your money safely, but you manage everything through a website or app instead of visiting a branch.
  • You can open an account in minutes with an email address and valid ID, and fund it by transferring money from another bank account.
  • Online banks typically charge no monthly fees and pay higher interest on savings than traditional banks, because they have lower overhead costs.
  • You can withdraw cash at ATMs using your debit card, but you cannot deposit cash directly unless the bank partners with a retail network.
  • Transfers between your online bank and another bank usually take one to three business days, depending on the transfer method.

How you open an online bank account

Opening an online bank account takes 10 to 20 minutes and requires an email address, a valid government-issued ID (driver's license or passport), and proof of your current address. Most banks accept a recent utility bill, lease, or mortgage statement as proof of address. You will also need your Social Security number so the bank can verify your identity and check for fraud.

The bank will ask you to choose a username and password, set up two-factor authentication (usually a code sent to your phone), and decide whether you want a checking account, savings account, or both. Some banks let you open both at the same time. You do not need to deposit money during signup—you can fund the account after it is open.

Once your account is approved (usually within minutes to a few hours), you can begin transferring money into it from another bank account you own. The bank will provide you with routing and account numbers so you can set up direct deposit from an employer or transfer funds from an existing bank account.

How to fund an online bank account

The most common way to fund an online bank account is an ACH transfer from another bank account you own. You provide your online bank with the routing number and account number of your existing bank, and the online bank pulls money from that account. This transfer usually takes one to three business days. You can set up recurring transfers (for example, every payday) or make one-time transfers.

Some online banks also accept wire transfers, which move money faster (usually same-day or next-day) but may cost $15 to $30 per transfer. A few online banks partner with retail chains like Walmart or CVS, allowing you to deposit cash at those locations—the cash is converted to a deposit in your online account within one to two business days.

You cannot deposit a check by mailing it to an online bank the way you might at a traditional bank. However, many online banks offer mobile check deposit: you photograph the front and back of a check using the bank's app, and the bank credits your account within one to three business days.

Withdrawing money from an online bank account

The primary way to withdraw money is through your debit card. When you open an account, the bank mails you a debit card, which usually arrives within 5 to 10 business days. You can use it to make purchases, withdraw cash at ATMs, and pay bills online. Most online banks do not charge ATM fees at their own ATMs, but some charge a fee if you use an out-of-network ATM—this fee varies by bank and typically ranges from $1 to $3 per transaction.

You can also transfer money out of your online bank account back to another bank account you own. This is an ACH transfer in the opposite direction and takes one to three business days. Some banks let you transfer money instantly to certain other banks, but this depends on whether both banks participate in the same real-time payment network.

If you need cash urgently and do not have a debit card yet, you can withdraw money at a branch of a partner bank. Some online banks partner with networks of physical branches (for example, Alliant Credit Union partners with CO-OP ATMs), so you can walk into a participating location and withdraw cash using your debit card or account number.

Fees and interest rates at online banks

Most online banks charge no monthly maintenance fee, no minimum balance requirement, and no overdraft fees. This is one of the main reasons people choose them over traditional banks. However, some online banks do charge fees for specific actions: wire transfers, expedited transfers, or replacing a lost debit card. Read the fee schedule before you open an account.

Online banks typically pay higher interest on savings accounts than traditional banks. As of now, online savings accounts often pay between 4% and 5% annual percentage yield (APY), while traditional banks may pay 0.01% to 0.5%. The exact rate changes based on the Federal Reserve's interest rate decisions, so rates vary from month to month. Checking accounts at online banks usually pay little to no interest, similar to traditional banks.

Interest is calculated daily and deposited monthly. If you keep $10,000 in a savings account earning 4.5% APY, you would earn roughly $450 per year, paid in monthly installments of about $37.50. The exact amount depends on the bank's compounding method and the current rate.

Security and FDIC insurance at online banks

Online banks use the same security tools as traditional banks: encryption, two-factor authentication, fraud monitoring, and secure login. Your login credentials are encrypted, meaning the bank cannot see your password even if someone hacks their system. Two-factor authentication requires you to enter a code sent to your phone or email before you can log in, which prevents someone from accessing your account even if they know your password.

All deposits at an online bank are insured by the FDIC up to $250,000 per account type per bank. This means if the bank fails, the FDIC will reimburse you for your money. Checking accounts and savings accounts are separate account types, so you are covered up to $250,000 in checking and $250,000 in savings at the same bank. If you have multiple online bank accounts at different banks, each account is insured separately.

If someone fraudulently uses your debit card or transfers money without your permission, you are protected by federal law. You must report the fraud within 60 days of the transaction appearing on your statement. The bank will investigate and typically refund the money within 10 business days if fraud is confirmed.

Online banks versus traditional banks: what changes

The main trade-off is convenience versus personal service. Online banks are faster to open, cheaper to use, and pay higher interest. You can manage your account from anywhere at any time. Traditional banks offer in-person support, the ability to deposit cash at a branch, and sometimes lower fees on specific services like wire transfers.

If you need to deposit cash regularly, a traditional bank or a hybrid bank (one with both online and physical branches) may be better. If you rarely use cash and want to maximize interest on savings, an online bank is usually the better choice. Many people use both: an online bank for savings and a traditional bank for everyday checking and cash deposits.

Online banks also tend to have fewer customer service options. Most offer support through email, chat, or phone, but not in person. If you prefer to speak to someone face-to-face, this may be a drawback. However, most online banks have 24/7 phone support, which traditional banks often do not offer.

Frequently Asked Questions

Is my money safe in an online bank?

Yes. Online banks are FDIC-insured, meaning your deposits are protected up to $250,000 per account type. They use the same security encryption and fraud protection as traditional banks. The main risk is user error—if you share your password or fall for a phishing email, someone could access your account, but the bank will refund fraudulent transactions if you report them within 60 days.

How long does it take to transfer money from an online bank to another bank?

Standard ACH transfers take one to three business days. Some online banks offer instant transfers to certain other banks if both participate in real-time payment networks, but this is not available everywhere. Wire transfers are faster (same-day or next-day) but usually cost $15 to $30.

Can I use an online bank if I need to deposit cash?

Not directly at a branch, but many online banks partner with retail chains or ATM networks where you can deposit cash. The cash is converted to a deposit within one to two business days. If your online bank does not offer this, you can deposit cash at a traditional bank and transfer the money to your online account via ACH.

What happens if an online bank goes out of business?

The FDIC steps in and protects your deposits up to $250,000 per account type. You will be refunded or your account will be transferred to another FDIC-insured bank. This has happened only a handful of times in recent history, and customers have always been protected.

Do I need a minimum balance to open an online bank account?

Most online banks have no minimum balance requirement. You can open an account with $0 and fund it later. However, some online banks require a small initial deposit (usually $25 to $100) to activate the account. Check the specific bank's requirements before you sign up.