An online bank is a financial institution that operates entirely or almost entirely through the internet, with no physical branches you can walk into

You open an account, deposit money, transfer funds, and pay bills all through a website or mobile app. The bank itself has no storefronts—it exists only as a digital operation. Some online banks are subsidiaries of larger traditional banks (like Ally, which is owned by a former GMAC), while others are independent companies built from the ground up to operate online.

The core difference from a traditional bank is not what services they offer, but how you access them. You cannot hand a teller a check or withdraw cash at a branch. Instead, you deposit checks by photographing them with your phone, withdraw cash at ATMs (usually for free at certain networks), and handle everything else through your computer or phone.

Key Takeaways

  • Online banks have no physical branches, so all account management happens through websites or apps rather than in person.
  • Your money is insured the same way as traditional bank deposits—up to $250,000 per account type through the FDIC if the bank is FDIC-insured.
  • Online banks typically charge lower or no monthly fees because they have fewer physical costs, and often pay higher interest rates on savings accounts.
  • You can deposit checks by taking a photo with your phone, but you cannot deposit cash directly—you must use an ATM or transfer from another account.
  • Customer service is usually available by phone, email, or chat, but not in person, so you need to be comfortable solving problems without walking into a branch.

How deposits and withdrawals work at an online bank

Depositing money at an online bank depends on the form it takes. If you have a check, you use mobile check deposit—you photograph the front and back of the check through the bank's app, and the bank processes it electronically. This usually takes one to two business days. If you have cash, you cannot deposit it directly into an online bank account. Instead, you must transfer money from another account you control (like a traditional bank account), use a peer-to-peer payment app like Venmo or PayPal, or withdraw cash at an ATM that belongs to the bank's network.

Withdrawing money works the opposite way. You can withdraw cash at ATMs—most online banks partner with ATM networks so you can use thousands of machines without a fee. Some online banks reimburse ATM fees charged by other banks, which effectively gives you access to any ATM. If you need cash and do not have an ATM nearby, you can transfer money to a traditional bank account you own and withdraw from there, though this takes a day or two.

Why online banks charge lower fees and pay higher interest

Online banks have significantly lower operating costs than traditional banks because they do not maintain buildings, employ tellers, or run branch networks. They pass some of these savings to customers through lower or eliminated monthly maintenance fees. Many online banks charge nothing to hold a checking or savings account, while traditional banks often charge $10 to $15 per month unless you meet balance or deposit requirements.

The interest rates on savings accounts and money market accounts are also typically higher at online banks. A traditional bank might pay 0.01% annual interest on a savings account, while an online bank might pay 4% to 5% (rates vary and change frequently). This difference compounds over time—on $10,000, the difference between 0.01% and 4.5% is roughly $450 per year. Online banks can afford to pay more because they have lower costs and can lend out deposits more efficiently.

FDIC insurance and whether your money is safe

Money in an online bank account is insured the same way as money in a traditional bank—through the Federal Deposit Insurance Corporation (FDIC), provided the bank is FDIC-insured. The FDIC guarantees that if the bank fails, you will not lose up to $250,000 per account type per bank. This means if you have a checking account and a savings account at the same FDIC-insured online bank, each is covered separately up to $250,000.

Before opening an account, check whether the online bank is FDIC-insured. You can search the FDIC's Bank Find tool on their website to confirm. Nearly all legitimate online banks are FDIC-insured, but it is worth verifying. If a bank is not FDIC-insured, your deposits have no federal protection if the bank fails.

What you cannot do at an online bank

You cannot deposit cash directly, as mentioned above. You also cannot speak to someone in person about account problems, loan applications, or complex transactions. Customer service is available by phone, email, or chat, but not face-to-face. This works fine for routine questions, but if you need to discuss a mortgage, a business loan, or a complicated dispute, you may find the lack of in-person service frustrating.

Some online banks do not offer certain products that traditional banks do. Many do not have credit cards, investment accounts, or mortgage lending. If you need a full range of financial services under one roof, an online bank alone may not be enough—you might use an online bank for checking and savings, and a traditional bank or brokerage for other needs.

Online banks versus traditional banks: what matters for your decision

Choose an online bank if you are comfortable managing money through an app, rarely need to deposit cash, and want to avoid monthly fees and benefit from higher interest rates. Choose a traditional bank if you deposit cash regularly, prefer to speak with someone in person, or need a wide range of services like mortgages or investment accounts.

Many people use both. You might keep a checking account at an online bank for its low fees and use a traditional bank's ATM network for cash withdrawals, while maintaining a savings account at a traditional bank for in-person access if you ever need it. The choice depends on how you actually use banking services, not on which type is objectively better.

Frequently Asked Questions

Is my money safe at an online bank?

Yes, if the bank is FDIC-insured. Your deposits are protected up to $250,000 per account type, the same as at a traditional bank. Check the FDIC's Bank Find tool to confirm the bank is insured before you open an account.

Can I get a debit card from an online bank?

Yes. Most online banks issue debit cards that work anywhere Visa or Mastercard is accepted. You can use it to withdraw cash at ATMs and make purchases online or in stores.

What happens if I need to deposit cash?

You cannot deposit cash directly at an online bank. Transfer money from another account you own, use a peer-to-peer payment app, or withdraw cash from an ATM instead. Some online banks partner with retail locations like Walmart where you can deposit cash for a fee.

Do online banks offer checking accounts?

Yes. Most online banks offer both checking and savings accounts. Checking accounts typically have no monthly fee, no minimum balance requirement, and come with a debit card and online bill pay.

Can I still use ATMs if I bank online?

Yes. Online banks partner with ATM networks so you can withdraw cash at thousands of machines, usually for free. Some reimburse fees charged by out-of-network ATMs, giving you access to nearly any ATM.