Most online savings accounts have no minimum balance requirement at all
The majority of online savings accounts do not require you to keep a minimum balance to open or maintain the account. You can deposit $1, $10, or $100 and keep the account active. This is one of the main reasons online banks can offer higher interest rates than brick-and-mortar banks — they have lower overhead costs and do not need to enforce balance minimums to stay profitable.
However, some online banks do set a minimum, and the amount varies widely. A few require $25 or $100 to open. Others require $500, $1,000, or even $2,500 to earn the advertised interest rate. The key is that these minimums are not universal — you need to check the specific bank's terms before you open an account.
The difference between "no minimum to open" and "minimum to earn interest" matters. You might be able to open an account with $50, but if the bank requires $500 to earn their advertised rate, your money will sit in a lower-rate savings tier until you meet that threshold.
Key Takeaways
- Most online savings accounts have zero minimum balance requirement to open or maintain the account.
- Some online banks require a minimum balance to earn their advertised interest rate, typically between $100 and $2,500.
- A few online banks charge a monthly fee if your balance falls below a set amount, though this is less common than it was five years ago.
- You should check the account terms before opening to know whether a minimum applies to earning interest or to avoiding fees.
When an online bank does charge for falling below minimum
A small number of online savings accounts still impose a monthly maintenance fee if your balance drops below a certain level. This is rarer than it used to be, but it still happens. The fee is typically $5 to $10 per month, and the minimum balance threshold is usually $500 to $2,500.
The catch is that these fees can compound quickly. If you fall below the minimum and the bank charges $10 a month, that $10 comes out of your balance, which may push you further below the minimum the next month. Over a year, a $10 monthly fee costs $120 — money that could have earned interest instead.
Before you open an account, look for language like "monthly maintenance fee" or "balance requirement" in the terms. If the bank does not mention a fee, you can usually assume there is none. Many banks advertise "no monthly fees" explicitly because they know this is a selling point.
How interest rate tiers work with minimum balances
Some online banks use a tiered interest rate system: the more you have on deposit, the higher the rate you earn. For example, a bank might offer 4.00% APY on balances of $10,000 or more, 3.75% on balances between $1,000 and $9,999, and 3.50% on balances below $1,000.
This is different from a minimum balance requirement. You can keep $500 in the account and earn 3.50% — the bank will not close your account or charge you a fee. But you will earn less interest than someone with $10,000 on deposit. The tiered structure is a way for banks to incentivize larger deposits without penalizing smaller ones.
If you are comparing online savings accounts, pay attention to which tier your expected balance falls into. A bank advertising 4.50% APY might only pay that rate to customers with $25,000 or more. If you plan to keep $5,000 on deposit, you need to know what rate you will actually receive.
Why online banks can afford to drop minimum balance rules
Traditional banks charge minimum balance fees because they have physical branches, tellers, and higher operating costs. They use the fees to offset the cost of maintaining accounts that do not generate enough loan revenue. Online banks have no branches and no tellers, so they do not need to recover those costs from account holders.
Instead, online banks make money from the interest rate spread — they pay you a lower rate than they charge borrowers for mortgages and personal loans. Because they can operate on a smaller spread due to lower costs, they can offer higher rates to savers without requiring a minimum balance.
This is why you will almost never see a minimum balance requirement at a pure online bank like Marcus, Ally, or Wealthfront. They simply do not need the fee revenue. You are more likely to encounter a minimum at a regional bank that also operates branches, or at a bank that is trying to discourage very small accounts.
What happens if you drop below the minimum after opening
If your account has a minimum balance requirement and your balance falls below it, the outcome depends on the bank's policy. Some banks will charge a monthly fee. Others will drop you to a lower interest rate tier. A few will close the account after a set period of time — typically 30 to 90 days — if the balance does not recover.
Account closure is rare, but it does happen. If a bank closes your account due to low balance, they will send you a check or transfer the remaining balance to another account you specify. You will not lose the money, but you will lose the account and any interest you might have earned.
To avoid this, check your account terms for the specific consequences of falling below minimum. If the bank charges a fee, you know exactly what it will cost. If the bank closes accounts for low balance, you know to either maintain the minimum or move your money elsewhere.
How to find an online savings account with no minimum
If you want to avoid minimum balance requirements entirely, look for banks that explicitly state "no minimum balance" in their account features. Many online banks list this prominently because it is a competitive advantage.
You can also check the account terms document, which every bank publishes online. Search for the words "minimum," "balance," and "fee." If the document does not mention a minimum balance requirement, there is not one. If it does mention one, the terms will spell out the exact amount and the consequences of falling below it.
Some banks also offer multiple savings products — a basic savings account with no minimum and a high-yield savings account with a minimum. If you have a small amount to save, the basic account might be the right choice. As your balance grows, you can move money to the higher-rate account.
Minimum balance requirements versus overdraft protection
Do not confuse a minimum balance requirement with overdraft protection. A minimum balance is the amount you are supposed to keep in the account to avoid fees or earn a certain rate. Overdraft protection is a separate service that covers transactions when your balance goes negative.
Most online savings accounts do not offer overdraft protection because savings accounts are not designed for frequent transactions. You cannot overdraw a savings account the way you can overdraw a checking account. If you try to withdraw more than you have, the transaction will simply be declined.
If you need overdraft protection, you are looking at a checking account, not a savings account. Checking accounts are more likely to have minimum balance requirements and overdraft fees because they are designed for daily spending.
Frequently Asked Questions
Can I earn interest if my balance is below the minimum?
Yes, in most cases. If a bank has a minimum balance to earn the advertised rate, you can still earn a lower rate on smaller balances. Some banks do not offer any interest on balances below the minimum, so check the terms. A few banks simply close accounts that stay below minimum for too long.
Do online savings accounts charge a fee if I don't meet the minimum?
Most do not. The majority of online banks have no minimum balance requirement at all. If a bank does have a minimum, it will charge a monthly fee (typically $5 to $10) or drop you to a lower interest rate tier. The bank's terms will specify which consequence applies.
What is the typical minimum balance for an online savings account?
There is no typical minimum because most online banks do not require one. Among banks that do set a minimum, amounts range from $100 to $2,500. A few banks require $25 or $50. Check the specific bank's account terms to know what applies to you.
Will my account close if I don't maintain the minimum?
Account closure for low balance is uncommon but does happen at some banks. Most banks will either charge a monthly fee or reduce your interest rate instead. The account terms will tell you which consequence applies. If closure is possible, the bank will usually give you 30 to 90 days to bring the balance back up before closing.
Can I move money between accounts if I'm below the minimum?
Yes. Transferring money in or out does not violate any rule. If you are below the minimum and want to avoid a fee, you can deposit more money to bring the balance up. If you want to close the account, you can withdraw the balance at any time, regardless of whether it meets the minimum.