Most high yield savings accounts have no minimum balance requirement, but some do—and the threshold varies widely by bank

A minimum balance requirement is the smallest amount of money you must keep in an account to avoid a fee or to earn the advertised interest rate. At high yield savings accounts, this requirement is uncommon. Many of the largest online banks—including Marcus, Ally, and American Express Personal Savings—advertise zero minimum balance. You can open an account with $1 and start earning interest when ready.

But "most" is not "all." Some banks do impose minimums, and they range from $500 to $25,000 or more. A few banks waive the minimum if you set up automatic monthly deposits or maintain a linked checking account. The catch is that these terms are not always visible on the main product page—you often have to read the account agreement or call to find out.

The reason minimums exist at all is that banks use them to filter customers. A $10,000 minimum keeps out people who might maintain tiny balances and cost the bank money to service. But high yield savings accounts, which live online and have low overhead, rarely need this filter. They can afford to take your $1.

Key Takeaways

  • Most online high yield savings accounts have no minimum balance requirement and will let you open with any amount, including $1.
  • Some banks do impose minimums ranging from $500 to $25,000, so you need to check the account agreement before opening.
  • A few banks waive the minimum if you set up automatic deposits or keep a linked checking account with them.
  • Falling below a minimum (if one exists) typically triggers a monthly fee rather than closing your account, though terms vary by bank.

How to learn about a specific bank has a minimum

The account agreement is the only document that will tell you for certain. Most banks publish this as a PDF on their website, usually labeled "Account Terms and Conditions" or "Deposit Account Agreement." Search for the words "minimum balance" or "minimum opening deposit" on that page.

If the agreement does not mention a minimum, the bank has none. If it does, the document will specify the amount, when it applies (opening, ongoing, or both), and what happens if you fall below it. Some banks charge a monthly fee—typically $5 to $10. Others may close the account or move you to a non-interest-bearing savings product.

Calling the bank's customer service line is faster if you are comparing accounts. Ask directly: "Does this account have a minimum balance requirement?" and "What happens if I go below it?" Write down the answer. Customer service representatives can also tell you about waivers—whether you can avoid the minimum by setting up direct deposit or maintaining a linked account.

Banks that commonly have minimums versus those that don't

Online-only banks like Marcus, Ally, and American Express have zero minimums because their low overhead means they can afford to take small accounts. Traditional banks with online savings products often impose $500 to $2,500 minimums, though many will waive these if you maintain a checking account with them. Credit unions vary widely—some have no minimum, while others require $25 to $500. Brokerage firms offering cash management accounts typically range from $0 to $1,000 depending on the firm and product.

The pattern is clear: the more a bank relies on physical branches and traditional customer relationships, the more likely it is to impose a minimum. Online-only institutions, which have no branches to maintain and compete primarily on rate and terms, almost never do. If you are shopping for a high yield account and want to avoid any minimum, stick with banks that operate entirely online.

What happens if you fall below the minimum

If your account has a minimum and you drop below it, the bank will not when ready close your account or seize your money. Instead, a monthly maintenance fee kicks in—usually $5 to $15. This fee is deducted from your balance each month you stay below the minimum, which means your balance shrinks further and the fee compounds the problem.

Over time, a $10 monthly fee on a $200 balance is devastating to your interest earnings. You earn almost nothing, and the fee eats what little you do earn. This is why knowing the minimum upfront matters: if you cannot comfortably stay above it, an account with no minimum is a better choice.

Some banks will eventually close an account if the balance reaches zero or stays dormant for a long period, but this is separate from the minimum balance rule. Read the account agreement for the bank's dormancy policy if you plan to leave the account untouched for months.

Minimums versus interest rate tiers

Do not confuse a minimum balance requirement with an interest rate tier. A tier means the bank pays you a higher interest rate if you maintain a larger balance. For example, a bank might pay 4.00% on balances under $10,000 and 4.25% on balances of $10,000 or more. You are not penalized for staying below the threshold—you just earn less interest.

A minimum balance requirement, by contrast, triggers a fee if you fall below it. The two are different mechanisms, and a bank can have one, both, or neither. When you are comparing accounts, look for both: the minimum balance (which costs you money if you miss it) and any rate tiers (which reward you for keeping more in the account).

Why minimums matter less at high yield savings accounts than at checking accounts

Checking accounts often have minimums because banks expect you to use them actively—deposits, withdrawals, bill payments. A checking account with a $1,500 minimum is common. High yield savings accounts, by contrast, are meant to sit and earn interest. You are not supposed to move money in and out constantly. Because of this, banks have less reason to impose minimums.

The other difference is that high yield savings accounts are already a niche product. People who open them are usually comparing rates and shopping for the best deal. A bank that imposes a $5,000 minimum on a high yield savings account will lose customers to competitors with no minimum. Online banks, which have no physical branches to maintain, can afford to be more competitive on this front.

What to do if you want a high yield account but cannot meet a minimum

Open an account at a bank with no minimum. This is the straightforward answer. Marcus, Ally, American Express Personal Savings, Wealthfront Cash Account, and many others have zero minimums and competitive interest rates. You lose nothing by choosing one of these over a bank that imposes a minimum you cannot meet.

If you are loyal to a specific bank and it does have a minimum, ask whether it can be waived. Some banks will waive a $1,000 minimum if you set up a monthly automatic transfer from your checking account, even if the transfer is just $25. Others waive it if you maintain a linked checking account with them. These waivers are not always advertised, so it is worth asking.

Frequently Asked Questions

Can a bank close my account if I fall below the minimum balance?

A bank can close your account, but it usually does not happen when ready. First, a monthly fee applies. If your balance stays at zero or near zero for several months, the bank may close the account and send you the remaining balance by check. Read your account agreement for the specific dormancy policy.

If I open an account with $1, will the bank let me keep it open?

Yes, at banks with no minimum balance requirement. You can open the account, deposit $1, and leave it there earning interest indefinitely. The bank will not close it or charge you a fee as long as you maintain at least $0.01 in the account.

Do I have to meet the minimum balance every single day, or just on certain days?

This depends on the bank's policy. Some banks check your balance daily and charge a fee for any day you fall below the minimum. Others check only on the last day of the month or on statement closing date. The account agreement will specify the timing. Call the bank if the agreement is unclear.

What if I have a high yield savings account with no minimum but the bank later adds one?

Banks can change account terms, but they must notify you in advance—usually 30 days. If a bank adds a minimum to your existing account, you have the right to close it without penalty during the notice period. You can also contact the bank and ask whether the new minimum applies to existing accounts or only to new ones opened after the change.

Does a high yield savings account minimum affect my credit score?

No. Minimum balance requirements on savings accounts do not appear on your credit report and do not affect your credit score. Only credit products—credit cards, loans, lines of credit—show up on your credit report. A savings account is a deposit account, not a credit account.