High yield savings accounts have no legal limit on how much you can deposit

There is no federal cap on the balance you can hold in a high yield savings account. You can deposit $100, $100,000, or $10 million if you have it — the bank will not stop you based on account size alone.

What does matter is FDIC insurance, which protects your money if the bank fails. FDIC insurance covers up to $250,000 per depositor, per bank, per account type. If you have $500,000 in one high yield savings account at one bank, the FDIC protects $250,000 of it. The other $250,000 is uninsured.

Some banks set their own internal limits — they might cap deposits at $1 million or $5 million per account. This is rare and usually only happens at smaller banks or during periods when they are not accepting new deposits. You can ask your bank directly whether they have a deposit limit before you open an account.

Key Takeaways

  • Federal law does not limit how much money you can keep in a high yield savings account, but FDIC insurance only covers $250,000 per account at each bank.
  • If you have more than $250,000 to save, you can open accounts at multiple banks to keep all your money insured.
  • Some individual banks set their own deposit limits, though this is uncommon and usually temporary.
  • The interest rate you earn does not change based on your account balance — a $10,000 deposit earns the same rate as a $1 million deposit at the same bank.

How FDIC insurance works with large balances

The $250,000 FDIC limit applies to each depositor at each bank. This means if you have $500,000, you can split it between two different banks and have all of it insured: $250,000 at Bank A and $250,000 at Bank B, both fully protected.

The limit resets if you move to a different bank. If you have $250,000 at Bank A and move it to Bank C, you now have $250,000 insured at Bank C. You do not carry forward any "used" insurance from Bank A.

Joint accounts have their own separate $250,000 limit. If you and your spouse have a joint high yield savings account with $500,000, the FDIC covers $250,000 of that joint account. If you each also have individual accounts at the same bank, each individual account gets its own $250,000 of coverage.

When banks set their own deposit limits

Most large banks that offer high yield savings accounts do not cap deposits. Banks like Marcus, Ally, and American Express Personal Savings accept balances of any size.

Smaller banks or credit unions sometimes set limits during periods when they are receiving more deposits than they can manage. A bank might temporarily cap new deposits at $500,000 per account if they are growing too quickly. These limits are usually temporary and change as the bank's situation changes.

If a bank you are interested in has a deposit limit, they will tell you upfront — usually on their website or when you contact them. You can call the bank's customer service line and ask directly: "Does your high yield savings account have a maximum deposit limit?"

How your balance affects the interest rate you earn

Your account balance does not change the annual percentage yield (APY) you earn. Whether you have $1,000 or $1 million in the account, you earn the same rate. A bank publishes one APY for its high yield savings account, and every customer gets that rate.

Some banks offer tiered rates on other products — for example, a money market account might pay 4.5% on balances under $100,000 and 5% on balances above that. High yield savings accounts almost never use tiered rates. The rate is the same across all balances.

Protecting money beyond the FDIC limit

If you have more than $250,000 to save, the safest approach is to spread it across multiple banks. Open a high yield savings account at Bank A with $250,000, Bank B with $250,000, and Bank C with the remainder. All of it stays insured.

You can also look into sweep accounts, which automatically move your money between multiple banks to keep everything insured. Some online banks partner with networks of banks to offer this service. The process is automatic — you deposit once, and the system divides your money across the network to stay within FDIC limits at each institution.

Another option is a money market account at a bank, which works similarly to a high yield savings account but may offer slightly different rates or features. Money market accounts also have FDIC insurance up to $250,000 per bank.

What happens if you exceed the FDIC limit

If you keep $500,000 in one high yield savings account at one bank and that bank fails, the FDIC will pay you $250,000. The other $250,000 is lost. This is rare — bank failures are uncommon in the United States — but it is the real risk of keeping uninsured deposits.

The FDIC does not charge you for insurance and does not require you to do anything to set up it. Insurance is automatic for all deposits at FDIC-insured banks. You do not need to sign up, pay a fee, or fill out paperwork.

Frequently Asked Questions

Can I have multiple high yield savings accounts at the same bank?

Yes, but FDIC insurance still caps at $250,000 total across all your accounts at that bank. If you have two accounts with $200,000 in each, only $250,000 is insured. To protect more money, you need accounts at different banks.

Do I lose interest if I keep a very large balance?

No. The APY does not change based on how much money you have in the account. A $10 million balance earns the same rate as a $10,000 balance at the same bank.

What if I need to withdraw more than $250,000?

You can withdraw any amount at any time — there is no limit on withdrawals. The $250,000 limit only affects FDIC insurance in case the bank fails, not your ability to access your own money.

Are high yield savings accounts at online banks as safe as banks with physical branches?

Yes, as long as the bank is FDIC-insured. Online banks like Marcus and Ally are FDIC-insured just like traditional banks. The FDIC insurance applies regardless of whether you can walk into a branch.

If I move money between banks, do I lose insurance coverage?

No. When you move $250,000 from Bank A to Bank B, it becomes insured at Bank B instead. There is no gap in coverage as long as both banks are FDIC-insured.