CD deposit limits depend on the bank, not the government

There is no federal cap on how much you can deposit into a certificate of deposit. The Federal Deposit Insurance Corporation (FDIC) insures up to $250,000 per depositor per bank, but that is a protection limit, not a deposit limit. You can put $500,000 or $5 million into a single CD if the bank accepts it — the FDIC simply insures only the first $250,000 of that amount.

Most banks set their own minimums and maximums. A typical minimum is $500 to $2,500 to open a CD, though some banks have no minimum at all. Maximum deposit amounts vary widely: some banks accept deposits of $100,000 or more, while others cap CDs at $50,000 or $250,000. A few banks that cater to high-net-worth customers accept multimillion-dollar CDs. You need to check the specific bank's terms before you open an account.

The deposit limit you face is really a question of what the bank will accept and what insurance protection you want. Those are two separate decisions.

Key Takeaways

  • The FDIC insures $250,000 per person per bank, but you can deposit more than that into a CD — the extra amount simply will not be insured.
  • Each bank sets its own minimum deposit (often $500 to $2,500) and maximum deposit (often $50,000 to $250,000, but varies).
  • If you want to keep more than $250,000 insured across multiple CDs, you can open accounts at different banks or use different ownership categories at the same bank.
  • The term length and interest rate of a CD do not change the deposit limit — only the bank's policy does.

How FDIC insurance works with CD deposits

The FDIC insures deposits up to $250,000 per depositor per bank per ownership category. If you deposit $300,000 into a single CD at one bank, the FDIC covers $250,000 and leaves $50,000 uninsured. That uninsured money is at risk if the bank fails.

The ownership category matters. A CD in your name alone is one category. A CD in joint names (you and a spouse, for example) is a separate category, also insured up to $250,000. A CD held in trust for a beneficiary is another category. So a married couple can each have $250,000 in their own names at the same bank, plus another $250,000 in a joint account, for a total of $750,000 in FDIC coverage at that one bank.

If you want to keep more than $250,000 fully insured, you have two main routes: open CDs at different banks, or use different ownership structures at the same bank. Many people do both.

Minimum deposits and why they vary

Banks use minimum deposits to manage costs. A $500 minimum CD costs the bank less to administer than a $50 CD, so they set a floor. Online banks often have lower minimums than brick-and-mortar banks because their overhead is smaller. Credit unions sometimes have no minimum at all, though you must be a member to open an account.

The minimum does not change based on the CD term. A 3-month CD and a 5-year CD at the same bank usually have the same minimum deposit requirement. What does change is the interest rate — longer terms typically pay more, but that is separate from how much you must deposit to open the account.

If you have a small amount to save, look for banks or credit unions with no minimum or a minimum under $500. Online banks like Marcus, Ally, and American Express often have minimums of $500 or less. Some credit unions have no minimum at all.

Maximum deposits and when they matter

Maximum deposit limits become relevant if you are saving a large sum. A bank that caps CDs at $50,000 will not let you open a single CD for $100,000, even if you want to. You would need to open two CDs at that bank, or split your money across multiple banks.

Banks that work with institutional investors or high-net-worth individuals often accept much larger deposits. Brokered CDs — CDs sold through investment firms rather than directly from a bank — can sometimes accommodate very large deposits, though they come with different terms and protections than bank CDs.

If you are depositing more than $250,000, check the bank's maximum before you commit. Some banks will tell you on the phone; others list it on their website or in the account agreement.

Splitting large deposits across multiple banks

If you have $500,000 to put into CDs and want full FDIC insurance, you can open $250,000 CDs at two different banks. Each bank insures your deposit up to $250,000 separately. You keep the same interest rate and term at each bank — you are just spreading the money to stay within the insurance limit.

This approach works well if you want to ladder CDs (open multiple CDs with different maturity dates so money becomes available at regular intervals) or if you want to compare rates across banks. Some people open CDs at five or six banks to diversify and maximize insurance coverage.

The downside is that you have more accounts to track and more interest to report on your tax return. But if safety and full insurance coverage matter more to you than convenience, splitting deposits is straightforward.

What happens if you exceed the FDIC limit

If you deposit $300,000 into a CD at a bank and the bank fails, the FDIC pays you $250,000. The remaining $50,000 is treated as a general unsecured claim against the bank's assets. You may recover some of it, but there is no may provide. In practice, bank failures are rare and most depositors recover their full amount even when uninsured, but the risk exists.

The uninsured portion does not earn interest differently or sit in a separate account — it is simply not covered by FDIC protection. You should assume it is at risk and plan accordingly.

If you are uncomfortable with any uninsured amount, keep all your CD money at or below $250,000 per bank, or spread it across multiple banks.

Frequently Asked Questions

Can I open multiple CDs at the same bank to deposit more than the minimum?

Yes. If a bank has a $2,500 minimum and you want to deposit $10,000, you can open four separate CDs of $2,500 each. Each CD is a separate account and can have a different term or interest rate. The bank's maximum deposit limit applies to each individual CD, not to your total across all CDs at that bank.

Do I lose FDIC insurance if I open CDs at the same bank in different names?

No. A CD in your name, a CD in your spouse's name, and a joint CD at the same bank are three separate ownership categories, each insured up to $250,000. You do not lose coverage by having multiple accounts at one bank as long as the ownership is different.

What if I want to deposit more than $250,000 but keep it all at one bank?

You can do it, but only the first $250,000 will be FDIC-insured. The amount over $250,000 is uninsured. Some people accept this risk if the bank is very stable or if they are using the CD as part of a larger strategy. If you want full coverage, you need to split the money across multiple banks or use different ownership categories.

Are there any tax consequences to opening CDs at multiple banks?

No tax penalty, but you will report interest from each CD on your tax return. If you have five CDs earning interest, you will receive five 1099-INT forms (one from each bank) instead of one. The total tax you owe is the same — it is just more paperwork to organize.

Can I change the amount in a CD after I open it?

No. A CD is a fixed contract. You deposit a set amount at the start, and that amount stays the same until maturity. You cannot add money to an existing CD or withdraw part of it without breaking the CD and paying an early withdrawal penalty. If you want to deposit more, you open a new CD.