CD prices start at $500 to $2,500 at most banks, though some go lower

The amount you need to open a certificate of deposit varies by bank. Most require between $500 and $2,500 as a minimum deposit. Some banks, particularly online-only institutions, accept $100 or even $1. A few traditional banks require $10,000 or more for their highest-rate CDs. The bank sets this minimum, not the government, so it changes from one institution to the next.

What you pay is what you deposit—there is no separate fee to buy the CD itself. If you put in $1,000, you own a $1,000 CD. The bank pays you interest on top of that amount over the term you choose (usually three months to five years). You get your original deposit back plus the interest when the CD matures, unless you withdraw early, which typically costs you a penalty.

The interest rate the bank offers depends on how long you lock your money away and what the broader interest rate environment looks like. A three-month CD pays less than a five-year CD at the same bank. Rates also shift week to week as the Federal Reserve adjusts its benchmark rate. Shopping around matters: one bank might offer 4.5% on a one-year CD while another offers 3.8% for the same term.

Key Takeaways

  • Most banks require $500 to $2,500 to open a CD, though online banks sometimes accept $100 or less.
  • You pay only the deposit amount itself; there is no separate purchase fee or commission.
  • The interest rate you receive depends on the CD term length and the current rate environment, and rates vary significantly between banks.
  • Withdrawing money before the maturity date triggers an early withdrawal penalty, which reduces your total return.
  • Your deposit is insured up to $250,000 per bank by the FDIC, so the amount you deposit is protected even if the bank fails.

How the deposit amount affects your interest earnings

A larger deposit earns more interest in dollar terms, but the interest rate itself does not change based on how much you deposit. If a bank offers 4.5% on a one-year CD, you earn 4.5% whether you deposit $500 or $50,000. The difference is in the total dollars you receive: a $500 deposit earns about $22.50 in interest over one year, while a $5,000 deposit earns about $225.

Some banks offer tiered rates, meaning they pay higher percentages on larger deposits. A bank might pay 4.0% on deposits under $10,000 and 4.5% on deposits of $10,000 or more. These tiers are rare at online banks but more common at regional or community banks. Always ask whether the rate you see applies to your deposit size.

Minimum deposits across different bank types

Online banks typically have the lowest minimums because they have fewer physical branches and lower operating costs. Many accept $100 or $500 to open a CD. A few, like Ally Bank and Marcus, have no stated minimum or accept $1.

Traditional brick-and-mortar banks usually require $500 to $2,500. Large national banks like Chase, Bank of America, and Wells Fargo often sit in this range. Credit unions may have different rules; some require you to be a member first, and minimums vary widely.

High-yield CDs from specialty banks sometimes require higher minimums—$5,000 to $10,000—because they offer rates above what mainstream banks pay. These are still FDIC-insured, but the higher deposit requirement reflects the bank's business model.

What happens if you withdraw before maturity

Breaking a CD early means paying an early withdrawal penalty. The penalty amount is set by the bank and varies widely. Some banks charge three months of interest; others charge six months or a full year's worth. A few charge a flat dollar amount like $25 or $50.

The penalty comes out of your interest earnings first. If you earned $50 in interest and the penalty is $75, you lose the $50 plus an additional $25 from your original deposit. This is why early withdrawal is costly: you not only lose the interest you expected, you may also lose part of what you put in.

Some banks offer no-penalty CDs, which let you withdraw without a fee before maturity. These typically pay lower interest rates than standard CDs because the bank is taking on more risk. They are worth considering if you are uncertain whether you will need the money.

FDIC insurance protects your deposit amount

The Federal Deposit Insurance Corporation (FDIC) insures CD deposits up to $250,000 per depositor, per bank. This means if you deposit $10,000 in a CD and the bank fails, you get your $10,000 back. The interest you earned is also covered up to the $250,000 total.

The $250,000 limit applies per bank, not per CD. If you have two CDs at the same bank totaling $300,000, only $250,000 is insured. If you want to insure more than $250,000, you can split deposits across different banks or use different account ownership structures (like a joint account or a trust account), each of which has its own $250,000 coverage.

Credit union CDs are insured by the National Credit Union Administration (NCUA) under the same $250,000 limit. The protection is equivalent, just administered by a different agency.

How CD rates compare to savings accounts and money market accounts

CDs typically pay higher interest than regular savings accounts because you agree to lock your money away for a set period. A savings account might pay 4.0% annual interest, while a one-year CD at the same bank pays 4.5%. The longer the CD term, the higher the rate usually is.

Money market accounts fall between savings accounts and CDs. They often pay rates close to CDs but allow you to withdraw money without penalty, though usually with limits on how many withdrawals you can make per month. If you need flexibility, a money market account may cost you in lower interest compared to a CD, but you avoid the early withdrawal penalty.

Treasury bills (T-bills) and Treasury notes are government-backed alternatives to CDs. They are not bank products, so they are not FDIC-insured, but they are backed by the U.S. government. Rates on T-bills and notes fluctuate based on auction demand, and they are bought and sold in the secondary market, which adds complexity that most CD buyers want to avoid.

Shopping for the best CD rate and terms

CD rates change frequently, sometimes daily. A rate that is competitive today may be below average next week. Use a CD rate comparison tool or check multiple banks' websites to see current offers. Online banks almost always pay more than traditional banks because they have lower overhead.

Pay attention to the term length you choose. A six-month CD pays less than a one-year CD, which pays less than a five-year CD—this is normal. Longer terms lock in higher rates, but they also lock up your money longer. If interest rates are rising, a shorter-term CD lets you reinvest at a higher rate sooner. If rates are falling, a longer-term CD locks in today's higher rate.

Read the fine print on early withdrawal penalties before you open the CD. Some banks publish the penalty amount clearly; others bury it in the terms and conditions. Knowing the penalty helps you decide whether a no-penalty CD is worth the lower rate, or whether you are confident enough in your financial situation to take the standard CD and its higher rate.

Frequently Asked Questions

Can I open a CD with less than the bank's stated minimum?

No, the minimum deposit is a hard requirement. If a bank requires $500, you cannot open a CD with $250. However, you can shop for a bank with a lower minimum. Online banks and some credit unions accept $100 or less, so if the minimum is a barrier, switching banks solves it.

Do I have to pay taxes on CD interest?

Yes. CD interest is taxable income in the year you earn it, even if you do not withdraw the money. The bank sends you a 1099-INT form at tax time showing the interest you earned. This is one reason CDs in retirement accounts like IRAs are useful—the interest grows tax-deferred.

What if I need my money before the CD matures?

You can withdraw it, but you will pay an early withdrawal penalty set by the bank. The penalty typically ranges from three to twelve months of interest. Some banks offer no-penalty CDs that let you withdraw without a fee, though they pay lower rates. Calculate whether the penalty cost is worth breaking the CD early, or wait until maturity if possible.

Are CD rates may provide for the full term?

Yes. Once you open a CD, the interest rate is locked in for the entire term. If rates rise after you buy the CD, you still earn the rate you agreed to. If rates fall, you benefit from having locked in the higher rate. This is why longer-term CDs pay more—the bank is taking on the risk that rates will rise.

Can I add money to a CD after I open it?

Most banks do not allow you to add money to an existing CD. You would need to open a new CD with the additional funds. Some banks offer add-on CDs that let you deposit more during the term, but these are less common. Ask your bank about their policy before you open the CD.