CD Minimums Start at $500 and Go Up From There
Most banks and credit unions require a minimum deposit to open a certificate of deposit, and that amount varies widely. You'll find CDs with minimums as low as $500 at some online banks, while others require $1,000, $2,500, $5,000, or even $10,000 to get your free guide. A few banks have no minimum at all, though these are less common.
The minimum you face depends on the bank itself, not on federal rules. Each institution sets its own floor. Online banks tend to have lower minimums than brick-and-mortar banks because their operating costs are smaller. Credit unions often have lower minimums too, especially if you're already a member.
If you don't have the full minimum, you have two real options: save until you do, or look for a bank with a lower threshold. Some banks also offer "no-minimum" CDs that pay a slightly lower rate in exchange for flexibility on the opening deposit.
Key Takeaways
- CD minimums typically range from $500 to $10,000, depending on the bank or credit union you choose.
- Online banks and credit unions usually have lower minimums than traditional banks.
- The rate you earn on a CD does not depend on how much you deposit—a $500 CD earns the same percentage as a $50,000 CD at the same institution.
- Some banks offer no-minimum CDs, though the interest rate is usually lower than their standard CDs.
- Once you open a CD, you cannot add money to it—you deposit the full amount upfront.
How the Minimum Affects Your Decision
The minimum deposit is a barrier to entry, but it's not the same as the interest rate you'll earn. A bank with a $1,000 minimum might pay 4.5% annual interest, while a bank with a $5,000 minimum might pay 4.75%. The extra deposit doesn't automatically earn you more—you're just meeting that bank's requirement to open the account.
This matters because it means you should shop around. If you have $2,000 to put in a CD, you can open an account at any bank with a $2,000 minimum or lower. You're not locked into the first bank you find. Compare the rates across banks that meet your deposit amount, not just the ones with the lowest minimums.
What Happens If You Don't Have the Minimum
If you're $200 short of a bank's minimum, waiting a few weeks to save that amount often makes sense—especially if the rate at that bank is significantly higher than competitors with lower minimums. But if you need to open a CD now and don't have the full amount, look for banks advertising $500 minimums or no-minimum options.
Online banks like Marcus, Ally, and American Express Personal Savings frequently advertise low or no minimums. Credit unions in your area may also have lower thresholds, particularly if you're a member or can join. Call ahead or check their website to confirm the current minimum before you visit or apply.
CD Terms and How They Affect Your Money
The minimum deposit is separate from the term length—how long your money stays locked in the CD. Common terms are 3 months, 6 months, 1 year, 2 years, 3 years, and 5 years. The term you choose does affect your interest rate: longer terms usually pay higher rates because the bank has your money for longer.
Your deposit amount stays the same throughout the term. You cannot add more money to an existing CD, and if you withdraw before the term ends, you'll pay an early withdrawal penalty. That penalty is usually a certain number of months' worth of interest. So if you open a 1-year CD with a 3-month penalty, withdrawing after 6 months costs you 3 months of interest.
This is why the minimum matters: make sure you can afford to lock that money away for the full term. If you might need it sooner, either choose a shorter term or keep the money in a high-yield savings account instead, where you can withdraw anytime without penalty.
Comparing Minimums Across Bank Types
| Bank Type | Typical Minimum | Why It Varies |
|---|---|---|
| Online Banks | $500–$1,000 | Lower overhead costs allow lower minimums and higher rates. |
| Traditional Banks | $1,000–$10,000 | Physical branches and staff increase operating costs. |
| Credit Unions | $500–$2,500 | Member-owned structure often allows lower minimums. |
| High-Yield Savings Accounts | $0–$1,000 | No term lock-in, so minimums are lower or nonexistent. |
When a Lower Minimum Isn't Worth It
A bank with a $500 minimum might advertise a rate of 4.0%, while a bank with a $5,000 minimum pays 4.75%. If you have $5,000, the higher rate usually wins out, even though you're depositing more. Over a 1-year term, the difference between 4.0% and 4.75% on $5,000 is about $37.50—real money.
But if you only have $1,000 and the $5,000-minimum bank pays 0.5% more, you can't access that rate anyway. In that case, open the CD at the bank with the lower minimum and the best rate you can actually use. You're not losing anything by not meeting a higher minimum you can't afford.
Frequently Asked Questions
Do I earn more interest if I deposit more money in a CD?
No. The interest rate is the same whether you deposit $500 or $50,000. A higher deposit earns more total dollars in interest, but the percentage rate stays the same. The bank sets one rate per CD term, and everyone who opens that CD earns that rate.
Can I add money to my CD after I open it?
No. CDs are fixed-term products. You deposit the full amount upfront, and that amount stays locked in until the term ends. If you want to add more money, you'd need to open a separate CD. Some banks offer "add-on CDs" that allow deposits during a window, but these are rare.
What if I withdraw my money before the CD matures?
You'll pay an early withdrawal penalty, which is typically a set number of months' interest. For example, a 3-month penalty on a 1-year CD paying 4.5% would cost you roughly $11.25 on a $1,000 deposit. Always check the penalty terms before you open a CD.
Are there CDs with no minimum deposit?
Yes, some banks offer no-minimum CDs, though the interest rate is usually lower than their standard CDs. Online banks and credit unions are more likely to have these options. Check the rate difference before choosing a no-minimum CD—sometimes a higher-rate CD at a different bank is worth saving for.
Do I need to have the minimum in my checking account before I open a CD?
No. You can transfer money from anywhere—another bank, a savings account, or even a paycheck deposit—to meet the CD minimum. The bank just needs to receive the full deposit amount before the CD opens.