How to open a CD at a bank or credit union
You open a CD by walking into a bank or credit union branch, calling their customer service line, or visiting their website — then choosing a term length, depositing money, and waiting for the maturity date. The process takes minutes if you already have an account there, or a few days if you need to open one first. You will need a government ID, your Social Security number, and the cash or a transfer from another account.
Most banks and credit unions let you open a CD online without visiting in person. You log in to your account (or create one), select the CD product, enter how much you want to deposit and how long you want to lock it up, review the interest rate and terms, and confirm. The money moves from your checking or savings account into the CD immediately. Some institutions mail you a paper certificate, though many now issue only digital records.
If you are opening your first account at that institution, you will need to provide your name, address, date of birth, and Social Security number. The bank runs a background check through ChexSystems (a banking history database) and may ask where the money is coming from if you are depositing a large sum. This is standard anti-fraud procedure, not a sign of a problem.
Key Takeaways
- You can open a CD online, by phone, or in person at any bank or credit union that offers them, and the process usually takes minutes to a few days.
- You will need a government ID, your Social Security number, and the amount of money you want to deposit locked away for the term you choose.
- The interest rate is set when you open the CD and does not change, even if rates rise or fall during your term.
- If you withdraw money before the maturity date, you will pay an early withdrawal penalty, which is usually a few months of interest.
- CDs are insured up to $250,000 per depositor per institution by the FDIC (at banks) or NCUA (at credit unions), so your principal is protected.
Choosing between online banks, traditional banks, and credit unions
Online banks typically offer higher CD rates than brick-and-mortar banks because they have lower overhead costs. You cannot walk in and speak to someone in person, but you can open an account and manage it entirely through their website or app. Online banks are FDIC-insured just like traditional banks, so your money is equally protected.
Traditional banks (Chase, Bank of America, Wells Fargo, and regional banks) offer lower rates but may have branches near you and staff who can answer questions face-to-face. If you already have a checking account there, opening a CD takes one conversation with a teller or a few clicks online.
Credit unions are member-owned and often offer competitive rates, especially if you have been a member for a while. You must join the credit union first (usually by opening a savings account or meeting a membership requirement like working for a certain employer or living in a certain area). Credit unions are insured by the NCUA up to $250,000, the same as FDIC coverage.
Understanding CD terms and interest rates
A CD term is how long your money stays locked up — typically 3 months, 6 months, 1 year, 2 years, 3 years, or 5 years. The longer the term, the higher the interest rate usually is, because the bank gets to hold your money for longer. A 5-year CD will pay more than a 6-month CD at the same institution.
The interest rate is fixed when you open the CD and does not change. If you open a 2-year CD at 4.5%, you will earn 4.5% for the full 2 years, even if rates drop to 2% or rise to 6%. This is why timing matters: if rates are high, locking in a longer term protects you if they fall. If rates are low, a shorter term lets you reinvest at a higher rate sooner.
Interest compounds either daily, monthly, or quarterly depending on the CD. Daily compounding earns you slightly more than monthly or quarterly, but the difference is small on most deposits. When your CD matures, you receive your original deposit plus all the interest earned.
What happens when your CD matures
On the maturity date, your CD stops earning interest and the money becomes available. Most banks automatically renew your CD at the current rate for the same term unless you tell them otherwise. You have a window — usually 7 to 10 days — to withdraw the money, move it to a different account, or let it renew.
If you do nothing and the bank renews it automatically, you are locked in for another full term at whatever the new rate is. If rates have fallen, you may earn less. If rates have risen, you may earn more. To avoid automatic renewal, contact your bank before the maturity date and request a withdrawal or a different action.
Some banks notify you by mail or email before maturity; others do not. Mark your calendar or set a phone reminder so you do not miss the window and accidentally renew at an unfavorable rate.
Early withdrawal penalties and when they apply
If you need your money before the maturity date, you can withdraw it, but you will pay an early withdrawal penalty. The penalty is usually a set number of months of interest — for example, 3 months of interest on a 1-year CD or 6 months of interest on a 5-year CD. Some banks charge a flat dollar amount instead.
The penalty is deducted from your interest earnings first. If you have not earned enough interest to cover the penalty, the bank takes the difference from your principal. For example, if you withdraw after 2 months from a 1-year CD with a 3-month penalty, you lose 1 month of principal.
A few banks offer "no-penalty CDs" that let you withdraw without a penalty, but they pay lower interest rates to offset the risk. These are worth considering if you are not certain you can leave the money untouched for the full term.
Moving money into your CD from another account
When you open a CD, the money must come from somewhere. If you already have a checking or savings account at the same bank, you can transfer the funds directly during the opening process. If your money is at a different bank, you can request an external transfer, which usually takes 1 to 3 business days.
Some banks let you fund a CD by mailing a check or depositing cash at a branch. Online banks that have no physical branches typically accept transfers only from external accounts or from linked accounts you set up during the opening process.
You can also open multiple CDs at the same institution if you want to spread your money across different terms. For example, you might open a 1-year CD, a 2-year CD, and a 3-year CD with the same bank. This way, one matures each year, giving you regular access to some of your money without early withdrawal penalties.
FDIC and NCUA insurance protection
Your CD is insured up to $250,000 per depositor per institution by the FDIC (if it is at a bank) or the NCUA (if it is at a credit union). This means if the bank or credit union fails, the government guarantees you will get your money back, up to that limit.
The $250,000 limit applies to all your deposits at that institution combined — checking, savings, and CDs all count toward the same limit. If you have $150,000 in a CD and $100,000 in a savings account at the same bank, you are covered for the full $250,000. If you have $300,000 total, only $250,000 is insured.
If you want to insure more than $250,000, you can open CDs at different banks. Each institution has its own $250,000 limit. You can also open CDs in different ownership categories (individual, joint, retirement accounts) at the same bank, and each category has its own $250,000 limit, but this is more complex and worth discussing with the bank directly.
Frequently Asked Questions
Can I open a CD if I do not have a bank account yet?
Yes. You can open both a checking or savings account and a CD at the same time, either online or at a branch. You will need your ID and Social Security number. Some banks require you to open a regular account first, then open the CD separately, while others let you do both in one application.
What is the minimum amount I need to open a CD?
Minimum deposits vary by bank and by CD product. Some banks have no minimum; others require $500, $1,000, or $2,500. Online banks often have lower minimums than traditional banks. Check the specific CD product page to see what that bank requires.
Can I add more money to a CD after I open it?
Most CDs do not let you add money after opening. You deposit the full amount upfront and it stays locked until maturity. Some banks offer "add-on CDs" that let you deposit more during the term, but these are less common and may have different terms or rates.
What if I need the money before the CD matures but do not want to pay a penalty?
Your options are limited. You can pay the early withdrawal penalty and accept the loss of interest. You can look for a no-penalty CD next time, which pays less interest but lets you withdraw anytime. Or you can open shorter-term CDs (3 or 6 months) so your money matures more frequently without penalty.
Do I have to renew my CD when it matures?
No. When your CD matures, you can withdraw the money, move it to a different account, open a new CD at a different bank, or let it renew at your current bank. Contact your bank before the maturity date to tell them what you want to do, or your CD will renew automatically.