The basic steps to open a CD
Opening a CD account takes between 10 and 30 minutes and requires three things: money to deposit, a valid ID, and a choice of bank or credit union. You pick your institution, decide how long to lock your money away (the term), and complete an application—either online, by phone, or in person. The bank then confirms your identity, moves your funds into the CD, and locks in your interest rate for the full term.
Most banks let you start with as little as $500 to $1,000, though some require $2,500 or more. Credit unions often have lower minimums. The entire process can happen in one sitting if you go online; in-person or phone applications may take a day or two for the bank to process and fund the account.
Key Takeaways
- You need a government-issued ID, proof of address (usually your current account statement or utility bill), and the opening deposit amount before you start.
- Online CD accounts typically open fastest—often within hours—while in-person and phone applications may take one to three business days to fund.
- The interest rate is locked in on the day you open the account, so compare rates across at least three banks or credit unions before committing.
- You must choose your term length (3 months to 5 years is most common) before opening; changing it early usually means paying an early withdrawal penalty.
- Some banks offer "no-penalty" CDs that let you withdraw early without a fee, though the rate is usually lower than a standard CD.
Gather your documents and information
Before you contact a bank, have these items ready: a government-issued photo ID (driver's license, passport, or state ID), proof of your current address (a recent utility bill, lease, or bank statement dated within the last 60 days), and your Social Security number. If you are opening an account for a business or trust, you will need an Employer Identification Number (EIN) instead.
You will also need to know how much money you want to deposit and which term length interests you. Most banks offer terms of 3 months, 6 months, 1 year, 2 years, 3 years, and 5 years. Longer terms usually pay higher rates, but your money is locked away longer. Write down the minimum deposit requirement for the bank you are considering—this varies widely and can range from $500 to $25,000.
Compare CD rates and terms across institutions
Interest rates on CDs change daily and vary by bank, credit union, and term length. A 1-year CD at one bank may pay 4.5 percent while another pays 4.75 percent—that difference adds up over time. Spend 15 to 20 minutes checking rates at three to five institutions before you open an account, because you cannot move the money without penalty once the CD is funded.
Use the bank's website to see rates, or call their customer service line. Write down the annual percentage yield (APY), the term, the minimum deposit, and any special conditions (such as whether the rate is promotional or limited-time). Credit unions sometimes offer higher rates to members, so check your employer's credit union or any union you belong to. Online banks typically offer higher rates than brick-and-mortar banks because they have lower overhead costs.
Choose your opening method: online, phone, or in person
Online is fastest. You can open most CDs through a bank's website in 10 to 15 minutes, upload your ID and proof of address as image files, and fund the account by linking an external bank account or transferring money from an existing account at that bank. The CD usually opens within hours, and your interest rate locks in immediately.
Phone applications take longer because a representative must verify your identity by asking security questions. This method works well if you have questions about the terms or want to confirm the rate before committing. In-person applications at a branch office let you hand over documents and ask questions face-to-face, but they require a trip and may take one to three business days to process.
If you are opening a CD with a new bank where you have no existing account, you will need to fund it by transferring money from another bank account (which takes one to three business days) or by mailing a check. Some banks let you fund online immediately if you link an external account; others require the transfer to clear before the CD officially opens.
Complete the application and verify your identity
The application itself is straightforward: you enter your name, address, phone number, email, and Social Security number. You will be asked to confirm the deposit amount and the term length you want. The bank will then run a soft credit check (which does not affect your credit score) and verify your identity using the documents you provided.
If you are opening online, upload clear photos of both sides of your ID and your proof of address. Make sure the images are in focus and all four corners of each document are visible. If you are opening by phone, the representative will ask you to confirm information from your ID and may ask security questions like your mother's maiden name or the last four digits of your Social Security number. In person, simply show your documents to the teller.
Fund your CD and confirm the details
Once your identity is verified, you will transfer or deposit your opening amount. If you are linking an external bank account online, the transfer usually takes one to three business days to clear. Some banks let the CD open immediately at the locked-in rate, even if the money is still in transit; others wait until the funds arrive. Ask the bank which applies to you.
After the money is deposited, the bank will send you a confirmation email or statement showing the CD's opening date, term end date, interest rate, APY, and maturity amount (what you will have when the term ends). Save this document. On the maturity date, the bank will either automatically renew the CD at the current rate or move the money to a linked savings account—check your account settings to see which option is set and change it if needed.
Understand what happens when your CD matures
When your term ends, you have a short window (usually 7 to 10 days) to decide what to do with the money. You can withdraw it without penalty, move it to a savings account, or let it automatically renew into a new CD at the bank's current rate. If you do nothing, most banks will renew automatically—but the new rate may be lower than what you locked in originally.
Log into your account a few weeks before maturity to see what the renewal rate will be. If it is lower than rates elsewhere, you can withdraw the full amount (principal plus interest) and move it to a higher-paying CD at another bank. There is no penalty for withdrawing at maturity, only if you withdraw early.
Frequently Asked Questions
What happens if I need the money before the CD matures?
You can withdraw it, but the bank will charge an early withdrawal penalty—usually three to six months of interest. For example, if your CD pays $100 in interest and the penalty is three months of interest, you lose $25. Some banks offer "no-penalty" CDs with lower rates but no early withdrawal fee. Check your CD's terms before opening to know the exact penalty.
Can I open a CD with money from another bank?
Yes. Link your external bank account during the online application, or provide your account number and routing number by phone. The transfer takes one to three business days. Some banks let the CD open at the locked-in rate while the money is in transit; others wait until it clears. Confirm with the bank before you apply.
Do I need an existing account at the bank to open a CD?
No, but it makes funding faster. If you have no account there, you will need to link an external account or mail a check. Online banks especially do not require an existing relationship. Opening an account and a CD at the same time is common and takes the same amount of time as opening just the CD.
What if the interest rate drops after I open my CD?
Your rate is locked in and will not change, even if the bank lowers rates the next day. This is one of the main benefits of a CD—you know exactly what you will earn. If rates rise, your rate stays the same, which is the trade-off for the security of a fixed return.
Can I add money to my CD after I open it?
Most banks do not allow deposits into an existing CD. You would need to open a separate CD for the additional money. Some banks offer "add-on" CDs that let you deposit more during the term, but these are less common. Ask the bank about this option if you think you might want to add funds later.