On a bank statement, “CD” almost always stands for one of two things: a Certificate of Deposit transaction or a Cash Deposit. Which meaning applies depends on the account involved and the direction the money moved. The dollar amount, the date, the location, and any linked account number in the entry will usually make it clear which one you’re looking at.
CD as a Certificate of Deposit
A certificate of deposit is a savings product that locks up a fixed sum for a set term, from a few months to five years or longer, at a guaranteed interest rate. When “CD” appears next to a debit, it typically means money moved out of your checking or savings and into a new certificate. When it appears next to a credit, it usually reflects an interest payment posted from an existing CD, or the return of your balance after the CD matured.
Federal rules under Regulation DD require the bank to disclose the annual percentage yield, the interest rate, and the early withdrawal penalty terms before you open a CD.1Consumer Financial Protection Bureau. 12 CFR Part 1030 – Truth in Savings (Regulation DD) Early withdrawal penalties commonly range from around 60 days’ interest on short-term CDs to a full year of interest on longer terms. That matters when you’re reading a statement, because a “CD” debit signals funds that are no longer freely available.
CD as a Cash Deposit
The other common use of “CD” records a cash deposit, meaning physical currency you handed to a teller at a branch. Banks use the code to separate teller cash from electronic transfers (often labeled “ACH”), check deposits, and ATM transactions. If the entry shows a branch name or teller reference and the amount looks like currency someone would hand over in person, it’s almost certainly a cash deposit rather than a certificate.
Cash gets its own code partly because currency draws extra regulatory attention. Under the Bank Secrecy Act, banks must file a Currency Transaction Report for any cash transaction over $10,000 in a single day.2eCFR. 31 CFR 1010.311 – Filing Obligations The bank handles that filing on its own.
How to Tell Which One Your Entry Is
Context inside the transaction line usually settles it. A “CD” debit for a round figure like $5,000 or $10,000, tied to a different account number at the same bank, is almost always the funding of a certificate of deposit. A “CD” credit for an uneven amount like $47.83, paired with a branch location, is almost always a teller cash deposit. A small “CD” credit that recurs monthly or quarterly on a savings-style account is likely interest posting from an existing certificate.
If the entry still isn’t clear, look for a code legend. Paper statements sometimes print a glossary on the back page, and PDF statements may include one at the end. Online banking often lets you click an individual transaction for a fuller description that names the branch, the teller, or the linked CD account.
When none of that resolves it, call the number on the back of your card or send a secure message through the bank’s app. A representative can pull the internal record and tell you exactly what the entry represents. It’s worth doing whenever a “CD” line doesn’t match something you remember doing, because federal error-resolution rights run on a clock.
If a CD Entry Looks Wrong
If a “CD” entry is incorrect, whether the amount is off, the transaction wasn’t yours, or a deposit you made never posted, federal law gives you 60 days from the date the bank sent the statement to report the problem.3Consumer Financial Protection Bureau. 12 CFR 1005.11 – Procedures for Resolving Errors Once you notify the bank, it has 10 business days to investigate and either correct the error or provisionally credit your account while it keeps looking.4eCFR. 12 CFR 1005.11 – Procedures for Resolving Errors
Missing that 60-day window doesn’t automatically end your ability to dispute, but it weakens your position. The bank is no longer required to credit you provisionally, and you can be held responsible for unauthorized transfers that occur after the deadline. A quick scan of each statement for codes and amounts you don’t recognize is enough to keep the clock on your side.
A Note on CD Interest and Taxes
If your “CD” entry turns out to be an interest credit from a certificate, that interest is taxable in the year it becomes available to you, even if you don’t withdraw it.5Internal Revenue Service. Topic No. 403, Interest Received On a multi-year CD that posts interest annually, you owe tax on each year’s posting as it happens, not just at maturity. The bank will send a Form 1099-INT for any account that earns $10 or more in interest during the year.6Internal Revenue Service. 2026 General Instructions for Certain Information Returns Interest below that threshold is still reportable, so keep a note of any “CD” interest credits you see when you’re going through the statement.