A certificate of deposit, or CD, is a savings account offered by banks and credit unions. You agree to leave the money alone for a set term. In return, the account earns a stated interest rate. The Consumer Financial Protection Bureau describes it this way, and it adds that pulling money out early means paying a penalty to the bank.

That is the whole bargain. You give up access. The bank gives you a rate. If you wait until the maturity date, you can take your money out without the early withdrawal charge.

A wide desk scene with a calendar and a deposit schedule grid, a pen, a brass clock, and stacked coins in soft morning light, suggesting planning for certificate of deposit maturity dates.
A calendar and deposit schedule on a desk, with a clock and coins, show how term lengths and maturity dates shape a CD.

The penalty applies only to withdrawals made before the term ends. Money taken out after maturity is not charged that penalty. The rest of this piece covers how the account works, what leaving early can cost, who insures the money, and how to pick a term.

How a certificate of deposit works

When you shop for a CD, you pick a term. That choice sets your maturity date. The CD earns the stated interest rate, and you agree not to withdraw before that date without paying a penalty.

Terms vary, so you can match one to your own plans. The CFPB gives a plain example. If you expect to spend the savings in five years, a five-year CD points the right way. The money stays put until about the time you need it.

Your account agreement is the contract. It spells out the term, the rate and the penalty. Federal rules under Regulation DD, the Truth in Savings regulation at 12 CFR 1030.4, cover account disclosures. The section text available for this article was cut off, so it does not say exactly what must be disclosed. Read the paperwork you are given before you sign.

What early withdrawal costs

Taking money out of a CD early is not free. HelpWithMyBank.gov, a site run by the Office of the Comptroller of the Currency, says whether a penalty applies and how large it is depends on the terms of your account.

Federal law sets a minimum but no maximum. According to that same guidance, if you withdraw within the first six days after the deposit, the penalty is at least seven days of simple interest. Past that early window, the guidance describes no federal cap on what a bank may charge.

So each institution writes its own formula. Some may charge a set number of months of interest. Others may use something different. The sources do not say whether a penalty can exceed the interest you have earned or reduce your original deposit. Ask before you open the account.

Here is a hypothetical, not a real bank's rule. Say an agreement charges three months of interest, and your CD pays $40 of interest a month. Leaving early would cost $120. If you had earned only two months of interest, the leftover $40 could come out of principal, depending on the contract. That is exactly the question to put to the bank.

Deposit insurance and who issues the CD

Bank CDs are insured up to $250,000 by the FDIC. Credit union CDs are insured up to $250,000 by the NCUA. So the first thing to check is whether the issuer is a bank or a credit union.

  • Bank CDs: FDIC insurance, up to $250,000.
  • Credit union CDs: NCUA insurance, up to $250,000.

The sources give only that limit. They do not explain how joint accounts, multiple accounts or other ownership types are treated. If you hold a large balance at one institution, confirm your coverage with the bank or credit union directly.

Comparing CDs and choosing a term

Start with the date you expect to need the money. Matching the maturity date to that need is the simplest way to avoid a penalty. A planned purchase in five years suggests a five-year term.

When you compare offers, the CFPB suggests looking at three things together:

  1. The term: how long you agree to leave the money in.
  2. The interest rate: what you earn over that time.
  3. The early withdrawal penalty: what you pay if you leave before the term ends.

A high rate can lose its shine if the penalty is steep and your timeline is shaky. Put these questions to the bank. What is the penalty, and how is it calculated? Does the term match when I will need the cash? How does the penalty compare with other offers? Is the issuer FDIC or NCUA insured?

Before and at maturity

Keep the maturity date on your calendar. The sources do not explain what happens if a CD matures and you do not redeem it, though HelpWithMyBank.gov lists it as a related question. Your account agreement is the place to look. Ask whether the CD renews on its own and how much notice you have.

The sources also do not cover how interest is compounded or how CD interest is taxed. For those, check your disclosure documents and consider a tax professional.

Please seek a professional. This article is general information, not financial, tax or insurance advice. Please seek a licensed financial, tax or insurance professional about your own situation.