Banking
CDs Explained: How Certificates of Deposit Work
Quick answer
A certificate of deposit (CD) is a savings account with a deal attached: you agree to leave your money untouched for a fixed term — 3 months, 1 year, 5 years — and the bank pays you a fixed interest rate, usually higher than a regular savings account. Withdraw early and you pay a penalty, typically several months of interest. Your deposits are FDIC-insured just like savings accounts.
Key takeaways
- A CD trades liquidity for certainty: fixed rate, fixed term, penalty for early withdrawal.
- Longer terms usually pay higher rates — but the money is locked up the whole time.
- Early withdrawal penalties are typically measured in months of interest, not a flat fee.
- CD laddering — splitting money across multiple terms — keeps some cash freeing up regularly.
The deal, in plain English
You deposit a lump sum — often $500 or $1,000 minimum, though many online banks now offer no-minimum CDs — choose a term, and the bank locks your rate for the full term. A 1-year CD at 4% pays 4% for exactly one year, regardless of what happens to savings rates meanwhile. When the term ends (maturity), you get your principal plus interest, and can withdraw, renew, or move it.
That rate lock cuts both ways: if savings rates rise while your money is locked, you're stuck at the lower rate until maturity. If rates fall, you're glad you locked in.
Terms and the early withdrawal penalty
Common terms run from 3 months to 5 years. As a rule of thumb, longer terms pay higher rates — the bank rewards you for the longer commitment. But the commitment is real: withdrawing before maturity triggers an early withdrawal penalty, usually stated as a number of months of interest (for example, 3 months' interest on a 1-year CD, 6 months' on longer terms). On longer CDs the penalty can eat into principal if you withdraw very early — check the disclosure before you commit.
CDs vs. high-yield savings
The trade-off is simple. A high-yield savings account keeps your money liquid — withdraw anytime, rate floats with the market. A CD locks the rate but locks the money too. If you might need the cash within the term, the savings account wins despite the lower rate. If the money is earmarked for a known future date — a house down payment in 18 months, say — a CD matching that timeline locks today's rate with no guesswork.
Laddering: the best of both
A CD ladder splits your money across multiple terms — say, equal parts in 1-, 2-, and 3-year CDs. Every year one rung matures, freeing cash you can spend or roll into a new 3-year CD at the then-current rate. You get higher long-term rates on most of the money while something is always maturing soon. It's the standard answer to 'what if rates move?' — you never have everything locked at the wrong moment.
At a glance
| Feature | How it usually works |
|---|---|
| Minimum deposit | $0–$1,000 depending on the bank |
| Terms | 3 months to 5 years |
| Rate | Fixed for the full term |
| Early withdrawal | Penalty of several months' interest |
| Insurance | FDIC-insured up to limits, like savings accounts |
CD basics at a glance (typical structures; rates vary by bank and term)
What this means for you
Use CDs for money with a known timeline and a penalty you can live with. Keep emergency money in a liquid high-yield savings account instead — the slightly higher CD rate isn't worth the risk of paying a penalty when life happens. And never put money you'll need next month into a 5-year CD.
FAQ
Are CDs FDIC-insured?
Yes — CDs from FDIC-member banks carry the same deposit insurance as savings and checking accounts, up to the legal limits per depositor per bank.
What happens when my CD matures?
You typically get a grace period (often around 10 days) to withdraw or move the money. Do nothing and most banks automatically renew it into a new CD of the same term at the current rate.
Can I lose money in a CD?
Your principal is FDIC-insured, so market losses aren't a risk. The only way to come out behind is withdrawing early: the penalty can consume some or all of the interest earned, and on longer CDs withdrawn very early, it can nick principal.
Sources
- FDIC — deposit insurance and account disclosures (fdic.gov)
- Consumer Financial Protection Bureau — savings account guides (consumerfinance.gov)
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