CD (Certificate of Deposit)
Also known as: Term deposit, Time deposit
A federally insured deposit product at a US bank or credit union where you commit funds for a fixed term — typically 3 months to 5 years — in exchange for a fixed APY. Early withdrawal triggers a penalty, usually 90 days to 12 months of interest depending on the term.
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Certificates of deposit are the simplest form of fixed-income product available to retail US savers. You deposit a fixed amount, the bank agrees to a fixed APY for a fixed term, and at maturity you receive the principal plus accrued interest. CDs are FDIC-insured at banks and NCUA-insured at credit unions on the same per-depositor terms as savings accounts ($250,000 per depositor per insured institution per ownership category). The federal insurance and the fixed rate are the two structural features that distinguish CDs from money market accounts (variable rate) and high-yield savings accounts (variable rate, fully liquid).
Typical 2026 US CD terms range from 3 months to 5 years, with the highest APYs usually offered on terms between 6 and 18 months in normal rate environments. The yield curve inverts and steepens depending on Federal Reserve policy expectations; longer-dated CDs sometimes pay less than shorter-dated CDs (an inverted curve) and sometimes pay substantially more (a steep upward-sloping curve). The decision between term lengths depends on whether you expect rates to rise, fall, or stay flat over the holding period — which is essentially a bet on Fed policy. A reader who does not want to make that bet can structure a CD ladder, opening CDs at multiple maturities so one matures each month or quarter and can be reinvested at the then-prevailing rate.
The defining feature of a CD is the early withdrawal penalty. If you need the money before the CD matures, the bank charges a penalty — typically 90 days of interest on terms under 1 year, 180 days on terms of 1–2 years, and 12 months on terms of 3+ years. The penalty applies to interest only on most CDs but can deduct from principal if the CD has not accrued enough interest to cover the penalty. The early withdrawal penalty is the cost of fixed-rate certainty: in exchange for locking in a rate that the bank cannot reduce, you accept the inability to access the funds without penalty.
The break-even math between a CD and a HYSA is straightforward. If the CD yields 4.00% APY for 12 months and the HYSA yields 3.50% APY (variable), the CD pays 50 basis points more annually — about $100 on $20,000. The HYSA's advantage is full liquidity and the possibility of the rate rising further; the CD's advantage is rate certainty and slightly higher yield. Which one wins depends on (a) whether you actually need the liquidity and (b) what HYSA rates do over the CD's term. A reader holding emergency-fund cash should generally stay in a HYSA for the liquidity; a reader with a known cash need 12 months out (a tax payment, a planned home purchase, a wedding budget) is the canonical CD use case.
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- APY (Annual Percentage Yield) The actual annualized return on a deposit account, taking compounding into account. Distinguishes meaningfully from "interest rate" only on accounts with intra-year compounding — which is virtually all US deposit accounts.
- HYSA (High-Yield Savings Account) A federally insured savings account at an online or hybrid US bank that pays a competitive APY — typically 10–20× the rate of legacy branch banks. The most underused high-ROI personal finance lever for most US households.
- FDIC insurance The Federal Deposit Insurance Corporation insures US bank deposits up to $250,000 per depositor, per insured bank, per ownership category. The structural guarantee that makes savings, checking, money market, and CD accounts at insured banks effectively risk-free up to the limit.
- CD ladder A CD ladder is a savings strategy that staggers certificate-of-deposit maturity dates so that one CD matures at regular intervals, providing both the higher yield of longer-term CDs and the liquidity of short-term access to a portion of the funds.
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