What a CD trades
You give up access to your money for a fixed period; in exchange the bank pays a fixed, guaranteed rate. That certainty is the product. It is well suited to money with a known date attached — a house deposit in eighteen months, a tax bill next year — and poorly suited to money you might need without warning.
Laddering
Instead of one five-year CD, split the money across one, two, three, four and five-year terms. As each matures, reinvest at the then-current five-year rate. Within five years the whole ladder earns long-term rates while a portion matures every year. It removes most of the timing risk from a rate decision you cannot predict anyway.
Tax treatment
CD interest is taxed as ordinary income in the year it is credited, even on multi-year CDs where you receive nothing until maturity. In a high bracket that materially reduces the real return — and it is why Treasury bills, exempt from state and local tax, are often the better after-tax choice in high-tax states.
The alternatives worth comparing
- High-yield savings — usually a similar rate with no lock-up, but the rate can fall at any time.
- Treasury bills — comparable yields, exempt from state tax, and highly liquid on the secondary market.
- Money market funds — daily liquidity, rates that track short-term policy rates.
- No-penalty CDs — a slightly lower rate in exchange for the right to withdraw early.
Read the renewal terms
Most CDs roll over automatically at maturity, frequently into the institution's standard rate rather than a competitive promotional one. Diarise the maturity date. Automatic renewal at a poor rate is the most common way CD holders quietly lose money.