How to build a CD ladder

Why ladder instead of one CD

A CD pays a fixed rate for a fixed term, and taking money out early usually costs a penalty. Longer terms usually pay more, which pulls you toward locking everything up for five years; needing cash, or wanting to catch higher rates later, pulls the other way. A ladder splits the difference:

• Liquidity: a fifth of the money comes due every year, so you can spend it without a penalty or keep it rolling.
• Long-term rates: once the ladder is built, every rung is a 5-year CD, so you earn 5-year rates while still getting money back yearly.
• Less timing risk: you never lock in all your money at one moment. If rates rise, you reinvest a rung at the higher rate within a year; if they fall, four-fifths stays locked at the old rates.

A ladder is for money you will not need all at once, like the part of an emergency fund beyond a few months of expenses, or savings for goals one to five years away. Keep everyday cash in a savings account.

Today's rates by term

Whether a ladder pays depends on the shape of the rate curve: how much more longer terms pay than shorter ones.

FDIC national averages (deposit-weighted rates paid by insured banks and credit unions) and the Treasury yields the FDIC lists for similar maturities, as of Oct 19, 2026. Treasury does not publish a 4-year yield, so the FDIC shows the 3-year yield for 48 months.

Plainly put: at national averages, short CDs pay more than long ones right now. The best-paying average term is 1 year at 1.76%, while 5 years pays 1.41%. Banks price this way when they expect rates to fall. Treasury yields, by contrast, rise with the term. The averages include large banks that pay very little, so the rates you can get, especially from online banks and credit unions, are often far higher. Shop each rung.

Worked example: $25,000 in five rungs

Put $5,000 each in a 1-, 2-, 3-, 4- and 5-year CD at today's national averages. One rung comes due at the end of every year:

Value at maturity grows at each CD's APY. Rates are the FDIC national averages; plug in your bank's rates in the calculator.

The blended starting rate is 1.48%, the average of the five. Here is how that ladder compares with other ways to hold the same $25,000 for five years, if today's rates hold:

Ladders reinvest each maturity in a new 5-year term at today's 5-year rate. After tax assumes a 22% federal bracket and a 5% state income tax; Treasury interest is exempt from state tax. Treasury yields are treated like APYs, a close approximation.

The ladder earns $1,343 more than the average savings account and $9 more than one 5-year CD, while freeing $5,000 a year. With today's curve, renewing a 1-year CD earns more still ($2,279), but only if 1-year rates stay where they are for five years. If they fall, the ladder's locked-in rungs keep paying; that protection is what you give up by staying short. A Treasury ladder at today's Treasury yields would earn $6,802, a reminder of how far the national averages sit below market rates.

The rolling phase

Each year, the rung that comes due goes into a new 5-year CD. After the first five years, every rung is a 5-year CD and one matures every year, so the ladder earns the 5-year rate (1.41% at today's average) with yearly access. In the example, the first rung pays $5,088.00 at the end of year 1, is rolled into a 5-year CD, and comes back as $5,456.96 at the end of year 6.

At each maturity you choose: roll the rung, spend it, or move it to savings. Most banks renew a maturing CD automatically into the same term after a short grace period, often 7 to 10 days, so note the dates and tell the bank what you want before the grace period ends. To end a ladder, stop rolling and let one rung a year come due.

Mini-ladders for flat or inverted curves

When short and long terms pay about the same, or short terms pay more, a ladder of shorter CDs gives you access sooner without giving up much. The calculator's mini-ladder splits money among 3 months (1.14%), 6 months (1.39%), 1 year (1.76%), with money coming due every 3 months and each maturity rolled into a 12-month CD. At today's averages it starts at a blended 1.43%, and $25,000 grows to about $25,412 in a year.

The trade-off is reinvestment risk: short CDs reprice quickly, so if rates fall, every rung renews at the lower rate within a year. A 1-to-5-year ladder locks in today's rates on most of the money. If you think rates will fall, longer rungs protect you; if you think they will rise, short rungs let you catch the increase.

Early withdrawal penalties and the break-even rate

Banks set their own penalties and must disclose them before you open the account. A common formula is a number of months of interest: often about 3 months for terms of a year or less and 6 to 12 months or more for multi-year CDs. A penalty larger than the interest earned so far can cut into your deposit; with a 12-month penalty on a 5-year rung at 1.41%, that is true for the first 11 months.

When rates rise, breaking a CD to reinvest at the new rate only pays if the new rate beats the break-even. For one $5,000 five-year rung at 1.41%:

Penalty figured as months of simple interest on the deposit at the CD rate. The break-even is the APY a new CD must pay for the rest of the original term to end with as much as keeping the CD.

The later you break, the higher the bar, because a penalty of the same size has fewer months to be earned back. The CD tab of the savings calculator works out the break-even for your own CD and penalty. The penalty is deductible: it is reported on your Form 1099-INT and subtracted from income on Schedule 1, whether or not you itemize.

Insurance, taxes and alternatives

Insurance: CDs at FDIC-insured banks are covered up to $250,000 per depositor, per insured bank, for each account ownership category (single, joint, certain retirement accounts and others), and credit union certificates get the same coverage from the NCUA. Interest counts toward the limit, so if one bank would hold more than that in one category, spread the rungs across banks.

Taxes: CD interest is ordinary income, taxed at your regular federal and state rates in the year it is credited, even if it stays in the CD until maturity. On a CD longer than a year, you report a share of the interest each year. That is why the after-tax column above matters: at 22% federal and 5% state, a 1.42% ladder keeps 1.03%.

Treasury ladders: Treasury bills (4 to 52 weeks) and notes (2, 3, 5, 7 and 10 years) can be laddered the same way, through TreasuryDirect or a brokerage. Their interest is exempt from state and local income tax, which helps most in high-tax states. There is no 4-year note, so that rung is usually an older 5-year or 7-year note bought with about four years left. Notes sold before maturity fetch the market price, which can be less than you paid.

Brokered CDs: brokerages sell CDs from many banks, which makes it easy to spread a ladder across banks for insurance. They are FDIC insured if the broker titles them correctly, but you usually cannot redeem them early with a penalty; you sell them on the secondary market at whatever price buyers pay, and some are callable, meaning the bank can end them early when rates fall.

For how CDs compare with I bonds and high-yield savings, see I bonds vs high-yield savings vs CDs.