CD Ladder Calculator

A CD ladder splits your money across several certificates of deposit with staggered maturity dates - say five CDs maturing one year apart. As each one matures you reinvest it at the top of the ladder, usually into the longest term. The result is a rolling structure where part of your money frees up on a regular schedule while the whole balance gradually earns the longer-term rate.

You divide your deposit into equal rungs and buy CDs of increasing length - 1, 2, 3, 4, and 5 years, for example. Twelve months later the 1-year CD matures; you reinvest it into a new 5-year CD, which becomes the new top rung. Every year after that, one CD matures and rolls to the top. Once the ladder is fully cycled, every dollar is in a 5-year CD, but one-fifth of your money matures each year.

A ladder is worth it when you want most of the higher long-term rate without locking up all your cash. Instead of choosing between a 1-year CD (liquid but lower yield) and a 5-year CD (higher yield but frozen for five years), the ladder gives you a blend now that climbs toward the top rate as it matures, with a maturity every year. If you might need all the money soon, a high-yield savings account is simpler; if you will not touch it for years, a single long CD may edge it out.

Enough to clear each bank’s minimum on every rung - often $500 or $1,000 per CD, so a 5-rung ladder might need $2,500 to $5,000. There is no upper limit, though remember FDIC insurance covers $250,000 per depositor per bank; a very large ladder should spread across banks. This calculator works at any size - it just divides your total into equal rungs.

You have a short grace period (often 7-10 days) to decide. To keep the ladder going, reinvest the maturing CD into a new top-term CD at the current rate. If you need the cash, take it - that is the whole point of the ladder, and no penalty applies at maturity. If you do nothing, most banks auto-renew into the same term, which may or may not be what you want, so set a reminder for each maturity date.

Falling rates actually favor locking in longer terms now, which is where a ladder helps: your longer rungs hold today’s higher rates while shorter rungs give you the option to react. The reverse - a rising-rate environment - is where short ladders or savings accounts shine, because you reinvest sooner at the new higher rates. Match your rung spacing to your rate outlook: shorter steps to stay nimble, longer steps to lock in.

A savings account is fully liquid and its rate floats - it can drop the week after you open it. A CD ladder locks each rung’s rate for its term and usually pays more, at the cost of only partial liquidity (one rung at a time). The honest rule of thumb: emergency money belongs in savings; money you will not need for a year or more, and want at a guaranteed rate, belongs in a ladder.

Use real quotes - shop the CD rates at banks and credit unions for each term and enter them above; this calculator does not assume a rate curve for you. In many markets the curve is fairly flat or even slightly inverted (shorter terms paying as much as longer ones), which changes the ladder math, so it pays to check. Online banks and credit unions frequently beat big brick-and-mortar banks by a wide margin.

They are popular in retirement because the staggered maturities can line up with income needs - a rung maturing each year becomes spendable cash without selling investments at a bad time. Pairing a CD ladder with other income sources gives a predictable, FDIC-insured floor. The trade-off is that CDs rarely outpace inflation by much, so a ladder is usually a stability tool, not a growth engine.

CD interest is taxed as ordinary income in the year it is credited, whether or not you withdraw it - your bank sends a 1099-INT. For multi-year CDs, interest is generally taxed annually as it accrues, not all at maturity. Holding CDs inside an IRA defers or removes that tax. State tax also applies, unlike Treasury interest, which is one reason some savers compare a ladder against T-bills.