Free savings planning tool

CD Ladder Calculator

Build your CD ladder: enter your total amount, rungs, terms, and APYs to see each rung's maturity value and date, your full maturity schedule, and total interest.

Build your ladder

Maturity dates are counted from January of this year. Use today's year for a new ladder.

Rates below are illustrative only, based on competitive online-bank CD rates seen in September 2026 (top 1-year CDs around 4.30 to 4.44% APY; longer terms generally 3.40 to 4.35%). Enter your bank's actual rates for a real plan.

Your CD ladder

RungDepositTermAPYMaturity valueInterestMatures

Maturity schedule

Maturity value uses A = P(1 + r/n)^(nt): principal times one plus the rate over compounding periods, raised to periods times years. Average effective yield is weighted by principal and term. Reinvestment note: when a rung matures, you can roll it into a new longest-term CD to keep the ladder going, or cash it out if your plans changed. Set maturity instructions with your bank so a CD does not auto-renew into a lower rate.

How a CD ladder works

A CD ladder splits your savings across several certificates of deposit with staggered maturities. A classic 5-year ladder puts equal amounts into 1, 2, 3, 4, and 5-year CDs. Every year one rung matures, giving you regular access to cash, and you can reinvest it into a new 5-year CD at the longest term. After the first cycle, every dollar earns the 5-year rate while you always have money maturing within 12 months.

Ladders solve the two classic CD problems. A single long CD locks up all your money. A single short CD leaves you reinvesting constantly at whatever rates happen to be available. The ladder gives you the higher yields of longer terms with the regular liquidity of shorter ones, and every rung is FDIC insured up to $250,000 per depositor, per insured bank, per ownership category.

Frequently asked questions

How many rungs should my CD ladder have?

Five rungs with annual maturities is the classic setup and works well for most savers. Use fewer rungs (3) if you want simplicity or expect to need the money sooner. Use more rungs (8 to 10) if you want very frequent maturities, though the extra complexity rarely pays much. Match the longest rung to when you might actually need the money.

What happens when a rung matures?

You choose in advance: reinvest the full amount into a new CD at the longest rung to keep the ladder rolling, cash out to savings if your plans changed, or roll into the same term. Most banks let you set automatic maturity instructions. Do this deliberately, because a CD left on autopilot often renews into the bank's standard rate, which can be much lower than competitive offers.

What is the early withdrawal penalty on a CD?

Bank-issued CDs charge a penalty for withdrawing before maturity, typically 3 to 12 months of interest depending on the original term. That is why the ladder matters: with rungs maturing regularly, you rarely need to break a CD early. Brokered CDs bought through a brokerage can instead be sold on the secondary market, where the price may be higher or lower than face value.

Are CDs FDIC insured?

Yes. CDs at FDIC-insured banks are covered up to $250,000 per depositor, per insured bank, per ownership category, the same as savings accounts. If your ladder exceeds $250,000 at one bank, spread rungs across multiple banks or use brokered CDs from different issuers to stay fully covered.

Should I use bank CDs or brokered CDs?

Bank CDs are bought directly from the issuing bank and usually allow early withdrawal with a penalty. Brokered CDs are bought through a brokerage, often with slightly higher rates and no minimums, and can be sold before maturity at market price. Both carry FDIC insurance when issued by insured banks. Brokered CDs make it easy to spread large ladders across many banks for full coverage.

Is a CD ladder better than a high-yield savings account?

It depends on what you value. A ladder locks in fixed rates, protecting you if rates fall, while a high-yield savings account keeps rates variable but lets you withdraw anytime. As of late 2026, top high-yield savings rates overlap with many CD rates, so the ladder's edge is rate certainty, not raw yield. Many savers use both: savings for the emergency fund, a ladder for money with a 1 to 5 year horizon.

Guides

CD Ladder vs High-Yield Savings Account: Which Wins in 2026?

Rate certainty against flexibility, with real rate comparisons.

How to Build a CD Ladder in 2026, Step by Step

From first deposit to a self-maintaining ladder.

Related tools

Solo 401(k) vs SEP IRA Calculator

Compare self-employed retirement plans.

Pension Lump Sum Calculator

Compare a pension lump sum to monthly payments.

Coast FIRE Calculator

Find your Coast FIRE number.

Rate note: Default rates are illustrative, based on competitive online-bank CD rates observed in September 2026 reporting (top 1-year CDs 4.30 to 4.44% APY; EverBank 3.40 to 4.10% across terms; Marcus up to 4.35% on longer terms). Rates change frequently. Always enter your bank's actual current rates. This tool is for educational planning only and is not financial advice.

Get new free tools by email

One short email when a useful new calculator or dataset launches. No spam, unsubscribe anytime.

Subscribe free