Term deposits present a genuine dilemma. A five-year CD usually pays more than a six-month one, but committing cash for five years is exactly what most savers cannot do. Choosing the short term sacrifices yield; choosing the long term sacrifices access — and breaking it early forfeits several months of interest.
A ladder resolves this structurally rather than by prediction. Divide the money into equal portions with staggered maturities, and the portfolio produces a maturity at regular intervals while the majority continues earning longer-dated rates.
How the structure works
A classic five-year ladder splits $50,000 into five $10,000 rungs maturing at one, two, three, four and five years. When the one-year rung matures you either take the cash or reinvest it into a new five-year CD — because the remaining rungs have each moved a year closer. After the first cycle, one rung matures every year and every rung earns the five-year rate.
| Rung | Initial term | At maturity | Then |
|---|---|---|---|
| 1 | 1 year | Year 1 | Reinvest into a new 5-year |
| 2 | 2 years | Year 2 | Reinvest into a new 5-year |
| 3 | 3 years | Year 3 | Reinvest into a new 5-year |
| 4 | 4 years | Year 4 | Reinvest into a new 5-year |
| 5 | 5 years | Year 5 | Reinvest into a new 5-year |
Why it removes forecastingIf rates rise, each maturing rung reinvests higher. If rates fall, the majority of your money is still locked at older, better rates. You never have to be right about the direction — which is fortunate, because almost nobody is.
Design your ladder
Choosing rung count and spacing
More rungs mean more frequent access and a smoother average rate, but more accounts to administer. Fewer rungs mean less admin and a higher concentration in each maturity date.
| Structure | Access | Suits |
|---|---|---|
| 4 rungs × 3 months | Every quarter, all within a year | Cash you may need this year; inverted curves |
| 5 rungs × 12 months | Annually, up to five years | The classic general-purpose ladder |
| 10 rungs × 6 months | Twice yearly, up to five years | Larger balances wanting smooth averaging |
| 3 rungs × 12 months | Annually, up to three years | A known expense two to three years out |
Read the maturity instructionsMost CDs auto-renew at the prevailing rate unless you instruct otherwise, and the renewal rate is frequently poor. There is usually a short grace period — typically seven to ten days — in which you can withdraw or redirect without penalty. Diarise every maturity date the moment you open the rung.
When a ladder is the wrong tool
- For your emergency fund. An emergency does not wait for a maturity date. Keep that money in instant-access savings.
- When savings rates match CD rates. If a variable account pays the same as a two-year CD, you are locking money up for nothing. The model above shows this directly.
- For money you will need at an unpredictable time. A house deposit with no fixed completion date is a poor fit.
- For long-term goals. Over ten years and more, cash reliably loses to a diversified portfolio. Ladders are for defined, near-term needs.
CD ladder or Treasury ladder?
The same structure works with Treasury bills, and the choice between them turns on tax and liquidity rather than headline yield.
| CD ladder | Treasury ladder | |
|---|---|---|
| Protection | Deposit insurance to the limit | Full government backing, no limit |
| State / local tax | Generally taxable | Often exempt from state tax |
| Early access | Penalty, but principal is safe | Sell at market — price may be below par |
| Admin | One account per bank | One brokerage or treasury account |
| Best for | Insured simplicity, smaller balances | High earners in high-tax states, larger balances |
For higher earners the state-tax exemption frequently dominates a small yield difference — the arithmetic is worked through in the Treasury bills guide. Above deposit insurance limits, Treasuries also avoid the need to spread balances across multiple institutions.
Limits, errors and borders of the standard advice
Critical reviewLaddering is presented as a universally prudent structure. It is a specific tool with specific failure modes, and much of the advice promoting it comes from institutions that benefit from locking up deposits at rates they set.
"A CD ladder gives you the best of both worlds — yield and liquidity."
The claimStaggered maturities deliver long-term rates with regular access to cash.
Where it breaksThe liquidity is partial and scheduled, which is not the same as available. Only one rung matures at a time, so an unexpected need for a large sum still means breaking a certificate and paying a penalty — the ladder gives you liquidity on the bank's calendar, not on your emergency's. The yield advantage is also conditional: when the curve is flat or inverted, long rungs pay no more than short ones and you have accepted lock-up for nothing. And the structure adds real administrative overhead, with automatic renewal at unattractive rates being the most common way ladders quietly decay.
The borderA ladder works well for money with a known schedule — planned expenses, a rolling cash allocation, a retiree's spending reserve. It is a poor fit for a true emergency fund, and pointless when short rates match or exceed long ones. Check the curve before extending the rungs.
"Lock in long-term rates when rates are high."
The claimHigh prevailing rates are an opportunity to secure income for years.
Where it breaksThis is a forecast wearing the costume of prudence. "Rates are high" is a judgement about the future, and the market has already priced its own expectation into the term structure — if longer terms pay less than short ones, that is the market telling you it expects cuts, and locking in is a bet against that. High nominal rates also frequently accompany high inflation, so the real return being locked in can be poor or negative even while the headline number looks excellent. Committing multi-year money on a rate view is exactly the market timing that the same sources warn against elsewhere.
The borderExtending duration is defensible when you have a genuine matching liability at that horizon, or when the real — not nominal — rate is attractive relative to history. It is not a substitute for a view you cannot have, and the ladder itself exists precisely so you do not have to make this call.
"CDs are risk-free."
The claimInsured deposits with a fixed rate carry no risk.
Where it breaksThey remove credit and market risk and retain two others. Inflation risk is the significant one: a fixed nominal rate locked for several years can deliver a negative real return, and unlike a variable account you cannot respond. Reinvestment risk is the second — at maturity you must accept whatever rates then exist, which is the mirror image of the lock-in benefit. Callable certificates add a further asymmetry that is easy to miss in the fine print: the issuer can end the contract when it suits them, not when it suits you. And "risk-free" is often extended informally to brokered certificates, whose secondary-market pricing behaves quite differently.
The borderGenuinely excellent for nominal certainty over a defined period, which is a real and useful property. Do not treat nominal certainty as real certainty, avoid callable structures unless compensated for the option you are selling, and check whether a brokered certificate is what you think it is.
"Early withdrawal penalties make CDs inflexible — avoid them."
The claimThe penalty for breaking a certificate makes the product unsuitable.
Where it breaksThe penalty is a known, bounded, and often small cost — typically a defined number of months of interest — which makes it a priceable option rather than a barrier. In some cases the rate premium over a savings account exceeds the penalty within months, meaning breaking early still leaves you ahead of not having laddered at all. The blanket warning also ignores no-penalty products, which trade a little yield for the exit right. Treating the penalty as disqualifying causes people to hold everything in low-yield cash to preserve flexibility they never use.
The borderCompute the break-even: compare the rate premium against the penalty in months of interest. If the premium repays the penalty quickly, the lock-up is much cheaper than it appears. The warning holds only for genuinely unpredictable money, which should not have been laddered anyway.
We publish no rates or penalty terms, which keeps the article current but means the break-even calculations we recommend cannot be completed from this page alone. Our preference for ladders over simply holding a competitive savings account is also weaker than it sounds whenever short-term rates are close to long-term ones — which is a substantial share of the time, and in those periods the extra structure buys very little. And this treatment covers deposit certificates only; government bills and short bond funds solve overlapping problems with different tax and liquidity characteristics.
Frequently asked questions
What happens if I need money before a rung matures?
You break one rung and pay the early withdrawal penalty, usually three to twelve months of interest on that rung only — the rest of the ladder is untouched. This is precisely why rungs should be sized so a single one covers a plausible unexpected need.
Should I use a no-penalty CD instead?
No-penalty CDs allow withdrawal after a short initial period at a slightly lower rate. They are a reasonable middle ground when you want rate certainty but genuinely might need the money, though a high-yield savings account often pays comparably with fewer conditions.
Are brokered CDs worth considering?
They offer wider rate shopping and can be sold on a secondary market rather than broken, but the sale price fluctuates with rates so you can realise a loss. They also complicate insurance tracking across multiple issuing banks. Useful at scale, unnecessary for a first ladder.
Should I build the ladder all at once?
Yes — buying every rung on day one is the standard construction, because the staggered terms create the stagger in maturities. Waiting to buy rungs over time is an attempt to time rates, which is the exact behaviour the ladder exists to eliminate.
The bottom line
Decide when you might need the money, then build rungs that mature at those intervals. Compare the blended yield against a good instant-access savings rate — if the gap is under half a percentage point, the ladder is not earning its complexity. And keep your emergency fund entirely outside the structure, because the one thing a ladder cannot provide is money today.
Revision log. Jul 2026: added the ladder design model with inverted-curve handling and the CD vs Treasury comparison. Reviewed twice yearly.