A treasury bill ladder is a set of T-bills bought with staggered maturity dates so that a portion of your cash comes due on a recurring schedule instead of all at once. Instead of guessing whether rates will be higher or lower next month, you buy across several maturities now and let time do the rest. Here is exactly how to set one up in 2026.
What changed in 2026
- Brokerages added auto-rollover features for treasury purchases, letting a maturing bill's proceeds automatically buy a new bill at the same rung without manual reordering.
- Short-term yields stayed attractive relative to savings accounts, keeping ladders a popular way to park cash that is not needed immediately but might be needed within a year.
- Auction calendars remained predictable and frequent, across 4-, 8-, 13-, 17-, 26-, and 52-week bills, giving ladder-builders plenty of rungs to choose from.
How a T-bill ladder works
The idea is simple: instead of putting all your cash into one maturity, you split it across several. As each bill matures, you either take the cash or reinvest it into a new bill at the ladder's longest rung, keeping the schedule rolling. The result is a rotating set of maturities where something is always coming due, smoothing out the risk of locking in a single rate at a single moment.
Building your ladder: step by step
- Decide your total cash amount and time horizon. Money you might need within the next year is the typical target for a T-bill ladder rather than a bond ladder.
- Choose your rungs. A common setup uses four rungs — for example 13, 26, 39, and 52 weeks — though a shorter ladder of 4, 8, 13, and 26 weeks works for money needed sooner.
- Divide your total evenly across the rungs. Equal dollar amounts in each maturity keeps the math simple and the schedule predictable.
- Buy all rungs at once, either at TreasuryDirect auctions or through a brokerage that offers treasury auction access.
- When the shortest rung matures, decide: reinvest or spend. To keep the ladder going, buy a new bill at the longest rung length; to wind it down, take the cash.
- Repeat on schedule. Over time, this creates a steady cycle where a rung matures roughly as often as your shortest maturity length.
Example ladder
A hypothetical $20,000 split across four rungs might look like this at the start:
| Rung |
Maturity |
Amount |
Approximate maturity date |
| 1 |
13 weeks |
$5,000 |
~3 months out |
| 2 |
26 weeks |
$5,000 |
~6 months out |
| 3 |
39 weeks |
$5,000 |
~9 months out |
| 4 |
52 weeks |
$5,000 |
~12 months out |
Three months in, rung 1 matures. Reinvesting that $5,000 into a new 52-week bill keeps the ladder at four rungs, now spaced roughly three months apart going forward — a bill matures every quarter indefinitely.
Common mistakes
Laddering too small an amount. If each rung is only a few hundred dollars, the extra setup and tracking effort outweighs the benefit versus simply holding one bill or a money-market fund.
Uneven rung sizing without a reason. Unless you have a specific cash-flow need on a particular date, equal amounts per rung keep the strategy easy to manage and reason about.
Forgetting to reinvest. If the goal is an ongoing ladder rather than a wind-down, a maturing bill that just sits in cash breaks the schedule and defeats the purpose.
Ignoring the settlement lag. Funds from a matured bill and a new purchase do not always settle instantly — check the timing so you are not short of cash between steps.
FAQ
How many rungs should a ladder have?
Four is a common starting point, balancing manageable complexity against a reasonably frequent maturity cycle. More rungs smooth things further but add tracking overhead.
Can I ladder using a brokerage instead of TreasuryDirect?
Yes, most major brokerages offer direct treasury auction access, and some now automate the reinvestment step, which reduces the manual work considerably.
Is a T-bill ladder better than a bond fund?
For money with a specific near-term horizon, a ladder offers known maturity dates. For general ongoing fixed-income exposure, a bond fund is simpler to maintain — see bond funds vs individual bonds for the fuller tradeoff.
What happens if I need cash before a rung matures?
You can sell a T-bill on the secondary market before maturity, though the price will reflect current rates rather than your original purchase price.
Where to go next
For the mechanics behind each rung, see treasury bills explained for 2026. To weigh bills against longer maturities, read treasury bills vs bonds in 2026, and for the individual-bond-versus-fund decision generally, see bond funds vs individual bonds.