U.S. T-Bill Ladder: Start With $100 and Keep It on Track

A T-bill ladder staggers short-term Treasury bill maturities so you get predictable access to cash while capturing current yields. It suits readers who want low credit risk, a known timeline for when money becomes available, and better returns than a typical savings account. You can build one through TreasuryDirect directly or through a brokerage account.

TL;DR:

• A four rung, 12 month ladder can use $1,000 in 13 week bills maturing every three months, then roll each maturity forward.

• TreasuryDirect requires a $100 minimum and holds new purchases for 45 calendar days; use a broker if early secondary market sales matter.

• T bill interest is federally taxable but exempt from state and local income taxes, and must be reported when the bill matures or is sold.

• Keep emergency money in an instant access savings account because TreasuryDirect cannot sell bills early, and bills do not mature on demand for unexpected expenses.

Table of Contents

• What a T-bill ladder looks like and when to use it

• Step-by-step: build a simple T-bill ladder (worked example)

• Where and how to buy T-bills in the United States (TreasuryDirect vs broker)

• Tax and reporting essentials for T-bill ladders in the U.S.

• Practical management: reinvestment, autoroll, liquidity and common pitfalls

• How PsyFi helps you plan and stick to a T-bill ladder

• When a T-bill ladder makes sense for most savers

• Tools to help you plan your T-bill ladder

• FAQ

• Sources

What a T-bill ladder looks like and when to use it

A ladder works by splitting your cash across several Treasury bills that mature on different dates instead of buying one bill all at once. As each rung matures, you get principal back on a predictable schedule, whether you spend it, reinvest it, or roll it into a new bill further out on the ladder. This structure smooths out the timing risk of needing cash exactly when rates have moved against you.

Ladders typically use a mix of these common terms, which follow a regular auction cadence:

• 4-week and 8-week bills for very short horizons

• 13-week (3-month) bills for quarterly rungs

• 26-week (6-month) bills for a mid-length ladder

• 52-week (1-year) bills for the longest rung in a simple ladder

A T-bill ladder fits well when you’re saving for a known expense, like a tax bill or a down payment in a year, or when you want a conservative place to park cash that still earns a real yield. It is less suited to money you might need on a random Tuesday, since bills don’t mature on demand.

Step-by-step: build a simple T-bill ladder (worked example)

Building a ladder is mostly a matter of deciding your horizon, then spacing your rungs evenly across it.

1. Pick your ladder horizon: a 3-month ladder using 4-week bills, or a 12-month ladder using 13-week and 26-week bills, are both common starting points.

2. Decide how many rungs you want: four rungs for a 3-month ladder, or four rungs spaced three months apart for a 12-month ladder.

3. Divide your principal evenly across rungs, in $100 increments to match the TreasuryDirect minimum bid.

4. Place your purchases at auction or on the secondary market through a broker, noting each bill’s issue and maturity date.

5. Set a reminder near each maturity date to reinvest, roll into a new rung, or withdraw the cash.

Say you have a modest sum to ladder over a year using 13-week bills, buying a new rung every three months. You could structure it as:

• Rung 1: $1,000 maturing in month 3

• Rung 2: $1,000 maturing in month 6

• Rung 3: $1,000 maturing in month 9

• Rung 4: $1,000 maturing in month 12

Once the first rung matures, you can roll it into a new 13-week bill, extending the ladder indefinitely while a portion of your cash becomes available every three months. This is the core appeal: instead of locking up the full amount until a single date, you get a steady drip of liquidity while the rest keeps earning.

Where and how to buy T-bills in the United States (TreasuryDirect vs broker)

You can buy T-bills two ways: directly through TreasuryDirect, the U.S. government’s own platform, or through a brokerage account that offers Treasury auctions and secondary-market trading.

On TreasuryDirect, you open an individual account, use the Buy Direct tab, and place a non-competitive bid, which guarantees you receive the bill at the auction’s final rate. The minimum purchase is $100, and you can set up automatic reinvestment so maturing proceeds roll into a new bill of the same term. One detail worth flagging early: TreasuryDirect holds new purchases for 45 calendar days before you can transfer or sell them, which matters if you think you might need to exit a position early.

Brokers offer a different trade-off:

• They often let you sell bills on the secondary market before maturity, which adds liquidity TreasuryDirect doesn’t offer directly.

• They may charge small markups or fees that TreasuryDirect doesn’t.

• They can simplify consolidating a ladder alongside other holdings in one account.

Pro Tip: Check the auction schedule before you plan your rungs, since 4-week and 8-week bills auction weekly while 52-week bills auction only every four weeks.

Tax and reporting essentials for T-bill ladders in the U.S.

T-bill interest is exempt from state and local income taxes, though it remains subject to federal income tax, according to IRS Topic 403. That exemption can matter more than it first appears if you live in a state with meaningful income tax, since it effectively boosts your after-tax yield relative to a taxable account earning the same nominal rate.

T-bills are sold at a discount to face value, and the difference between what you pay and what you receive at maturity counts as your interest. The IRS requires you to report that interest in the year the bill matures or is sold, not the year you bought it.

A few practical points for staying organized:

• TreasuryDirect provides tax-form guidance explaining how 1099-INT and related entries are generated for your account.

• If a rung matures near December 31, the interest lands in that tax year, which can shift your taxable income between years depending on timing.

• Keep your TreasuryDirect or brokerage statements handy for tax season, since they summarize interest in security.

Practical management: reinvestment, autoroll, liquidity and common pitfalls

Once your ladder is running, the main job is keeping it on schedule. TreasuryDirect lets you set up automatic reinvestment so a maturing bill rolls straight into a new one of the same term, which keeps the ladder self-sustaining without you placing a fresh order every few weeks. Calendar reminders still help, since you’ll want to confirm the reinvestment went through and adjust amounts if your goals change.

Liquidity is the one place a T-bill ladder asks for patience. Selling early through TreasuryDirect isn’t really an option since it doesn’t support secondary-market sales, and new purchases face that 45-day holding period before any transfer. A brokerage account tends to offer more flexibility if you think you might need to exit a position before maturity.

A few habits keep a ladder running smoothly:

• Don’t put your entire emergency fund into a ladder. Keep a portion in an instant-access account for true emergencies.

• Review your rungs every few months to confirm reinvestment amounts still match your goals.

• Track issue and maturity dates in a simple spreadsheet or calendar so nothing catches you off guard.

Pro Tip: Pair your ladder with a separate high-yield savings account for same-day needs, and let the ladder handle the money you know you won’t touch for weeks or months.

How PsyFi helps you plan and stick to a T-bill ladder

We built our AI engine to spot the behavioural patterns that derail saving plans, including the kind of inconsistent follow-through that can quietly unravel a ladder’s reinvestment schedule. Our approach combines that analysis with real-time coaching tailored to your actual financial behaviour, not generic advice.

Our savings goal calculator and compound interest calculator help you size your ladder and figure out how much to allocate per rung. Once you link your accounts with us, we can send reminders that keep your reinvestment schedule on track instead of letting a maturing bill sit uninvested.

When a T-bill ladder makes sense for most savers

A T-bill ladder earns its place for short-term parking and known upcoming expenses, from a tax bill to next year’s tuition. Keep enough in instant-access savings outside the ladder so a predictable tool never becomes an inconvenient one.

— Maanya

Tools to help you plan your T-bill ladder

Sizing a ladder gets easier with the right inputs. Our free U.S. finance calculators include tools for savings goals, compound interest, and debt payoff planning, all useful for figuring out how much to commit to a ladder versus other priorities. If you want ongoing coaching to keep your reinvestment schedule on track, our Premium plans start with a 7-day free trial before billing at $9.99 USD per month or $69.99 USD per year.

This article is general information, not a substitute for advice from a qualified financial advisor. Consult a qualified financial professional about your own circumstances before acting on anything here.

FAQ

What is the minimum amount needed to start a T-bill ladder?

You can start with as little as $100 per bill through TreasuryDirect, since that’s the minimum bid for Treasury marketable securities. A simple four-rung ladder can be built by splitting your investment evenly across the rungs.

How does a T-bill ladder compare to a CD ladder?

Both strategies stagger maturities to balance yield and liquidity, but T-bills carry the backing of the U.S. government and their interest is exempt from state and local income tax, while CD interest is fully taxable at the state level. CDs may also charge early-withdrawal penalties, while T-bills simply can’t be sold early through TreasuryDirect without using a broker.

Do I need a broker to build a T-bill ladder?

No, you can build and manage a full ladder directly through TreasuryDirect using the Buy Direct tab and setting up automatic reinvestment. A broker becomes useful mainly if you want the option to sell a bill before maturity on the secondary market.

How is T-bill interest taxed?

T-bill interest is subject to federal income tax but exempt from state and local income taxes, and it’s reported in the year the bill matures or is sold, according to IRS Topic 403. TreasuryDirect provides tax-form guidance to help you track what shows up on your 1099.

Can I sell a T-bill before it matures?

TreasuryDirect doesn’t support secondary-market sales, and new purchases are held for 45 calendar days before any transfer is possible. A brokerage account that offers Treasury trading can give you more flexibility to sell early if you need the cash sooner than planned.

Sources

• Buying a Treasury marketable security — TreasuryDirect

• Topic No. 403, Interest received — Internal Revenue Service

Recommended

• How to Start Investing With $100 or Less: Beginner’s Guide

• U.S. Savers: 3 Moves to Pick the Right High Yield Savings Ac

This content is provided for general informational and educational purposes only and does not constitute financial, investment, tax, or legal advice. PsyFi provides financial coaching tools and behavioral insights, not regulated advisory services. Always consult with a qualified financial advisor or tax professional regarding your personal situation before making financial decisions.