If you have cash you will not need for a few months and it is sitting in an account earning almost nothing, Treasury bills are worth understanding. They are short-term loans to the federal government, considered about as safe as any investment gets, and you can buy them straight from the source with no broker and no fees. The process intimidates people who have never done it, but it is genuinely straightforward once you have seen it laid out.

The place to buy them without a middleman is the government’s own website, TreasuryDirect.gov. Here is what a Treasury bill is and how to buy one.

What a T-bill actually is

A Treasury bill, or T-bill, is a short-term government security that matures in a year or less. They are issued in terms of 4, 8, 13, 17, 26, and 52 weeks. Unlike a bond, a T-bill does not pay periodic interest. Instead you buy it for less than its face value and receive the full face value at maturity. The difference is your interest. Buy a bill for $980 and collect $1,000 in a few months, and that $20 is what you earned.

You can start small. TreasuryDirect sells bills in increments as low as $100, so this is not a product reserved for the wealthy. The safety comes from the issuer: T-bills are backed by the full faith and credit of the United States, which is why they are treated as a benchmark for a risk-free short-term return.

A tax advantage worth knowing

The interest you earn on a T-bill is subject to federal income tax, but it is exempt from state and local income tax. For someone in a state with a high income tax, that exemption can make a T-bill more attractive than a bank CD paying the same headline rate, because you keep more of the interest. It is a small detail that quietly improves the real return.

Opening an account

Buying direct means opening a TreasuryDirect account, which is free. You will need your Social Security number, a bank account to link for payment and payouts, and an email address. The site walks you through setup. Once the account is open and your bank is linked, you are ready to buy, and the same account holds your bills, shows their maturity dates, and receives the proceeds automatically.

Placing a non-competitive bid

T-bills are sold at auction on a regular schedule. As an individual, you place what is called a non-competitive bid, which simply means you agree to accept whatever interest rate the auction sets. You are not trying to outguess the market; you are taking the going rate. Choose the term you want, enter the dollar amount, and submit. On the auction date the price is set, the money is drawn from your linked bank account, and the bill is yours.

When the bill matures, TreasuryDirect deposits the full face value back into your bank account. You can also choose to reinvest automatically, rolling the proceeds into a new bill of the same term, which is how many people build a simple ladder of bills that mature in a steady rhythm.

Is it right for your cash?

T-bills shine for money you want to keep safe and can leave alone until a set date, an emergency reserve, a down payment you will need next year, or cash parked between other uses. They are not for money you might need at a moment’s notice, because getting out early means selling on the secondary market rather than simply withdrawing. For truly instant access, a high-yield savings account is the better fit.

For a first-time buyer, the honest takeaway is that this is easier than it looks. Open the account, link your bank, pick a term, and place a non-competitive bid. You are lending to the U.S. government at the prevailing rate, keeping your interest free of state tax, and doing it without paying anyone a fee. For short-term savings that would otherwise earn next to nothing, that is a solid, low-drama option.

This article was produced with AI assistance and reviewed by a human editor. Figures are linked to their primary sources; where a claim could not be verified from the public record, we say so.