Does Buying a Treasury Bill Work Differently Than Buying a Treasury Note?
Treasury bills and notes both come from the same issuer and move through the same general auction process, but the mechanics of buying each one, and what a buyer actually ends up holding, diverge in a few important ways.
The short answer
Both securities are purchased the same basic way, through a competitive or noncompetitive bid at auction, but a bill is sold at a discount to its face value and pays that difference at maturity rather than periodic interest, while a note is generally priced closer to face value and pays interest on a regular schedule until it matures.
How pricing differs
- A bill is a pure discount instrument: there’s no stated coupon, and the return comes entirely from the gap between the discounted purchase price and the full face value paid at maturity.
- A note carries a coupon rate and pays interest on a set schedule, and its purchase price can land above, at, or below face value depending on where its coupon sits relative to prevailing yields at auction.
Maturity length and what that means for the buyer
Bills are short-term instruments, typically maturing within about a year, while notes stretch further out, generally a few years to roughly a decade. That difference in horizon is often the real driver of which one someone considers in the first place, since it connects directly to why investment time horizon matters for any purchase, not just these two.
The auction and purchase mechanics
Both bills and notes are offered through regularly scheduled public auctions, and a buyer can typically choose between two bidding approaches:
- A noncompetitive bid accepts whatever yield the auction determines, with the bid fully filled up to any applicable purchase limits.
- A competitive bid specifies a desired yield, but risks being only partially filled, or not filled at all, if the rate requested doesn’t clear the auction.
The steps for placing either type of bid are largely the same whether the security being auctioned is a bill or a note; what changes afterward is how the return is delivered, as a lump-sum discount payoff versus a stream of coupon payments.
Tracking what you actually bought
Once a purchase settles, each specific bill or note issue carries a unique identifying number that lets a holder confirm exactly which security is sitting in the account, separate from any other bill or note issued around the same time. This matters more than it might seem, since the government routinely has multiple bills and notes outstanding at once, and a broader comparison of bills, notes, and longer bonds can help clarify how a given holding fits into that lineup.
What to weigh
Choosing between a bill and a note is less about which is harder to buy, since the process is nearly identical, and more about which payout shape and time horizon fits the money being invested. A discount instrument with no coupon behaves differently in a portfolio than one paying regular interest, even when both come from the same issuer and the same kind of auction.