Short-term notes are debt instruments that promise to repay a fixed amount within one year or less, and they include Treasury bills, commercial paper, certificates of deposit, banker’s acceptances, and municipal notes. Governments, corporations, and banks issue them to raise quick cash; investors buy them for a safe, liquid place to hold money. In early 2026, Treasury bill yields sit roughly between 3.5% and 3.7%, which makes them competitive with many savings accounts while remaining easy to sell before maturity. The core trade-off is simple: you accept a modest return in exchange for low risk and fast access to your cash.
What Defines a Short-Term Note
Every short-term note shares a few traits. The maturity date falls within a year of issuance, and many mature in 90 days or less. That compressed timeline limits your exposure to interest rate swings and default risk compared to bonds that lock money up for five, ten, or thirty years. The yield is lower precisely because the risk is lower.
Returns come in one of two forms. Most government-issued notes are zero-coupon: they sell at a discount to face value, and the difference is your return. Pay $9,900 for a note with a $10,000 face value and a 90-day term, and the $100 gap is what you earn. Other notes, particularly those issued by banks, pay a stated interest rate on the face value until maturity. Which method applies depends on the issuer and the market convention for that instrument.
Liquidity is the other defining feature. An active secondary market exists for most short-term notes, so you can sell before maturity if you need cash sooner. Because these instruments sit so close to their repayment date, market prices barely move, and selling early rarely costs you much.
The Main Types
Treasury Bills
Treasury bills are the short-term debt of the U.S. federal government, backed by its full faith and credit. That backing makes T-bills the closest thing to a risk-free investment in American financial markets. They are issued in seven maturities: 4, 6, 8, 13, 17, 26, and 52 weeks, all sold at a discount to face value.1TreasuryDirect. Treasury Bills
Individual investors typically place non-competitive bids in Treasury auctions, meaning they agree to accept whatever discount rate the auction produces. In exchange, their purchase is guaranteed in full, capped at $10 million per auction. Competitive bids, placed through banks or brokers, let institutional buyers specify a discount rate, but those bids may be partially filled or rejected if the rate is too high.2TreasuryDirect. Treasury Bills In Depth
T-bill yields function as the baseline risk-free rate that analysts use when calculating expected returns on riskier investments. As of early 2026, coupon-equivalent yields run from roughly 3.45% on the 52-week bill to about 3.69% on the 4-week bill.3U.S. Department of the Treasury. Daily Treasury Bill Rates
Commercial Paper
Commercial paper is an unsecured promissory note issued by large corporations to cover short-term needs like payroll, inventory, or accounts receivable. The market is large: roughly $1.4 trillion outstanding in early 2026.4Board of Governors of the Federal Reserve System. Commercial Paper Rates and Outstanding Summary Average maturities run about 30 days and can extend up to 270 days.5Board of Governors of the Federal Reserve System. Commercial Paper Rates and Outstanding Summary
The vast majority of issuers carry top-tier credit ratings, because buyers in this market — money market funds, pension funds, and banks — have little appetite for lower-rated unsecured corporate debt. A rating downgrade can shut an issuer out of the commercial paper market overnight.
Certificates of Deposit
A certificate of deposit is a time deposit at a bank or credit union that pays a fixed interest rate for a set period. CDs with terms of a year or less function as short-term notes. The rate is locked at purchase, giving you a predictable return but no upside if rates rise during the term.
CDs at FDIC-insured banks carry protection no corporate note can match: deposit insurance covers principal and accrued interest up to $250,000 per depositor, per bank, per ownership category.6Federal Deposit Insurance Corporation. Understanding Deposit Insurance The “per ownership category” detail matters. Hold CDs in both a single account and a joint account at the same bank, and each category gets its own $250,000 limit.7Federal Deposit Insurance Corporation. Deposit Insurance FAQs
The catch is the early withdrawal penalty. Federal rules require a minimum penalty of at least seven days’ simple interest if you pull money out within the first six days. Most banks impose steeper penalties throughout the full term, often 90 days to a full year of interest depending on the CD’s length. Large-denomination CDs (typically $100,000 or more) can sometimes be traded on the secondary market, which lets holders sidestep the penalty issue.
Banker’s Acceptances
A banker’s acceptance is a time draft that a bank has stamped “accepted,” making payment an unconditional obligation of the bank rather than just a promise from the original drawer. These instruments exist primarily to finance international trade.8Federal Reserve Bank of Richmond. Instruments of the Money Market – Chapter 10 – Bankers Acceptances An American importer without a direct financing relationship abroad can have its bank accept a draft, lending the bank’s creditworthiness to the transaction. The bank can then hold the acceptance as a short-term loan or sell it on the secondary market at a discount, much like a T-bill.
Municipal Notes
State and local governments issue short-term notes when they need cash before expected revenues arrive. The main varieties:
- Tax anticipation notes (TANs) are repaid from upcoming tax collections, bridging the gap when a municipality needs to spend before property or sales tax revenue arrives.
- Revenue anticipation notes (RANs) work the same way but are repaid from future non-tax revenue, such as fees from a public facility or intergovernmental transfers.
- Bond anticipation notes (BANs) are repaid with proceeds from a future long-term bond issuance, letting a municipality start a project before the full financing is arranged.
Municipal notes typically mature in three months to three years. Interest on many municipal notes is exempt from federal income tax, and sometimes from state and local tax as well, which can make their after-tax yields competitive despite lower nominal rates.
How to Buy Them
Individual investors have three main paths, each suited to a different level of involvement.
The most direct route for Treasury bills is TreasuryDirect, the government’s own platform. You open a free account, link a bank account, and place non-competitive bids at upcoming auctions. The minimum purchase is $100, and you can buy in $100 increments up to $10 million per auction.9TreasuryDirect. Buying a Treasury Marketable Security One restriction: bills purchased through TreasuryDirect must be held for at least 45 days before you can transfer or sell them, unless the purchase was a reinvestment of a maturing security.
Brokerage accounts offer broader access. Most major brokers let you buy T-bills, CDs, and sometimes commercial paper on the secondary market. Many charge no commission on Treasury transactions placed online, though representative-assisted trades and non-Treasury bonds may carry small fees or markups. A brokerage account also makes it easier to build a laddered portfolio, staggering maturity dates so a portion of your holdings comes due at regular intervals.
The simplest option for most people is a money market fund. These funds pool investor cash and buy a diversified mix of T-bills, commercial paper, CDs, and other short-term instruments. SEC rules require money market funds to keep their weighted average portfolio maturity at 60 days or less and prohibit them from buying any single instrument with a remaining maturity beyond 397 days.10eCFR. 17 CFR 270.2a-7 – Money Market Funds You get daily liquidity without having to research individual notes or manage maturity dates.
Tax Treatment
The tax picture depends on what you hold.
Treasury bill returns are subject to federal income tax but exempt from all state and local income taxes.11Internal Revenue Service. Topic No. 403, Interest Received That exemption can meaningfully boost your after-tax return if you live in a high-tax state. T-bills don’t pay “interest” in the traditional sense; the return is the discount between purchase price and face value. But the IRS treats that discount as interest income, reported on Form 1099-INT when the bill is redeemed at maturity.12Internal Revenue Service. IRS Publication 1212 – Guide to Original Issue Discount Instruments
CD interest is ordinary income, taxable at both the federal and state level. You owe tax on interest as it accrues, even if the CD hasn’t matured and you haven’t received a payout. If your bank credits $10 or more in interest during the year, you’ll receive a 1099-INT.11Internal Revenue Service. Topic No. 403, Interest Received
Commercial paper returns are also ordinary income at both the federal and state level, with no state exemption. Municipal notes often pay interest that’s exempt from federal income tax and may be exempt from state tax as well if you live in the issuing state.
Risks Worth Knowing
Short-term notes are among the safest investments around. Safe doesn’t mean riskless, though, and a few downsides deserve honest attention.
Reinvestment risk is the biggest one. When your 13-week T-bill matures, you need to buy a new one, and if interest rates have dropped in the meantime, your next bill will yield less. Longer-term bonds lock in a rate for years; short-term note holders are fully exposed to rate movements each time a note matures. The same short duration that protects you from rate-driven price declines also forces you to reinvest frequently at whatever the current rate happens to be.
Inflation erosion is subtler. If a 13-week T-bill yields 3.7% and inflation runs at 3%, your real return is barely positive. In periods when inflation exceeds short-term yields, your purchasing power actually shrinks even as your account balance grows. Longer-term bonds and equities have historically offered better inflation protection over extended horizons.
Credit risk exists for non-government instruments. Commercial paper is unsecured, meaning no collateral backs the issuer’s promise. If the issuing corporation hits financial trouble, holders can suffer losses. This risk is small for top-rated issuers but not zero. T-bills and FDIC-insured CDs are effectively free of credit risk.
Opportunity cost is the most overlooked disadvantage. Money sitting in short-term notes isn’t earning the higher long-run returns available from stocks, real estate, or longer-term bonds. For capital you won’t need for years, the safety premium may not be worth it.
Where They Fit in a Portfolio
The typical use case isn’t making money. It’s not losing money while you wait to do something else. Investors hold short-term notes for cash they’ll need relatively soon: upcoming tax payments, a down payment on a house expected within the year, or capital earmarked for a future investment that hasn’t materialized yet. The emphasis is on capital preservation.
Within a balanced portfolio, short-term notes act as ballast. When equity markets drop, the short-term fixed-income portion barely moves, reducing overall volatility. An investor holding T-bills can quickly liquidate them to buy stocks or other assets that have fallen to attractive prices. That flexibility is worth something, even if the yield itself is modest.
Portfolio managers often use a laddering strategy with T-bills, buying bills that mature at staggered intervals (say, every four weeks) to create a predictable stream of cash flow. Laddering also smooths out reinvestment risk, because only a fraction of the portfolio rolls over at any given rate rather than all of it at once. Money market funds serve a similar function for investors who don’t want to manage individual maturities; the fund handles the buying, rolling, and diversifying, passing the blended yield through to shareholders with daily liquidity.