T-bill rates today for every Treasury bill term, 4 to 52 weeks

Treasury bill rates for every term from 4 to 52 weeks, taken from Treasury's daily data: the discount rate, investment yield, price per $1,000 and change over a month and a year, plus recent auction results and how to read each figure.

By Sonic Wallet Editorial Team· Updated · 8 min read

Key takeaways

  • Treasury publishes one official set of T-bill rates each business day, built from secondary-market quotes taken at about 3:30 PM Eastern. Each term shows a discount rate, used for pricing, and an investment yield, the higher figure to compare with savings, CDs and other bonds. This page picks up each new day's figures within a few hours of Treasury posting them.
  • On October 30, 2026, investment yields ran from 3.98% on the 4-week bill to 4.36% on the 52-week, with the federal funds target range at 3.75% to 4.00%.
  • Auction results differ from the daily table: each auction sets one high rate that every accepted bidder receives, while the daily figures are closing bid quotes on bills already trading.
  • To compare a bill with a savings account, convert its investment yield to an APY and allow for state tax: a 4.08% 13-week yield works out to about 4.14% APY, free of state and local income tax.
  • Bills were only narrowly ahead of inflation in late 2026: consumer prices rose 3.7% in the 12 months to September, so at a 24% federal tax rate a 4.08% bill lost purchasing power.

Treasury records one official set of bill rates for each business day, and the table below carries the latest set for all seven terms. The figures are closing quotes from the secondary market, where issued bills change hands, so they show where each term traded at the end of the day, not the rate the next auction will set. Below the table: how to read each column, how quotes relate to auction results, when new figures arrive and how to compare a bill with a savings APY. For everything else about owning Treasuries, start at the US Treasuries hub.

Treasury bill rates on Oct 30, 2026
TermDiscount rateInvestment yieldPrice per $1,000Yield vs a month agoYield vs a year ago
4-week3.91%3.98%$996.96+0.07 pts0.00 pts
6-week3.91%3.98%$995.44-0.04 pts+0.04 pts
8-week4.00%4.08%$993.78+0.02 pts+0.11 pts
13-week3.99%4.08%$989.91-0.05 pts+0.23 pts
17-week4.07%4.18%$986.55-0.05 pts+0.31 pts
26-week4.11%4.25%$979.22-0.09 pts+0.43 pts
52-week4.17%4.36%$957.84-0.18 pts+0.66 pts
Source: US Department of the Treasury, Daily Treasury Bill Rates, as of Oct 30, 2026. These are secondary-market closing rates, so they differ slightly from auction results. The discount rate is the bank discount rate; the investment yield is the coupon-equivalent yield. Price per $1,000 is for a bill with exactly that term, from the discount rate. Comparisons use Sep 30, 2026 and Oct 30, 2025.

How do you read the T-bill rate table?

Each row is one bill term, and its two rates describe the same bill in two conventions; use the investment yield whenever you compare a bill with anything else.

  • Term. The bill's length at issue. The 13-week bill is the one usually called the 3-month T-bill, and the 52-week is the 1-year bill. Each row quotes the most recently auctioned bill of that term.
  • Discount rate. The dollar discount as a share of face value, annualized over a 360-day year. Bills are bid and priced in this convention.
  • Investment yield. Treasury's coupon-equivalent yield: the same discount measured against the price paid and annualized over 365 days, or 366 when the year after issue includes February 29. It is always the higher rate, and for the 52-week bill it assumes compounding at the half-year, as a note's yield does.
  • Price per $1,000. What $1,000 of face value costs at the row's discount rate for exactly that term, such as 91 days for the 13-week bill. The shortfall from $1,000 is the interest paid at maturity.
  • Change over a month and a year. The move in the investment yield, in percentage points, since the nearest business day on or before the same date a month and a year earlier.

Because Treasury rounds its quotes to two decimals and the quoted bill has often been trading for a few days, recomputing a yield from the discount rate can land 0.01 point off the published figure. Both formulas, with worked examples, are on T-bill discount rate vs investment rate. Bill yields also track the Fed's policy rate, whose target range was 3.75% to 4.00% after the October 28, 2026 meeting, as how Fed rate decisions affect T-bill rates explains. For 2- to 30-year yields, see the Treasury yield curve today.

What does a $10,000 13-week bill cost today?

At today's 13-week discount rate, a $10,000 bill costs a little under $10,000, and that shortfall is the interest Treasury pays you at maturity.

Buying a $10,000 13-week Treasury bill
StepAmountHow it is worked out
Face value$10,000.00Paid back in full at maturity
Term13 weeks (91 days)Bills are quoted on a 360-day year
Discount rate3.990%the 13-week rate on Oct 30, 2026
Purchase price$9,899.14$10,000 × (1 − 3.990% × 91 ÷ 360)
Interest earned$100.86Face value minus purchase price
Investment yield4.087%Coupon-equivalent yield on a 365-day year

You pay the price on the issue date, the Thursday after the Monday auction, and receive the face value 91 days later; a bill has no coupon, so the whole return is the gap between the two. If the live rate is missing, the example uses an illustrative 4.0% discount rate and says so. The arithmetic works for any amount from $100, in $100 increments, placing an order is covered in how to buy Treasury bills, and other amounts and terms can be priced in the Treasury bill calculator.

Why are daily T-bill rates different from auction results?

Daily rates are indicative bid quotes taken around 3:30 PM on bills already trading, while an auction sets one rate, once, for a newly issued bill.

The Federal Reserve Bank of New York obtains those closing quotes for Treasury from the over-the-counter market. Four things separate them from an auction result:

  • Timing. Each term is auctioned on a fixed weekday, and the market moves in between: a Friday quote reflects four days of news the Monday 13-week auction never saw.
  • Bid side. The quotes are what dealers would pay. Buying an existing bill from a broker means paying the ask, a slightly higher price and so a slightly lower yield.
  • Auction-day demand. The high rate depends on that day's bids. The bid-to-cover ratio, the dollars bid for each dollar sold, is a rough gauge of demand.
  • Days to maturity. A bill quoted a week after issue has a week less to run, which shifts its price and yield slightly.
Recent Treasury bill auctions
Auction dateBillHigh discount rateInvestment rateBid-to-coverOffering size
Oct 15, 20268-Week bill4.050%4.132%2.26$105B
Oct 15, 20264-Week bill4.000%4.068%2.56$110B
Oct 14, 202617-Week bill4.195%4.313%2.79$75B
Oct 13, 20266-Week bill3.980%4.055%2.58$95B
Oct 13, 202626-Week bill4.200%4.351%2.76$82B
Oct 13, 202613-Week bill4.085%4.185%2.68$95B
Oct 8, 20264-Week bill3.980%4.048%2.40$110B
Oct 8, 20268-Week bill3.980%4.060%2.77$105B
Source: US Treasury auction results (TreasuryDirect and Fiscal Data), as of Oct 15, 2026. Every accepted bid receives the same high rate. Bid-to-cover is the amount bid divided by the amount accepted.

In the auction table, the high discount rate is the stop-out rate: Treasury fills noncompetitive bids first, then competitive bids from the lowest rate up until the offering is covered, and every accepted bidder, TreasuryDirect buyers included, gets that highest accepted rate. Offering size is the face amount Treasury set out to sell, and cash management bills, sold irregularly for short-term borrowing needs, can appear among the regular terms. How Treasury auctions work covers bidding and allotment.

Worked example: One 13-week bill, three different rates

Treasury auctioned 13-week bills on Tuesday, October 13, 2026, a day later than usual because Monday was the Columbus Day holiday.

  • Auction result: high discount rate 4.085%, investment rate 4.185%, price $98.967403 per $100, so $10,000 of face value cost $9,896.74.
  • Treasury's closing quote for the 13-week bill that day: a 4.09% discount rate and a 4.19% investment yield, almost identical.
  • Treasury's quote on October 30, 2026: 3.99% and 4.08%. A new 91-day bill at 3.99% would cost $10,000 × (1 − 0.0399 × 91 ÷ 360) = $9,899.14.
  • So the same $10,000 of 91-day bills paid $2.40 less interest at the October 30 quote than at the October 13 auction: 17 days of market moves worth about a tenth of a point.

When does Treasury publish new T-bill rates?

Treasury publishes one set of bill rates for each business day the bond market is open, based on quotes collected at about 3:30 PM Eastern.

Treasury says its yield curve rates, fitted to the same afternoon quotes, are usually posted by 6:00 PM Eastern Time each trading day, though system problems can delay them. Weekends and bond-market holidays get no figures: Treasury's October 2026 bill table has no entry for Monday, October 12, the Columbus Day holiday, so on such days the table above keeps the last business day's numbers.

This page checks Treasury's data several times a day and rebuilds hourly, so new figures normally appear here within a few hours of Treasury posting them. Auction results run on a different clock: TreasuryDirect buyers see their result after 5 PM Eastern on auction day, but the Fiscal Data dataset behind the auction table is updated as needed and can lag by a day or more. How these figures are sourced is described in our editorial policy.

How do T-bill rates compare with a savings account APY?

Convert the bill's investment yield to an APY, then allow for state income tax, which savings interest pays and Treasury bill interest does not.

An investment yield is a simple annual rate, while a savings APY, as defined in the Truth in Savings rules, includes a year of compounding. To compare them, compound one term's return over a year, the idea behind APY vs APR:

APY equivalent = (1 + investment yield × days ÷ 365)^(365 ÷ days) − 1

For the 52-week bill, whose yield already assumes compounding at the half-year, Treasury's conversion for semiannual yields applies instead: APY = (1 + yield ÷ 2)² − 1. Both versions assume you could reinvest at the same rate at every maturity, which nobody promises.

Worked example: A 13-week bill against a 4.00% APY savings account

Treasury's 13-week quote on October 30, 2026 was a 4.08% investment yield. Set it against a savings account paying 4.00% APY, for a saver in a state with a 5% income tax.

  • Return for one 91-day term: 4.08% × 91 ÷ 365 = 1.0172% of the price paid.
  • Bill APY equivalent: (1.010172)^(365 ÷ 91) − 1 = 4.14%.
  • Savings after state tax: 4.00% × (1 − 0.05) = 3.80%. The bill owes no state tax, so it keeps 4.14%.
  • Savings APY needed to match the bill after state tax: 4.14% ÷ 0.95 = 4.36%.
  • Federal tax applies to both, so it does not change the ranking, setting aside any federal deduction for state taxes.

Rate is only part of the choice. Savings can be withdrawn any day and are insured by the FDIC up to $250,000 per depositor, per insured bank, per ownership category; a bill is backed by the full faith and credit of the US government with no per-account cap, but the money is committed until the bill matures or you sell it. The tax rules are in are T-bills taxable, the full side-by-side is in T-bills vs high-yield savings, and the compound interest calculator shows what an APY grows to over several years.

Are T-bill rates beating inflation?

Only narrowly: September 2026's 12-month CPI inflation of 3.7% left a 13-week bill yielding about 4.1% less than half a point ahead, before tax.

3-month Treasury yield, monthly average since Jan 20000.0%2.0%4.0%6.0%2000200420082012201620202024
  • 3-month Treasury yield, monthly average
  • CPI inflation, 12-month change
Source: US Department of the Treasury and US Bureau of Labor Statistics, as of Oct 2026.
The 3-month Treasury yield in numbers
MeasureYieldMonth
Latest monthly average4.23%Oct 2026
A year earlier3.98%Oct 2025
Average over the last 10 years2.55%
Average since 20002.00%
Highest month6.36%Nov 2000
Lowest month0.01%Dec 2011
Months the yield beat CPI inflation18 of 20 (90%)

The solid line is Treasury's 3-month constant maturity yield, a monthly average since 2000 read from the par yield curve; it sits close to the 13-week bill's investment yield but is calculated differently. The dashed red line is 12-month inflation in the consumer price index for all urban consumers (CPI-U) from the Bureau of Labor Statistics. Where the solid line runs below the dashed one, bills were losing purchasing power, and the table under the chart counts the months in which the yield came out ahead.

US consumer price inflation (CPI-U)
MonthCPI-U indexChange from a year earlier
Sep 2026336.940+3.7%
Aug 2026334.980+3.4%
Jul 2026333.918+3.4%
Jun 2026333.952+3.5%
May 2026335.123+4.2%
Apr 2026333.020+3.8%
Source: US Bureau of Labor Statistics, CPI for All Urban Consumers, all items, not seasonally adjusted (CUUR0000SA0), as of Sep 2026.

Subtracting the CPI change from a bill yield gives a rough real yield, though CPI looks back over 12 months while the bill yield looks ahead; the October 2026 index is scheduled for release on November 10, 2026. Tax tightens the picture: at a 24% federal rate, a 4.08% bill keeps 4.08% × (1 − 0.24) = 3.10%, about 0.6 point below 3.7% inflation. Real returns and inflation has the exact formula. For protection against inflation itself, I bonds bought from November 1, 2026 to April 30, 2027 start at a composite rate of 5.51%, and I bonds vs T-bills weighs them against bills.

What are the risks of buying T-bills at today's rates?

The main risks are reinvesting later at a lower rate, inflation outrunning the yield, and needing to sell before maturity at whatever price the market offers.

Repayment is backed by the full faith and credit of the US government, so the uncertainty sits around the bill rather than in it:

  • Reinvestment risk. The 52-week auction cleared at a 3.345% discount rate on February 17, 2026 and at 4.400% on September 29, 2026, so the rate at your next rollover can differ by a full point within months.
  • Inflation risk. A positive yield can still lose purchasing power after tax, as the inflation section shows.
  • Price risk if you sell early. If the discount rate on a $10,000 52-week bill rose 1 point just after purchase, its value would drop by about $101; on a 4-week bill, by about $8. See selling Treasuries before maturity.
  • Access risk. Inside TreasuryDirect, a new purchase cannot be sold or moved to a broker for 45 calendar days, which is longer than a 4-week or 6-week bill lasts.
  • Quote risk. The table shows indicative quotes, not firm prices; the next auction or a broker's ask can come in above or below them.

Are Treasuries risk-free? covers the wider picture, and T-bill terms compared helps you choose among the seven terms by auction day, rollover frequency and liquidity.

Frequently asked questions

What is the 3-month T-bill rate today?+

The 3-month T-bill is the 13-week bill, so today's rate is the 13-week row of the table. Use its investment yield, not its discount rate, when you set it against a CD or savings APY.

Do T-bill rates change during the day?+

Bills trade all day in the secondary market, but Treasury publishes one official snapshot per business day, taken from quotes at about 3:30 PM Eastern. A broker's screen shows live prices that can differ from it.

Will I get today's rate if I buy a T-bill now?+

Not exactly. A bill bought at auction gets that auction's high rate, which can come in above or below today's quote. A bill bought from a broker gets the ask price when the order fills, usually a slightly lower yield than Treasury's bid-side figure.

How close are T-bill rates to the federal funds rate?+

Close. On October 30, 2026, bill investment yields ran from 3.98% for the 4-week to 4.36% for the 52-week, against a federal funds target range of 3.75% to 4.00% set two days earlier.

Why is the 52-week yield calculated differently?+

For bills longer than six months, Treasury's investment yield assumes interest compounds once at the half-year, so the 52-week figure lines up with notes and bonds that pay interest twice a year. Shorter bills use a simple annual rate.

Where can I find T-bill rates for past dates?+

Treasury's Daily Treasury Bill Rates page lets you pick any month from 2023 onward, with earlier years in its daily rate archives. The chart on this page shows monthly averages of the 3-month yield back to 2000.

Sources

  1. Daily Treasury Bill Rates, October 2026, US Department of the Treasury
  2. Interest Rate Statistics, US Department of the Treasury
  3. Interest Rates: Frequently Asked Questions, US Department of the Treasury
  4. Treasury Securities Auctions Data, US Treasury Fiscal Data
  5. Treasury Bills, TreasuryDirect (US Treasury)
  6. Buying a Treasury Marketable Security, TreasuryDirect (US Treasury)
  7. Regulation DD, Appendix A: Annual Percentage Yield Calculation, Consumer Financial Protection Bureau
  8. Consumer Price Index, US Bureau of Labor Statistics
  9. Federal Reserve issues FOMC statement, October 28, 2026, Federal Reserve Board
  10. Treasury Yield Curve Methodology, US Department of the Treasury
  11. Understanding Deposit Insurance, FDIC
  12. I bonds interest rates, TreasuryDirect (US Treasury)
  13. Selling a Treasury Marketable Security, TreasuryDirect (US Treasury)

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