T-Bill Rates · Treasury Bills

6-Week Treasury Bill Rates

Every 6-week bill auction since February 2025: the rate it sold at, what $10,000 cost and earned, and when the next one is.

Next auction: Tuesday, Oct 6, 2026 · size not yet announced · bidding closes 11:30 am ET, results post minutes later

Latest 6-Week Auction

Tuesday, Sep 29, 2026

6-Week Billreopening

4.044%

investment rate · +10.2 bp vs prior auction · discount rate 3.970%

$10,000 cost

$9,953.68

$99.536833 per $100

Earns at maturity

$46.32

over 42 days

Matures

Nov 12, 2026

issued Oct 1, 2026

Bid-to-cover

2.82×

$85B sold

Source: Treasury's official results announcement (PDF)

Highest on Record

4.505%

Jun 24, 2025

Lowest on Record

3.624%

Jan 6, 2026

A Year Ago

4.085%

Sep 23, 2025

Auctions Tracked

53 in the last 12 months · since February 2025

Investment rate at every auction

2Y10YAll

Every 6-week bill auction

The 26 most recent 6-Week Treasury Bill auctions
Date	Rate	Discount	Chg	Price / $100	$10,000 cost	Earns	Cover	Size	Official results
Sep 29, 2026	4.044%	3.970%	+10.2 bp	99.536833	$9,953.68	$46.32	2.82×	$85B r	PDF
Sep 22, 2026	3.942%	3.870%	+2.1 bp	99.548500	$9,954.85	$45.15	3.03×	$75B r	PDF
Sep 15, 2026	3.921%	3.850%	+11.2 bp	99.550833	$9,955.08	$44.92	3.16×	$75B r	PDF
Sep 8, 2026	3.809%	3.740%	+0.6 bp	99.563667	$9,956.37	$43.63	2.93×	$75B r	PDF
Sep 1, 2026	3.803%	3.735%	+8.6 bp	99.564250	$9,956.43	$43.57	2.85×	$85B r	PDF
Aug 25, 2026	3.717%	3.650%	+0.6 bp	99.574167	$9,957.42	$42.58	2.71×	$95B r	PDF
Aug 18, 2026	3.711%	3.645%	−2.6 bp	99.574750	$9,957.48	$42.52	2.97×	$95B r	PDF
Aug 11, 2026	3.737%	3.670%	+3.1 bp	99.571833	$9,957.18	$42.82	2.93×	$95B r	PDF
Aug 4, 2026	3.706%	3.640%	−6.2 bp	99.575333	$9,957.53	$42.47	2.93×	$95B r	PDF
Jul 28, 2026	3.768%	3.700%	+5.1 bp	99.568333	$9,956.83	$43.17	2.93×	$95B r	PDF
Jul 21, 2026	3.717%	3.650%	+1.1 bp	99.574167	$9,957.42	$42.58	2.79×	$95B r	PDF
Jul 14, 2026	3.706%	3.640%	+0.5 bp	99.575333	$9,957.53	$42.47	2.84×	$95B r	PDF
Jul 7, 2026	3.701%	3.635%	−2.1 bp	99.575917	$9,957.59	$42.41	2.74×	$90B r	PDF
Jun 30, 2026	3.722%	3.655%	+3.6 bp	99.573583	$9,957.36	$42.64	2.71×	$80B r	PDF
Jun 23, 2026	3.686%	3.620%	+2.1 bp	99.577667	$9,957.77	$42.23	2.91×	$65B r	PDF
Jun 16, 2026	3.665%	3.600%	0 bp	99.580000	$9,958.00	$42.00	3.12×	$65B r	PDF
Jun 9, 2026	3.665%	3.600%	−2.6 bp	99.580000	$9,958.00	$42.00	3.25×	$65B r	PDF
Jun 2, 2026	3.691%	3.625%	+0.5 bp	99.577083	$9,957.71	$42.29	3.28×	$75B r	PDF
May 26, 2026	3.686%	3.620%	+4.1 bp	99.577667	$9,957.77	$42.23	2.71×	$85B r	PDF
May 19, 2026	3.645%	3.580%	−3.6 bp	99.582333	$9,958.23	$41.77	3.01×	$85B r	PDF
May 12, 2026	3.681%	3.615%	+2.1 bp	99.578250	$9,957.83	$42.17	2.80×	$80B r	PDF
May 5, 2026	3.660%	3.595%	+0.5 bp	99.580583	$9,958.06	$41.94	3.07×	$75B r	PDF
Apr 28, 2026	3.655%	3.590%	−2.1 bp	99.581167	$9,958.12	$41.88	3.14×	$70B r	PDF
Apr 21, 2026	3.676%	3.610%	−2 bp	99.578833	$9,957.88	$42.12	2.88×	$70B r	PDF
Apr 14, 2026	3.696%	3.630%	+1.5 bp	99.576500	$9,957.65	$42.35	3.04×	$70B r	PDF
Apr 7, 2026	3.681%	3.615%	−3 bp	99.578250	$9,957.83	$42.17	3.57×	$70B r	PDF

Show 59 earlier auctions, back to February 2025+

Earlier 6-Week Treasury Bill auctions
Date	Rate	Discount	$10,000 cost	Cover	Size
Mar 31, 2026 r	3.711%	3.645%	$9,957.48	2.89×	$75B
Mar 24, 2026 r	3.701%	3.635%	$9,957.59	2.98×	$80B
Mar 17, 2026 r	3.701%	3.635%	$9,957.59	3.02×	$85B
Mar 10, 2026 r	3.701%	3.635%	$9,957.59	2.98×	$90B
Mar 3, 2026 r	3.706%	3.640%	$9,957.53	2.88×	$90B
Feb 24, 2026 r	3.701%	3.635%	$9,957.59	2.82×	$90B
Feb 17, 2026 r	3.706%	3.640%	$9,957.53	2.75×	$90B
Feb 10, 2026 r	3.701%	3.635%	$9,957.59	2.96×	$90B
Feb 3, 2026 r	3.706%	3.640%	$9,957.53	2.83×	$90B
Jan 27, 2026 r	3.701%	3.635%	$9,957.59	2.64×	$90B
Jan 20, 2026 r	3.696%	3.630%	$9,957.65	2.42×	$85B
Jan 13, 2026 r	3.650%	3.585%	$9,958.18	2.97×	$75B
Jan 6, 2026 r	3.624%	3.560%	$9,958.47	2.89×	$75B
Dec 30, 2025 r	3.639%	3.575%	$9,959.28	2.96×	$75B
Dec 23, 2025 r	3.645%	3.580%	$9,959.23	2.87×	$75B
Dec 16, 2025 r	3.691%	3.625%	$9,957.71	2.73×	$75B
Dec 9, 2025 r	3.717%	3.650%	$9,957.42	2.89×	$75B
Dec 2, 2025 r	3.768%	3.700%	$9,956.83	3.15×	$75B
Nov 25, 2025 r	3.921%	3.850%	$9,956.15	2.71×	$85B
Nov 18, 2025 r	3.922%	3.850%	$9,954.01	2.80×	$95B
Nov 10, 2025 r	3.962%	3.890%	$9,953.54	2.70×	$95B
Nov 4, 2025 r	3.972%	3.900%	$9,954.50	2.67×	$95B
Oct 28, 2025 r	3.952%	3.880%	$9,954.73	2.87×	$95B
Oct 21, 2025 r	4.013%	3.940%	$9,954.03	2.93×	$95B
Oct 14, 2025 r	4.085%	4.010%	$9,952.10	2.62×	$95B
Oct 7, 2025 r	4.075%	4.000%	$9,953.33	2.69×	$90B
Sep 30, 2025 r	4.095%	4.020%	$9,953.10	2.58×	$85B
Sep 23, 2025 r	4.085%	4.010%	$9,953.22	2.51×	$85B
Sep 16, 2025 r	4.116%	4.040%	$9,952.87	2.82×	$85B
Sep 9, 2025 r	4.167%	4.090%	$9,952.28	2.73×	$85B
Sep 2, 2025 r	4.269%	4.190%	$9,951.12	2.64×	$85B
Aug 26, 2025 r	4.290%	4.210%	$9,950.88	2.93×	$85B
Aug 19, 2025 r	4.325%	4.245%	$9,950.48	2.57×	$85B
Aug 12, 2025 r	4.346%	4.265%	$9,950.24	2.40×	$85B
Aug 5, 2025 r	4.382%	4.300%	$9,949.83	2.60×	$85B
Jul 29, 2025 r	4.351%	4.270%	$9,950.18	2.66×	$80B
Jul 22, 2025 r	4.341%	4.260%	$9,950.30	2.85×	$80B
Jul 15, 2025 r	4.341%	4.260%	$9,950.30	2.92×	$70B
Jul 8, 2025 r	4.346%	4.265%	$9,950.24	3.27×	$50B
Jul 1, 2025 r	4.423%	4.340%	$9,949.37	2.97×	$50B
Jun 24, 2025 r	4.505%	4.420%	$9,948.43	3.11×	$55B
Jun 17, 2025 r	4.258%	4.180%	$9,952.39	2.78×	$55B
Jun 10, 2025 r	4.274%	4.195%	$9,951.06	3.32×	$55B
Jun 3, 2025 r	4.305%	4.225%	$9,950.71	3.44×	$60B
May 27, 2025 r	4.315%	4.235%	$9,950.59	3.00×	$70B
May 20, 2025 r	4.315%	4.235%	$9,950.59	2.97×	$70B
May 13, 2025 r	4.325%	4.245%	$9,950.48	2.77×	$70B
May 6, 2025 r	4.316%	4.235%	$9,949.42	2.91×	$70B
Apr 29, 2025 r	4.310%	4.230%	$9,950.65	3.14×	$70B
Apr 22, 2025 r	4.320%	4.240%	$9,950.53	2.83×	$70B
Apr 15, 2025 r	4.325%	4.245%	$9,950.48	2.74×	$70B
Apr 8, 2025 r	4.346%	4.265%	$9,950.24	2.83×	$70B
Apr 1, 2025 r	4.325%	4.245%	$9,950.48	2.88×	$70B
Mar 25, 2025 r	4.310%	4.230%	$9,950.65	2.92×	$70B
Mar 18, 2025 r	4.315%	4.235%	$9,950.59	2.91×	$70B
Mar 11, 2025 r	4.315%	4.235%	$9,950.59	2.97×	$70B
Mar 4, 2025 r	4.320%	4.240%	$9,950.53	2.92×	$70B
Feb 25, 2025 r	4.310%	4.230%	$9,950.65	3.05×	$75B
Feb 18, 2025 r	4.351%	4.270%	$9,950.18	2.49×	$80B

Rate = investment rate (bond-equivalent yield); Discount = the same result on Treasury's 360-day discount basis. Chg = rate versus the previous auction of this bill. Price = per $100 of face value, as Treasury prints it; $10,000 cost and Earns scale it to $10,000 of face value. Cover = bid-to-cover ratio. Size = amount offered to the public. r = reopening of an existing bill. PDF = Treasury's official results.

Frequently Asked Questions

What is the current 6-week T-bill rate?

At the Sep 29, 2026 auction, the 6-week Treasury bill sold at an investment rate of 4.044% (discount rate 3.970%). $10,000 of face value cost $9,953.68 and pays $10,000 on Nov 12, 2026, earning $46.32. The investment rate is the bond-equivalent yield, the number to set beside a savings account or CD rate; the discount rate is the same result on Treasury's 360-day discount basis and is always a little lower.

When is the next 6-week T-bill auction?

The next 6-week bill auction is on Tuesday, Oct 6, 2026; the size is not announced yet. Competitive bidding closes at 11:30 am Eastern on auction day and Treasury posts the results within minutes.

How much does $10,000 of the 6-week bill cost?

At the Sep 29, 2026 auction, $10,000 of face value cost $9,953.68. It pays $10,000 on Nov 12, 2026, 42 days after issue, so the bill earns $46.32. Individuals can place a non-competitive bid through TreasuryDirect (from $100) or most brokerages (usually from $1,000), up to $10 million per auction, and receive the rate the auction sets. Interest on Treasury bills is subject to federal income tax and exempt from state and local income tax.

What was the 6-week T-bill rate a year ago?

4.085%, at the Sep 23, 2025 auction. The latest auction, on Sep 29, 2026, paid 4.044%, 4 bp lower.

What is the highest 6-week T-bill rate since 2025?

4.505%, at the Jun 24, 2025 auction. The lowest was 3.624% on Jan 6, 2026. The record on this page starts with the Feb 18, 2025 auction.

How often does Treasury auction the 6-week bill?

Treasury held 53 6-week bill auctions in the last twelve months, usually on a Tuesday. Every 6-week auction in the last twelve months reopened an existing bill, so a 6-week bill usually shares its CUSIP and maturity date with a longer bill sold earlier. The rate is set fresh at each auction either way.

Data: US Department of the Treasury (Fiscal Data and TreasuryDirect); Treasury's official results are linked on every auction. The $10,000 cost and earnings are TFTC's arithmetic from the price per $100. How to read the two rates, and how to buy at auction, is on the T-bill rates page. Full history as open JSON (CC BY 4.0). Not investment advice.