13-Week Treasury Bill (coupon-equivalent)

The 13-Week Treasury Bill (coupon-equivalent) was 4.07% on 2026-09-15, per U.S. Department of the Treasury.

Latest 4.07%
Change vs previous 0 bp
As of Source cadence: every business day, published ~3:30pm ET (U.S. Treasury) · schedule ↗
Unit Percent

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Source: U.S. Department of the Treasury · Source data · As of · 6,180 observations

Recent observations

The most recent 60 observations, newest first. Change is against the previous published observation, not the previous calendar day — the series is only published on days the source publishes it.

Date Value Change
4.07% 0 bp
4.07% +6 bp
4.01% +6 bp
3.95% +5 bp
3.90% +1 bp
3.89% +3 bp
3.86% +2 bp
3.84% -3 bp
3.87% 0 bp
3.87% 0 bp
3.87% +4 bp
3.83% +5 bp
3.78% -1 bp
3.79% -1 bp
3.80% -1 bp
3.81% 0 bp
3.81% +1 bp
3.80% 0 bp
3.80% 0 bp
3.80% -1 bp
3.81% +1 bp
3.80% 0 bp
3.80% -1 bp
3.81% -2 bp
3.83% 0 bp
3.83% +2 bp
3.81% -2 bp
3.83% 0 bp
3.83% 0 bp
3.83% -1 bp
3.84% +7 bp
3.77% -1 bp
3.78% -1 bp
3.79% -7 bp
3.86% -5 bp
3.91% +1 bp
3.90% 0 bp
3.90% +6 bp
3.84% +1 bp
3.83% +1 bp
3.82% +2 bp
3.80% +1 bp
3.79% 0 bp
3.79% -1 bp
3.80% -5 bp
3.85% +5 bp
3.80% +2 bp
3.78% -4 bp
3.82% 0 bp
3.82% -1 bp
3.83% +7 bp
3.76% -4 bp
3.80% -3 bp
3.83% 0 bp
3.83% +8 bp
3.75% -3 bp
3.78% -1 bp
3.79% 0 bp
3.79% 0 bp
3.79% —

Source: U.S. Department of the Treasury · As of · Showing 60 of 6,180 observations; the chart above plots the full history.

Methodology

Treasury bill rates are the secondary-market coupon-equivalent yields at the close, as published by the Treasury. The coupon-equivalent yield restates the bill's discount rate on a bond-yield basis so it can be compared directly with a coupon Treasury of the same maturity.

Attribution & licence
Attribution
Source: U.S. Department of the Treasury
Originator
U.S. Department of the Treasury
Licence
Public domain
Why
A work of the U.S. federal government: not subject to domestic copyright (17 U.S.C. §105), free to republish.