26-Week Treasury Bill (coupon-equivalent)
The 26-Week Treasury Bill (coupon-equivalent) was 4.21% on 2026-09-15, per U.S. Department of the Treasury.
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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 |
|---|---|---|
| 4.21% | 0 bp | |
| 4.21% | +5 bp | |
| 4.16% | +5 bp | |
| 4.11% | +8 bp | |
| 4.03% | 0 bp | |
| 4.03% | +2 bp | |
| 4.01% | +2 bp | |
| 3.99% | -4 bp | |
| 4.03% | 0 bp | |
| 4.03% | +1 bp | |
| 4.02% | +4 bp | |
| 3.98% | +7 bp | |
| 3.91% | 0 bp | |
| 3.91% | -1 bp | |
| 3.92% | -1 bp | |
| 3.93% | +1 bp | |
| 3.92% | +1 bp | |
| 3.91% | 0 bp | |
| 3.91% | 0 bp | |
| 3.91% | -1 bp | |
| 3.92% | 0 bp | |
| 3.92% | +1 bp | |
| 3.91% | -2 bp | |
| 3.93% | -3 bp | |
| 3.96% | -1 bp | |
| 3.97% | +4 bp | |
| 3.93% | -3 bp | |
| 3.96% | +1 bp | |
| 3.95% | -1 bp | |
| 3.96% | -3 bp | |
| 3.99% | +4 bp | |
| 3.95% | 0 bp | |
| 3.95% | +1 bp | |
| 3.94% | -9 bp | |
| 4.03% | -5 bp | |
| 4.08% | +4 bp | |
| 4.04% | -1 bp | |
| 4.05% | +4 bp | |
| 4.01% | +2 bp | |
| 3.99% | +2 bp | |
| 3.97% | +5 bp | |
| 3.92% | +1 bp | |
| 3.91% | +1 bp | |
| 3.90% | -2 bp | |
| 3.92% | -8 bp | |
| 4.00% | +4 bp | |
| 3.96% | +4 bp | |
| 3.92% | -4 bp | |
| 3.96% | 0 bp | |
| 3.96% | +1 bp | |
| 3.95% | +1 bp | |
| 3.94% | -3 bp | |
| 3.97% | -1 bp | |
| 3.98% | +1 bp | |
| 3.97% | +4 bp | |
| 3.93% | -1 bp | |
| 3.94% | 0 bp | |
| 3.94% | -1 bp | |
| 3.95% | -2 bp | |
| 3.97% | — |
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
- 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.