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1.5-month Treasury par yield

On , Treasury's 1.5-month par yield was 4.10%, 1 basis point higher than the day before and 7 basis points lower than a year earlier.

1.5-month par yield

4.10%

+1 bp since the day before

5 October 2026 · Daily par yield curve

52-week high

4.18%

15 October 2025

52-week low

3.65%

20 May 2026

Change in a year

−7 bp

Ours, from Treasury's curve

What has the 1.5-month Treasury yield been over time?

Whole curve today

1.5-month par yield, last business day of each month

%

1.5-month par yield, last business day of each month0.0%2.0%4.0%6.0%28 Feb 202528 Nov 202530 Sep 20261.5-month par yield, last business day of each month0.0%2.0%4.0%6.0%28 Feb 202528 Nov 202530 Sep 2026

Source: U.S. Treasury, daily par yield curve rates, Daily Treasury Par Yield Curve Rates. Observed .

The numbers behind this chart
1.5-month par yield at each month-end, newest first (%)
Month-endPar yield
4.13%
3.86%
3.80%
3.74%
3.71%
3.71%
3.73%
3.73%
3.73%
3.75%
3.97%
4.02%
4.19%
4.34%
4.47%
4.41%
4.35%
4.37%
4.36%
4.37%

The last 30 business days

1.5-month par yield each business day, newest first (%)
DatePar yield
4.10%
4.09%
4.10%
4.13%
4.14%
4.14%
4.14%
4.10%
4.07%
4.04%
Show 20 more rows
1.5-month par yield each business day, newest first (%) (continued)
DatePar yield
4.02%
3.98%
3.98%
4.00%
4.00%
4.00%
3.99%
3.93%
3.88%
3.88%
3.83%
3.82%
3.87%
3.88%
3.86%
3.83%
3.79%
3.78%
3.78%
3.78%

How this is measured

The 1.5-month par yield is the coupon rate at which a new 1.5-month Treasury security would sell at par, from the curve Treasury fits each business day to closing bid prices. Month-ends are the last business day of each finished month Treasury published a value for this term; the running month shows in the last 30 days. The 52-week range and the changes in basis points are computed by 500metrics.

What this number cannot tell you
  • A fitted curve value, not the yield of one security: an outstanding note or bond of about this term trades at its own yield.
  • Month-end values hide moves inside the month; the last 30 days are shown day by day.
Sources and licence

Sources and licence

  • U.S. Treasury, daily par yield curve rates (source). Licence: Public domain, a work of the US federal government

Our text and compilation: CC BY 4.0. How to reuse and cite this page.