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4-month Treasury par yield

On , Treasury's 4-month par yield was 4.27%, 1 basis point higher than the day before and 31 basis points higher than a year earlier.

4-month par yield

4.27%

+1 bp since the day before

5 October 2026 · Daily par yield curve

52-week high

4.33%

28 September 2026

52-week low

3.58%

6 January 2026

Change in a year

+31 bp

Ours, from Treasury's curve

What has the 4-month Treasury yield been over time?

Whole curve today

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

%

4-month par yield, last business day of each month0.0%2.0%4.0%6.0%31 Oct 202230 Sep 202430 Sep 20264-month par yield, last business day of each month0.0%2.0%4.0%6.0%31 Oct 202230 Sep 202430 Sep 2026

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

The numbers behind this chart
4-month par yield at each month-end, newest first (%)
Month-endPar yield
4.29%
3.96%
3.92%
3.92%
3.78%
3.76%
3.70%
3.67%
3.69%
3.63%
3.86%
3.87%
3.98%
4.17%
4.40%
4.36%
4.39%
4.37%
4.31%
4.32%
4.33%
4.32%
4.52%
4.56%
Show 24 more rows
4-month par yield at each month-end, newest first (%) (continued)
Month-endPar yield
4.65%
5.12%
5.32%
5.45%
5.46%
5.45%
5.42%
5.43%
5.40%
5.41%
5.49%
5.61%
5.61%
5.61%
5.56%
5.50%
5.53%
5.20%
4.97%
5.00%
4.74%
4.69%
4.55%
4.33%

The last 30 business days

4-month par yield each business day, newest first (%)
DatePar yield
4.27%
4.26%
4.26%
4.29%
4.30%
4.33%
4.32%
4.33%
4.30%
4.26%
Show 20 more rows
4-month par yield each business day, newest first (%) (continued)
DatePar yield
4.26%
4.24%
4.23%
4.24%
4.19%
4.18%
4.15%
4.11%
4.06%
4.02%
4.00%
3.99%
4.02%
3.97%
3.96%
3.94%
3.88%
3.88%
3.89%
3.90%

How this is measured

The 4-month par yield is the coupon rate at which a new 4-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.