Maturities (up to 4)

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Line chart of the selected Treasury par yields for the chosen dates. The table below lists the same values.

Source: U.S. Department of the Treasury, Daily Treasury Par Yield Curve Rates. Latest observation: . Last checked: Oct 29, 2026 6:09 pm ET. How we use this data.

Using the historical rates explorer

  1. Pick a start and end date, or use the quick range buttons above the chart.
  2. Select up to four maturities to compare, from 1 month to 30 years.
  3. Select Apply to update the chart and table.
  4. Select Export CSV to download exactly the values shown, with one row per Treasury observation date.

The chart is keyboard accessible: move focus to it and use the left and right arrow keys to read values day by day (hold Shift to move ten days at a time). The table below the chart lists the same numbers, newest first.

About this data

Every value comes from the U.S. Department of the Treasury’s Daily Treasury Par Yield Curve Rates, which begin in January 1990. Rates are annual percentages on a bond-equivalent basis, one observation per business day.

  • No weekends or market holidays. The Treasury publishes rates only for business days, so those dates do not appear.
  • Blank cells are real gaps. A maturity can be missing because the Treasury had not introduced it yet or was not publishing it. Examples: the 2-month rate starts in 2018, the 4-month rate in 2022, and the 30-year rate is absent from 2002 to 2006. We leave blanks rather than estimating.
  • Revisions. If the Treasury revises a published value, our next refresh replaces the stored value with the revised one.
  • Rounding. Values are shown exactly as published, to two decimal places.

Ideas for using historical yields

  • Compare the 2-year and 10-year to see how the curve’s slope has changed through rate cycles.
  • Look at the 3-month rate over long periods to see how cash yields have tracked Federal Reserve policy.
  • Download data for spreadsheets or class projects; please cite the U.S. Department of the Treasury as the source.

To analyze the difference between two maturities over time, including periods of inversion, use the Treasury Spread Calculator.

Frequently asked questions

How far back does the data go?

To January 2, 1990, when the Treasury’s daily par yield curve series begins.

Why don’t I see a value for a particular date?

Either it was a weekend or market holiday, or the Treasury did not publish that maturity on that date.

Are these daily closing prices?

They are yields, not prices, calculated by the Treasury from end-of-day market quotations.

Can I use the downloaded data commercially?

The underlying rates are published by the U.S. government. Please review our Terms of Use and credit the U.S. Department of the Treasury as the source.