September 9, 2026 · last fitted close

30 year US Treasury rate

The zero-coupon rate at this maturity, fitted from the cashflow schedules of the securities outstanding on each day.

Rate
5.309%
+2.6 bp on the day

Where it sits in 18 years

5.309% today
1.229% low · Mar 9, 20205.369% high · Aug 17, 2026

Today’s rate is higher than 99.9% of the 4,508 trading days fitted since September 2, 2008. That is a count of days, not a position on the scale above: a rate can sit near the top of its range while only a few days ever reached it.

The real 30 year yield on the same day is 3.052%, so the market is pricing roughly 2.257% of inflation compensation at this maturity. That is a price, not a forecast.

Every month since September 2, 2008

1%2%3%4%5%6%Sep 30, 2008Sep 9, 2026Sep 30, 200830 year rate4.134%Oct 31, 200830 year rate3.577%Nov 28, 200830 year rate3.148%Dec 31, 200830 year rate2.377%Jan 30, 200930 year rate3.356%Feb 27, 200930 year rate3.559%Mar 31, 200930 year rate3.535%Apr 30, 200930 year rate3.991%May 29, 200930 year rate4.366%Jun 30, 200930 year rate4.310%Jul 31, 200930 year rate4.320%Aug 31, 200930 year rate4.211%Sep 30, 200930 year rate4.067%Oct 30, 200930 year rate4.294%Nov 30, 200930 year rate4.420%Dec 31, 200930 year rate4.727%Jan 29, 201030 year rate4.664%Feb 26, 201030 year rate4.724%Mar 31, 201030 year rate4.903%Apr 30, 201030 year rate4.716%May 31, 201030 year rate4.415%Jun 30, 201030 year rate4.101%Jul 30, 201030 year rate4.217%Aug 31, 201030 year rate3.852%Sep 30, 201030 year rate4.084%Oct 29, 201030 year rate4.497%Nov 30, 201030 year rate4.481%Dec 31, 201030 year rate4.617%Jan 31, 201130 year rate4.946%Feb 28, 201130 year rate4.931%Mar 31, 201130 year rate4.838%Apr 29, 201130 year rate4.739%May 31, 201130 year rate4.558%Jun 30, 201130 year rate4.727%Jul 29, 201130 year rate4.644%Aug 31, 201130 year rate3.937%Sep 30, 201130 year rate3.069%Oct 31, 201130 year rate3.325%Nov 30, 201130 year rate3.206%Dec 30, 201130 year rate3.028%Jan 31, 201230 year rate3.081%Feb 29, 201230 year rate3.223%Mar 30, 201230 year rate3.504%Apr 30, 201230 year rate3.281%May 31, 201230 year rate2.811%Jun 29, 201230 year rate2.864%Jul 31, 201230 year rate2.667%Aug 31, 201230 year rate2.780%Sep 28, 201230 year rate2.909%Oct 31, 201230 year rate2.963%Nov 30, 201230 year rate2.908%Dec 31, 201230 year rate3.055%Jan 31, 201330 year rate3.291%Feb 28, 201330 year rate3.244%Mar 28, 201330 year rate3.269%Apr 30, 201330 year rate3.029%May 31, 201330 year rate3.474%Jun 28, 201330 year rate3.684%Jul 31, 201330 year rate3.827%Aug 30, 201330 year rate3.977%Sep 30, 201330 year rate4.022%Oct 31, 201330 year rate3.953%Nov 29, 201330 year rate4.036%Dec 31, 201330 year rate4.186%Jan 31, 201430 year rate3.875%Feb 28, 201430 year rate3.843%Mar 31, 201430 year rate3.803%Apr 30, 201430 year rate3.685%May 30, 201430 year rate3.547%Jun 30, 201430 year rate3.493%Jul 31, 201430 year rate3.421%Aug 29, 201430 year rate3.190%Sep 30, 201430 year rate3.311%Oct 31, 201430 year rate3.176%Nov 28, 201430 year rate2.995%Dec 31, 201430 year rate2.925%Jan 30, 201530 year rate2.350%Feb 27, 201530 year rate2.746%Mar 31, 201530 year rate2.704%Apr 30, 201530 year rate2.937%May 29, 201530 year rate3.121%Jun 30, 201530 year rate3.405%Jul 31, 201530 year rate3.198%Aug 31, 201530 year rate3.175%Sep 30, 201530 year rate3.077%Oct 30, 201530 year rate3.167%Nov 30, 201530 year rate3.224%Dec 31, 201530 year rate3.252%Jan 29, 201630 year rate2.995%Feb 29, 201630 year rate2.849%Mar 31, 201630 year rate2.865%Apr 29, 201630 year rate2.905%May 31, 201630 year rate2.890%Jun 30, 201630 year rate2.559%Jul 29, 201630 year rate2.419%Aug 31, 201630 year rate2.420%Sep 30, 201630 year rate2.454%Oct 31, 201630 year rate2.725%Nov 30, 201630 year rate3.257%Dec 30, 201630 year rate3.305%Jan 31, 201730 year rate3.275%Feb 28, 201730 year rate3.192%Mar 31, 201730 year rate3.272%Apr 28, 201730 year rate3.205%May 31, 201730 year rate3.091%Jun 30, 201730 year rate3.027%Jul 31, 201730 year rate3.085%Aug 31, 201730 year rate2.908%Sep 29, 201730 year rate3.030%Oct 31, 201730 year rate3.029%Nov 30, 201730 year rate2.884%Dec 29, 201730 year rate2.740%Jan 31, 201830 year rate2.935%Feb 28, 201830 year rate3.196%Mar 29, 201830 year rate2.964%Apr 30, 201830 year rate3.094%May 31, 201830 year rate2.987%Jun 29, 201830 year rate2.972%Jul 31, 201830 year rate3.094%Aug 31, 201830 year rate3.034%Sep 28, 201830 year rate3.206%Oct 31, 201830 year rate3.437%Nov 30, 201830 year rate3.354%Dec 31, 201830 year rate3.052%Jan 31, 201930 year rate3.057%Feb 28, 201930 year rate3.159%Mar 29, 201930 year rate2.939%Apr 30, 201930 year rate3.071%May 31, 201930 year rate2.709%Jun 28, 201930 year rate2.650%Jul 31, 201930 year rate2.650%Aug 30, 201930 year rate2.063%Sep 30, 201930 year rate2.226%Oct 31, 201930 year rate2.310%Nov 29, 201930 year rate2.315%Dec 31, 201930 year rate2.507%Jan 31, 202030 year rate2.140%Feb 28, 202030 year rate1.799%Mar 31, 202030 year rate1.537%Apr 30, 202030 year rate1.496%May 29, 202030 year rate1.601%Jun 30, 202030 year rate1.598%Jul 31, 202030 year rate1.342%Aug 31, 202030 year rate1.642%Sep 30, 202030 year rate1.618%Oct 30, 202030 year rate1.801%Nov 30, 202030 year rate1.715%Dec 31, 202030 year rate1.726%Jan 29, 202130 year rate2.006%Feb 26, 202130 year rate2.305%Mar 31, 202130 year rate2.553%Apr 30, 202130 year rate2.433%May 28, 202130 year rate2.424%Jun 30, 202130 year rate2.207%Jul 30, 202130 year rate2.034%Aug 31, 202130 year rate2.056%Sep 30, 202130 year rate2.222%Oct 29, 202130 year rate2.039%Nov 30, 202130 year rate1.901%Dec 31, 202130 year rate1.992%Jan 31, 202230 year rate2.082%Feb 28, 202230 year rate2.159%Mar 31, 202230 year rate2.420%Apr 29, 202230 year rate2.953%May 31, 202230 year rate3.077%Jun 30, 202230 year rate3.121%Jul 29, 202230 year rate3.108%Aug 31, 202230 year rate3.291%Sep 30, 202230 year rate3.673%Oct 31, 202230 year rate4.113%Nov 30, 202230 year rate3.932%Dec 30, 202230 year rate4.062%Jan 31, 202330 year rate3.725%Feb 28, 202330 year rate3.926%Mar 31, 202330 year rate3.797%Apr 28, 202330 year rate3.777%May 31, 202330 year rate3.945%Jun 30, 202330 year rate3.874%Jul 31, 202330 year rate4.045%Aug 31, 202330 year rate4.246%Sep 29, 202330 year rate4.745%Oct 31, 202330 year rate5.220%Nov 30, 202330 year rate4.486%Dec 29, 202330 year rate4.166%Jan 31, 202430 year rate4.389%Feb 29, 202430 year rate4.408%Mar 29, 202430 year rate4.386%Apr 30, 202430 year rate4.701%May 31, 202430 year rate4.618%Jun 28, 202430 year rate4.570%Jul 31, 202430 year rate4.492%Aug 30, 202430 year rate4.358%Sep 30, 202430 year rate4.326%Oct 31, 202430 year rate4.606%Nov 29, 202430 year rate4.429%Dec 31, 202430 year rate4.923%Jan 31, 202530 year rate4.963%Feb 28, 202530 year rate4.673%Mar 31, 202530 year rate4.762%Apr 30, 202530 year rate4.838%May 30, 202530 year rate5.043%Jun 30, 202530 year rate4.962%Jul 31, 202530 year rate5.002%Aug 29, 202530 year rate5.098%Sep 30, 202530 year rate4.921%Oct 31, 202530 year rate4.834%Nov 28, 202530 year rate4.830%Dec 31, 202530 year rate5.056%Jan 30, 202630 year rate5.116%Feb 27, 202630 year rate4.842%Mar 31, 202630 year rate4.941%Apr 30, 202630 year rate5.033%May 29, 202630 year rate5.029%Jun 30, 202630 year rate4.957%Jul 31, 202630 year rate5.274%Aug 31, 202630 year rate5.303%Sep 9, 202630 year rate5.309%

217 month ends. The high, low, mean and percentile above are computed over all 4,508 fitted days, not over these 217 points. Mean across the whole history is 3.498%.

The last 30 trading days

The 30 year US Treasury rate on each of the last 30 fitted trading days.
DateRate
Sep 9, 20265.309%
Sep 8, 20265.284%
Sep 4, 20265.276%
Sep 3, 20265.289%
Sep 2, 20265.309%
Sep 1, 20265.309%
Aug 31, 20265.303%
Aug 28, 20265.268%
Aug 27, 20265.237%
Aug 26, 20265.230%
Aug 25, 20265.224%
Aug 24, 20265.296%
Aug 21, 20265.337%
Aug 20, 20265.288%
Aug 19, 20265.252%
Aug 18, 20265.350%
Aug 17, 20265.369%
Aug 14, 20265.298%
Aug 13, 20265.253%
Aug 12, 20265.275%
Aug 11, 20265.259%
Aug 10, 20265.262%
Aug 7, 20265.209%
Aug 6, 20265.234%
Aug 5, 20265.199%
Aug 4, 20265.224%
Aug 3, 20265.253%
Jul 31, 20265.274%
Jul 30, 20265.228%
Jul 29, 20265.219%

Each date links to every family fitted on that day.

The other key rates

1 month3 month6 month1 year2 year3 year5 year7 year10 year20 year

Index levels before September 30, 2026 are back-tested. They were computed after the fact by applying the rules to historical data, which benefits from hindsight in the choice of rules, and an index cannot be invested in directly. Methodology v1.0 takes effect at that rebalance, when levels begin to be struck on the day; the rulebook is identical either way, and the version is published on every row.

A fitted curve is a fit, not a quote. Daily error averages 3.8 basis points across the history and reaches about 20 on the worst days, in December 2008, when the market was genuinely hard to fit one smooth curve to. Every curve page publishes its own fit error rather than burying it.

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Curves are fitted from public Treasury data and carry fit error; figures are not a record of trading, and an index cannot be invested in directly. No claim of compliance with the IOSCO Principles for Financial Benchmarks is made or implied. Not investment advice, not an offer, and not a recommendation to buy or sell any security.