September 21, 2026 · last fitted close

20 year US Treasury rate

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

Rate
5.393%
-4.9 bp on the day

Where it sits in 18 years

5.393% today
0.957% low · Mar 9, 20205.484% high · Sep 10, 2026

Today’s rate is higher than 99.6% of the 4,516 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 20 year yield on the same day is 3.029%, so the market is pricing roughly 2.364% 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 21, 2026Sep 30, 200820 year rate4.640%Oct 31, 200820 year rate5.007%Nov 28, 200820 year rate3.924%Dec 31, 200820 year rate3.201%Jan 30, 200920 year rate4.113%Feb 27, 200920 year rate4.224%Mar 31, 200920 year rate3.914%Apr 30, 200920 year rate4.453%May 29, 200920 year rate4.650%Jun 30, 200920 year rate4.581%Jul 31, 200920 year rate4.565%Aug 31, 200920 year rate4.409%Sep 30, 200920 year rate4.272%Oct 30, 200920 year rate4.486%Nov 30, 200920 year rate4.379%Dec 31, 200920 year rate4.868%Jan 29, 201020 year rate4.689%Feb 26, 201020 year rate4.734%Mar 31, 201020 year rate4.878%Apr 30, 201020 year rate4.665%May 31, 201020 year rate4.356%Jun 30, 201020 year rate4.049%Jul 30, 201020 year rate4.095%Aug 31, 201020 year rate3.545%Sep 30, 201020 year rate3.736%Oct 29, 201020 year rate4.072%Nov 30, 201020 year rate4.233%Dec 31, 201020 year rate4.482%Jan 31, 201120 year rate4.744%Feb 28, 201120 year rate4.603%Mar 31, 201120 year rate4.647%Apr 29, 201120 year rate4.535%May 31, 201120 year rate4.328%Jun 30, 201120 year rate4.528%Jul 29, 201120 year rate4.227%Aug 31, 201120 year rate3.656%Sep 30, 201120 year rate2.983%Oct 31, 201120 year rate3.253%Nov 30, 201120 year rate3.126%Dec 30, 201120 year rate2.938%Jan 31, 201220 year rate2.997%Feb 29, 201220 year rate3.139%Mar 30, 201220 year rate3.420%Apr 30, 201220 year rate3.159%May 31, 201220 year rate2.634%Jun 29, 201220 year rate2.766%Jul 31, 201220 year rate2.554%Aug 31, 201220 year rate2.657%Sep 28, 201220 year rate2.824%Oct 31, 201220 year rate2.836%Nov 30, 201220 year rate2.779%Dec 31, 201220 year rate2.939%Jan 31, 201320 year rate3.167%Feb 28, 201320 year rate3.119%Mar 28, 201320 year rate3.132%Apr 30, 201320 year rate2.883%May 31, 201320 year rate3.309%Jun 28, 201320 year rate3.531%Jul 31, 201320 year rate3.651%Aug 30, 201320 year rate3.711%Sep 30, 201320 year rate3.703%Oct 31, 201320 year rate3.631%Nov 29, 201320 year rate3.876%Dec 31, 201320 year rate3.996%Jan 31, 201420 year rate3.606%Feb 28, 201420 year rate3.578%Mar 31, 201420 year rate3.518%Apr 30, 201420 year rate3.413%May 30, 201420 year rate3.252%Jun 30, 201420 year rate3.284%Jul 31, 201420 year rate3.246%Aug 29, 201420 year rate3.011%Sep 30, 201420 year rate3.146%Oct 31, 201420 year rate3.003%Nov 28, 201420 year rate2.820%Dec 31, 201420 year rate2.610%Jan 30, 201520 year rate2.192%Feb 27, 201520 year rate2.518%Mar 31, 201520 year rate2.466%Apr 30, 201520 year rate2.666%May 29, 201520 year rate2.813%Jun 30, 201520 year rate3.017%Jul 31, 201520 year rate2.782%Aug 31, 201520 year rate2.851%Sep 30, 201520 year rate2.774%Oct 30, 201520 year rate2.770%Nov 30, 201520 year rate2.832%Dec 31, 201520 year rate2.851%Jan 29, 201620 year rate2.578%Feb 29, 201620 year rate2.396%Mar 31, 201620 year rate2.413%Apr 29, 201620 year rate2.460%May 31, 201620 year rate2.412%Jun 30, 201620 year rate2.045%Jul 29, 201620 year rate1.953%Aug 31, 201620 year rate2.056%Sep 30, 201620 year rate2.190%Oct 31, 201620 year rate2.464%Nov 30, 201620 year rate2.895%Dec 30, 201620 year rate2.955%Jan 31, 201720 year rate2.950%Feb 28, 201720 year rate2.859%Mar 31, 201720 year rate2.906%Apr 28, 201720 year rate2.829%May 31, 201720 year rate2.742%Jun 30, 201720 year rate2.732%Jul 31, 201720 year rate2.786%Aug 31, 201720 year rate2.594%Sep 29, 201720 year rate2.748%Oct 31, 201720 year rate2.766%Nov 30, 201720 year rate2.767%Dec 29, 201720 year rate2.672%Jan 31, 201820 year rate2.890%Feb 28, 201820 year rate3.069%Mar 29, 201820 year rate2.917%Apr 30, 201820 year rate3.061%May 31, 201820 year rate2.953%Jun 29, 201820 year rate2.944%Jul 31, 201820 year rate3.050%Aug 31, 201820 year rate2.985%Sep 28, 201820 year rate3.150%Oct 31, 201820 year rate3.351%Nov 30, 201820 year rate3.254%Dec 31, 201820 year rate2.959%Jan 31, 201920 year rate2.926%Feb 28, 201920 year rate3.031%Mar 29, 201920 year rate2.697%Apr 30, 201920 year rate2.826%May 31, 201920 year rate2.470%Jun 28, 201920 year rate2.425%Jul 31, 201920 year rate2.414%Aug 30, 201920 year rate1.859%Sep 30, 201920 year rate2.023%Oct 31, 201920 year rate2.085%Nov 29, 201920 year rate2.138%Dec 31, 201920 year rate2.327%Jan 31, 202020 year rate1.920%Feb 28, 202020 year rate1.566%Mar 31, 202020 year rate1.273%Apr 30, 202020 year rate1.157%May 29, 202020 year rate1.263%Jun 30, 202020 year rate1.259%Jul 31, 202020 year rate1.048%Aug 31, 202020 year rate1.338%Sep 30, 202020 year rate1.285%Oct 30, 202020 year rate1.470%Nov 30, 202020 year rate1.401%Dec 31, 202020 year rate1.507%Jan 29, 202120 year rate1.736%Feb 26, 202120 year rate2.117%Mar 31, 202120 year rate2.371%Apr 30, 202120 year rate2.254%May 28, 202120 year rate2.234%Jun 30, 202120 year rate2.032%Jul 30, 202120 year rate1.847%Aug 31, 202120 year rate1.864%Sep 30, 202120 year rate2.030%Oct 29, 202120 year rate1.948%Nov 30, 202120 year rate1.806%Dec 31, 202120 year rate1.922%Jan 31, 202220 year rate2.192%Feb 28, 202220 year rate2.299%Mar 31, 202220 year rate2.587%Apr 29, 202220 year rate3.139%May 31, 202220 year rate3.311%Jun 30, 202220 year rate3.376%Jul 29, 202220 year rate3.202%Aug 31, 202220 year rate3.522%Sep 30, 202220 year rate4.069%Oct 31, 202220 year rate4.471%Nov 30, 202220 year rate3.973%Dec 30, 202220 year rate4.096%Jan 31, 202320 year rate3.730%Feb 28, 202320 year rate4.039%Mar 31, 202320 year rate3.744%Apr 28, 202320 year rate3.732%May 31, 202320 year rate3.945%Jun 30, 202320 year rate3.952%Jul 31, 202320 year rate4.133%Aug 31, 202320 year rate4.315%Sep 29, 202320 year rate4.887%Oct 31, 202320 year rate5.156%Nov 30, 202320 year rate4.727%Dec 29, 202320 year rate4.147%Jan 31, 202420 year rate4.314%Feb 29, 202420 year rate4.488%Mar 29, 202420 year rate4.425%Apr 30, 202420 year rate4.886%May 31, 202420 year rate4.721%Jun 28, 202420 year rate4.578%Jul 31, 202420 year rate4.420%Aug 30, 202420 year rate4.284%Sep 30, 202420 year rate4.202%Oct 31, 202420 year rate4.542%Nov 29, 202420 year rate4.475%Dec 31, 202420 year rate4.863%Jan 31, 202520 year rate4.889%Feb 28, 202520 year rate4.580%Mar 31, 202520 year rate4.659%Apr 30, 202520 year rate4.781%May 30, 202520 year rate5.059%Jun 30, 202520 year rate4.889%Jul 31, 202520 year rate4.990%Aug 29, 202520 year rate5.031%Sep 30, 202520 year rate4.807%Oct 31, 202520 year rate4.745%Nov 28, 202520 year rate4.764%Dec 31, 202520 year rate4.933%Jan 30, 202620 year rate4.937%Feb 27, 202620 year rate4.707%Mar 31, 202620 year rate5.027%Apr 30, 202620 year rate5.129%May 29, 202620 year rate5.126%Jun 30, 202620 year rate5.035%Jul 31, 202620 year rate5.434%Aug 31, 202620 year rate5.360%Sep 21, 202620 year rate5.393%

217 month ends. The high, low, mean and percentile above are computed over all 4,516 fitted days, not over these 217 points. Mean across the whole history is 3.399%.

The last 30 trading days

The 20 year US Treasury rate on each of the last 30 fitted trading days.
DateRate
Sep 21, 20265.393%
Sep 18, 20265.443%
Sep 17, 20265.390%
Sep 16, 20265.465%
Sep 15, 20265.482%
Sep 14, 20265.462%
Sep 11, 20265.470%
Sep 10, 20265.484%
Sep 9, 20265.387%
Sep 8, 20265.367%
Sep 4, 20265.357%
Sep 3, 20265.362%
Sep 2, 20265.384%
Sep 1, 20265.383%
Aug 31, 20265.360%
Aug 28, 20265.326%
Aug 27, 20265.315%
Aug 26, 20265.305%
Aug 25, 20265.294%
Aug 24, 20265.346%
Aug 21, 20265.400%
Aug 20, 20265.358%
Aug 19, 20265.325%
Aug 18, 20265.437%
Aug 17, 20265.467%
Aug 14, 20265.413%
Aug 13, 20265.364%
Aug 12, 20265.402%
Aug 11, 20265.400%
Aug 10, 20265.408%

Each date links to every family fitted on that day.

The other key rates

1 month3 month6 month1 year2 year3 year5 year7 year10 year30 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.