August 2026

The zero curve on each of 21 trading days this month.

4.00%4.25%4.50%4.75%5.00%5.25%5.50%Aug 3, 2026Aug 31, 2026Aug 3, 20262Y zero rate4.236%10Y zero rate4.719%30Y zero rate5.253%Aug 4, 20262Y zero rate4.176%10Y zero rate4.657%30Y zero rate5.224%Aug 5, 20262Y zero rate4.165%10Y zero rate4.654%30Y zero rate5.199%Aug 6, 20262Y zero rate4.226%10Y zero rate4.703%30Y zero rate5.234%Aug 7, 20262Y zero rate4.167%10Y zero rate4.675%30Y zero rate5.209%Aug 10, 20262Y zero rate4.217%10Y zero rate4.736%30Y zero rate5.262%Aug 11, 20262Y zero rate4.197%10Y zero rate4.724%30Y zero rate5.259%Aug 12, 20262Y zero rate4.177%10Y zero rate4.714%30Y zero rate5.275%Aug 13, 20262Y zero rate4.122%10Y zero rate4.668%30Y zero rate5.253%Aug 14, 20262Y zero rate4.151%10Y zero rate4.717%30Y zero rate5.298%Aug 17, 20262Y zero rate4.161%10Y zero rate4.755%30Y zero rate5.369%Aug 18, 20262Y zero rate4.160%10Y zero rate4.737%30Y zero rate5.350%Aug 19, 20262Y zero rate4.156%10Y zero rate4.664%30Y zero rate5.252%Aug 20, 20262Y zero rate4.164%10Y zero rate4.709%30Y zero rate5.288%Aug 21, 20262Y zero rate4.212%10Y zero rate4.754%30Y zero rate5.337%Aug 24, 20262Y zero rate4.219%10Y zero rate4.721%30Y zero rate5.296%Aug 25, 20262Y zero rate4.174%10Y zero rate4.652%30Y zero rate5.224%Aug 26, 20262Y zero rate4.197%10Y zero rate4.676%30Y zero rate5.230%Aug 27, 20262Y zero rate4.208%10Y zero rate4.688%30Y zero rate5.237%Aug 28, 20262Y zero rate4.328%10Y zero rate4.741%30Y zero rate5.268%Aug 31, 20262Y zero rate4.320%10Y zero rate4.767%30Y zero rate5.303%
2Y zero rate10Y zero rate30Y zero rate
Zero rate first, last, low and high for each charted tenor across August 2026.
TenorFirstLastChangeLowHigh
2Y4.236%4.320%+8.4 bp4.122%Aug 13, 20264.328%Aug 28, 2026
10Y4.719%4.767%+4.8 bp4.652%Aug 25, 20264.767%Aug 31, 2026
30Y5.253%5.303%+5.0 bp5.199%Aug 5, 20265.369%Aug 17, 2026

Rates are percent; the change column is basis points. A rise in yield is a fall in price, so the colours here describe the rate rather than a bondholder's return.

Every trading day

Zero rate at 2, 10 and 30 years for every fitted trading day in August 2026.
Date2 year10 year30 year
Aug 3, 20264.236%4.719%5.253%
Aug 4, 20264.176%4.657%5.224%
Aug 5, 20264.165%4.654%5.199%
Aug 6, 20264.226%4.703%5.234%
Aug 7, 20264.167%4.675%5.209%
Aug 10, 20264.217%4.736%5.262%
Aug 11, 20264.197%4.724%5.259%
Aug 12, 20264.177%4.714%5.275%
Aug 13, 20264.122%4.668%5.253%
Aug 14, 20264.151%4.717%5.298%
Aug 17, 20264.161%4.755%5.369%
Aug 18, 20264.160%4.737%5.350%
Aug 19, 20264.156%4.664%5.252%
Aug 20, 20264.164%4.709%5.288%
Aug 21, 20264.212%4.754%5.337%
Aug 24, 20264.219%4.721%5.296%
Aug 25, 20264.174%4.652%5.224%
Aug 26, 20264.197%4.676%5.230%
Aug 27, 20264.208%4.688%5.237%
Aug 28, 20264.328%4.741%5.268%
Aug 31, 20264.320%4.767%5.303%

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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Safe Rate™, Safe Rate Indices™ and the Safe Rate US Treasury Index™ are trademarks of Safe Rate, claimed through use in commerce and not registered. Third-party marks are the property of their owners, which are not affiliated with and do not endorse this data.

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.