Average interest rate
Treasury Bonds
Long-term securities maturing in 20–30 years. Because bonds are locked in for decades, their average rate changes slowly and reflects borrowing costs from years past.
Latest (Aug 2026)
3.45%
▲ +0.011 pp MoM
Year-over-year
▲ +0.142 pp
vs. Aug 2025
13-year low
3.00%
Aug 2022
13-year high
5.25%
Jan 2013
This is an average, not today's rate. For today's market yield on long bonds, see the Treasury yield curve — 5.33% on the 20-year and 5.29% on the 30-year.
Treasury Bonds — average rate history
Monthly, Jan 2013 – Aug 2026.
Download: rates-treasury-bonds.csv · CSV · public domain
Last 24 months
| Month | Avg. rate | MoM |
|---|---|---|
| Aug 2026 | 3.453% | ▲ +0.011 pp |
| Jul 2026 | 3.442% | ▲ +0.012 pp |
| Jun 2026 | 3.430% | ▲ +0.017 pp |
| May 2026 | 3.413% | ▲ +0.010 pp |
| Apr 2026 | 3.403% | ▲ +0.011 pp |
| Mar 2026 | 3.392% | ▲ +0.015 pp |
| Feb 2026 | 3.377% | ▲ +0.008 pp |
| Jan 2026 | 3.369% | ▲ +0.009 pp |
| Dec 2025 | 3.360% | ▲ +0.014 pp |
| Nov 2025 | 3.346% | ▲ +0.008 pp |
| Oct 2025 | 3.338% | ▲ +0.011 pp |
| Sep 2025 | 3.327% | ▲ +0.016 pp |
| Aug 2025 | 3.311% | ▲ +0.002 pp |
| Jul 2025 | 3.309% | ▲ +0.012 pp |
| Jun 2025 | 3.297% | ▲ +0.019 pp |
| May 2025 | 3.278% | ▲ +0.011 pp |
| Apr 2025 | 3.267% | ▲ +0.013 pp |
| Mar 2025 | 3.254% | ▲ +0.011 pp |
| Feb 2025 | 3.243% | ▲ +0.007 pp |
| Jan 2025 | 3.236% | ▲ +0.014 pp |
| Dec 2024 | 3.222% | ▲ +0.015 pp |
| Nov 2024 | 3.207% | ▲ +0.002 pp |
| Oct 2024 | 3.205% | ▲ +0.009 pp |
| Sep 2024 | 3.196% | — |