Treasury par yield curve, month-end

Name: Treasury par yield curve, month-end
Creator: ActuarialOS
License: https://actuarialos.io/reference#terms

The U.S. Treasury daily par yield curve rates (constant maturity Treasury yields) taken at each month-end, by tenor from one month to 30 years, as decimals. These are PAR yields on the semiannual coupon-equivalent basis, not spot rates.

Current value: 0.0833 years: 0.037; 0.125 years: 0.0374; 0.1667 years: 0.0377; 0.25 years: 0.0387; 0.3333 years: 0.0392; 0.5 years: 0.0401; 1 year: 0.0398; 2 years: 0.0414; 3 years: 0.0415; 5 years: 0.0419; 7 years: 0.043; 10 years: 0.0444; 20 years: 0.0493; 30 years: 0.0491 as of 2026-06.

**Treasury par yield curve, month-end** — None — a market reference series (the base curve for a 'Treasury plus spread' discount rate). 30 rows, 2024-01 through 2026-06. Every row links to itself: `#2026-06` is the current one.
Month	0.0833 yearsrate	0.125 yearsrate	0.1667 yearsrate	0.25 yearsrate	0.3333 yearsrate	0.5 yearsrate	1 yearrate	2 yearsrate	3 yearsrate	5 yearsrate	7 yearsrate	10 yearsrate	20 yearsrate	30 yearsrate
2024-01	0.0553	—	0.0546	0.0542	0.054	0.0518	0.0473	0.0427	0.0405	0.0391	0.0395	0.0399	0.0434	0.0422
2024-02	0.0553	—	0.055	0.0545	0.0543	0.053	0.0501	0.0464	0.0443	0.0426	0.0428	0.0425	0.0451	0.0438
2024-03	0.0549	—	0.0548	0.0546	0.0542	0.0538	0.0503	0.0459	0.044	0.0421	0.042	0.042	0.0445	0.0434
2024-04	0.0548	—	0.0551	0.0546	0.0545	0.0544	0.0525	0.0504	0.0487	0.0472	0.0471	0.0469	0.049	0.0479
2024-05	0.0548	—	0.0548	0.0546	0.0546	0.0542	0.0518	0.0489	0.0469	0.0452	0.0452	0.0451	0.0473	0.0465
2024-06	0.0547	—	0.0547	0.0548	0.0545	0.0533	0.0509	0.0471	0.0452	0.0433	0.0433	0.0436	0.0461	0.0451
2024-07	0.0549	—	0.0551	0.0541	0.0532	0.0514	0.0473	0.0429	0.041	0.0397	0.04	0.0409	0.0444	0.0435
2024-08	0.0541	—	0.0532	0.0521	0.0512	0.0489	0.0438	0.0391	0.0379	0.0371	0.038	0.0391	0.0428	0.042
2024-09	0.0493	—	0.0487	0.0473	0.0465	0.0438	0.0398	0.0366	0.0358	0.0358	0.0367	0.0381	0.0419	0.0414
2024-10	0.0476	—	0.0476	0.0464	0.0456	0.0443	0.0427	0.0416	0.0412	0.0415	0.0421	0.0428	0.0458	0.0447
2024-11	0.0476	—	0.0469	0.0458	0.0452	0.0442	0.043	0.0413	0.041	0.0405	0.041	0.0418	0.0445	0.0436
2024-12	0.044	—	0.0439	0.0437	0.0432	0.0424	0.0416	0.0425	0.0427	0.0438	0.0448	0.0458	0.0486	0.0478
2025-01	0.0437	—	0.0437	0.0431	0.0433	0.0428	0.0417	0.0422	0.0427	0.0436	0.0447	0.0458	0.0488	0.0483
2025-02	0.0438	0.0437	0.0438	0.0432	0.0432	0.0425	0.0408	0.0399	0.0399	0.0403	0.0414	0.0424	0.0455	0.0451
2025-03	0.0438	0.0436	0.0435	0.0432	0.0431	0.0423	0.0403	0.0389	0.0389	0.0396	0.0409	0.0423	0.0462	0.0459
2025-04	0.0435	0.0437	0.0436	0.0431	0.0437	0.0419	0.0385	0.036	0.0358	0.0372	0.0393	0.0417	0.0468	0.0466
2025-05	0.0433	0.0435	0.0435	0.0436	0.0439	0.0436	0.0411	0.0389	0.0387	0.0396	0.0418	0.0441	0.0493	0.0492
2025-06	0.0428	0.0441	0.0445	0.0441	0.0436	0.0429	0.0396	0.0372	0.0368	0.0379	0.0398	0.0424	0.0479	0.0478
2025-07	0.0449	0.0447	0.0446	0.0441	0.044	0.0431	0.041	0.0394	0.0389	0.0396	0.0414	0.0437	0.0489	0.0489
2025-08	0.0441	0.0434	0.043	0.0423	0.0417	0.0401	0.0383	0.0359	0.0358	0.0368	0.0392	0.0423	0.0486	0.0492
2025-09	0.042	0.0419	0.0415	0.0402	0.0398	0.0383	0.0368	0.036	0.0361	0.0374	0.0393	0.0416	0.0471	0.0473
2025-10	0.0406	0.0402	0.0404	0.0389	0.0387	0.0379	0.037	0.036	0.036	0.0371	0.0389	0.0411	0.0465	0.0467
2025-11	0.0405	0.0397	0.0399	0.0388	0.0386	0.0374	0.0361	0.0347	0.0349	0.0359	0.0378	0.0402	0.0462	0.0467
2025-12	0.0374	0.0375	0.0367	0.0367	0.0363	0.0359	0.0348	0.0347	0.0355	0.0373	0.0394	0.0418	0.0479	0.0484
2026-01	0.0372	0.0373	0.0375	0.0367	0.0369	0.0361	0.0348	0.0352	0.036	0.0379	0.0401	0.0426	0.0482	0.0487
2026-02	0.0374	0.0373	0.0373	0.0367	0.0367	0.036	0.0348	0.0338	0.0339	0.0351	0.0372	0.0397	0.0457	0.0464
2026-03	0.0374	0.0373	0.0372	0.037	0.037	0.0372	0.0368	0.0379	0.0381	0.0392	0.0411	0.043	0.0488	0.0488
2026-04	0.0372	0.0371	0.0371	0.0368	0.0376	0.0371	0.0372	0.0388	0.0391	0.0402	0.042	0.044	0.0497	0.0498
2026-05	0.0372	0.0371	0.0371	0.0369	0.0378	0.0378	0.0379	0.0398	0.0406	0.0413	0.0427	0.0445	0.0498	0.0499
2026-06	0.037	0.0374	0.0377	0.0387	0.0392	0.0401	0.0398	0.0414	0.0415	0.0419	0.043	0.0444	0.0493	0.0491

Source and verification

Source: U.S. Treasury — Daily Treasury Par Yield Curve RatesTreasury Daily Par Yield Curve Rates, the last published business day of each month
Regulation: None — a market reference series (the base curve for a 'Treasury plus spread' discount rate)
Verified: July 8, 2026Against: U.S. Treasury Daily Par Yield Curve Rates — the verbatim published CSV downloads committed under data/source/daily-treasury-par-<year>.csv.How: src/__tools_buildTreasury.test.js rebuilds the canonical CSV and the module from those downloads on every suite run; the downloads were last refreshed 2026-07-08.
Publication rule: Published monthly; the source typically lags the calendar by up to 2 months. The latest period held here is 2026-06.
Download: treasury-par-yield-curve.csv treasury-par-yield-curve.json

Cite this page: ActuarialOS, “Treasury par yield curve, month-end”, https://actuarialos.io/reference/treasury-par-yield-curve — verified 2026-07-08.

In Excel: =aos_TreasuryTable(2026, 6) The ActuarialOS Excel add-in is free and returns this series with one worksheet function. Download the add-in.

In the ActuarialOS discount-rate tool this curve is the base for a Treasury-plus-spread rate; the add-in exposes it with an optional parallel spread. About the platform.

Values on this page are transcribed from the cited source and checked against it by an automated instrument; the source governs. Confirm any figure against the notice before relying on it in signed work.