{"asof": "2026-10-27", "ibond": {"period": "May 1 \u2013 Oct 31, 2026", "fixed": 0.9, "inflation": 1.67, "composite": 4.26, "next": {"date": "2026-11-01", "cpi_mar": 330.213, "cpi_sep": 336.94, "semi": 2.04, "projected_composite_same_fixed": 4.99, "fixed": null, "composite": null, "status": "pending"}, "history": [["2026-05-01", 0.9, 1.67, 4.26], ["2025-11-01", 0.9, 1.56, 4.03], ["2025-05-01", 1.1, 1.43, 3.98], ["2024-11-01", 1.2, 0.95, 3.11], ["2024-05-01", 1.3, 1.48, 4.28], ["2023-11-01", 1.3, 1.97, 5.27], ["2023-05-01", 0.9, 1.69, 4.3], ["2022-11-01", 0.4, 3.24, 6.89], ["2022-05-01", 0.0, 4.81, 9.62], ["2021-11-01", 0.0, 3.56, 7.12], ["2021-05-01", 0.0, 1.77, 3.54], ["2020-11-01", 0.0, 0.84, 1.68], ["2020-05-01", 0.0, 0.53, 1.06], ["2019-11-01", 0.2, 1.01, 2.22], ["2019-05-01", 0.5, 0.7, 1.9], ["2018-11-01", 0.5, 1.16, 2.83], ["2018-05-01", 0.3, 1.11, 2.52], ["2017-11-01", 0.1, 1.24, 2.58], ["2017-05-01", 0.0, 0.98, 1.96], ["2016-11-01", 0.0, 1.38, 2.76], ["2016-05-01", 0.1, 0.08, 0.26], ["2015-11-01", 0.1, 0.77, 1.64], ["2015-05-01", 0.0, -0.8, -1.6], ["2014-11-01", 0.0, 0.74, 1.48], ["2014-05-01", 0.1, 0.92, 1.94], ["2013-11-01", 0.2, 0.59, 1.38], ["2013-05-01", 0.0, 0.59, 1.18], ["2012-11-01", 0.0, 0.88, 1.76], ["2012-05-01", 0.0, 1.1, 2.2], ["2011-11-01", 0.0, 1.53, 3.06], ["2011-05-01", 0.0, 2.3, 4.6], ["2010-11-01", 0.0, 0.37, 0.74], ["2010-05-01", 0.2, 0.77, 1.74], ["2009-11-01", 0.3, 1.53, 3.36], ["2009-05-01", 0.1, -2.78, -5.46], ["2008-11-01", 0.7, 2.46, 5.64], ["2008-05-01", 0.0, 2.42, 4.84], ["2007-11-01", 1.2, 1.53, 4.28], ["2007-05-01", 1.3, 1.21, 3.74], ["2006-11-01", 1.4, 1.55, 4.52], ["2006-05-01", 1.4, 0.5, 2.41], ["2005-11-01", 1.0, 2.85, 6.73], ["2005-05-01", 1.2, 1.79, 4.8], ["2004-11-01", 1.0, 1.33, 3.67], ["2004-05-01", 1.0, 1.19, 3.39], ["2003-11-01", 1.1, 0.54, 2.19], ["2003-05-01", 1.1, 1.77, 4.66], ["2002-11-01", 1.6, 1.23, 4.08], ["2002-05-01", 2.0, 0.28, 2.57], ["2001-11-01", 2.0, 1.19, 4.4], ["2001-05-01", 3.0, 1.44, 5.92], ["2000-11-01", 3.4, 1.52, 6.49], ["2000-05-01", 3.6, 1.91, 7.49], ["1999-11-01", 3.4, 1.76, 6.98], ["1999-05-01", 3.3, 0.86, 5.05], ["1998-11-01", 3.3, 0.86, 5.05], ["1998-09-01", 3.4, 0.62, 4.66]], "src": [["TreasuryDirect: I bond interest rates", "https://treasurydirect.gov/savings-bonds/i-bonds/i-bonds-interest-rates/"], ["BLS CPI-U (NSA) via the BLS API", "https://data.bls.gov/timeseries/CUUR0000SA0"]]}, "curve": {"cols": ["1 Mo", "3 Mo", "6 Mo", "1 Yr", "2 Yr", "5 Yr", "10 Yr", "30 Yr"], "rows": [["2026-01-02", 3.72, 3.65, 3.58, 3.47, 3.47, 3.74, 4.19, 4.86], ["2026-01-05", 3.71, 3.64, 3.57, 3.47, 3.46, 3.71, 4.17, 4.85], ["2026-01-06", 3.7, 3.63, 3.56, 3.48, 3.47, 3.72, 4.18, 4.86], ["2026-01-07", 3.7, 3.62, 3.56, 3.48, 3.47, 3.7, 4.15, 4.82], ["2026-01-08", 3.7, 3.62, 3.56, 3.48, 3.49, 3.74, 4.19, 4.85], ["2026-01-09", 3.7, 3.62, 3.57, 3.52, 3.54, 3.75, 4.18, 4.82], ["2026-01-12", 3.71, 3.67, 3.58, 3.53, 3.54, 3.77, 4.19, 4.83], ["2026-01-13", 3.72, 3.67, 3.59, 3.51, 3.53, 3.75, 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4.1, 4.18, 4.36, 4.48], ["2026-09-28", 3.96, 4.1, 4.2, 4.42, 4.54], ["2026-09-29", 3.95, 4.08, 4.17, 4.37, 4.58], ["2026-09-30", 3.91, 4.06, 4.13, 4.34, 4.54], ["2026-10-01", 3.96, 4.06, 4.1, 4.28, 4.44], ["2026-10-02", 3.95, 4.04, 4.11, 4.29, 4.46], ["2026-10-05", 3.95, 4.05, 4.15, 4.31, 4.46], ["2026-10-06", 3.95, 4.05, 4.14, 4.3, 4.45], ["2026-10-07", 3.94, 4.06, 4.15, 4.29, 4.42], ["2026-10-08", 4.04, 4.06, 4.15, 4.31, 4.43], ["2026-10-09", 4.03, 4.05, 4.16, 4.33, 4.46], ["2026-10-13", 3.98, 4.05, 4.19, 4.35, 4.47], ["2026-10-14", 4.0, 4.06, 4.2, 4.38, 4.5], ["2026-10-15", 4.07, 4.12, 4.2, 4.36, 4.47], ["2026-10-16", 4.02, 4.1, 4.18, 4.35, 4.44], ["2026-10-19", 4.01, 4.09, 4.2, 4.38, 4.47], ["2026-10-20", 4.0, 4.08, 4.18, 4.37, 4.48], ["2026-10-21", 3.99, 4.07, 4.17, 4.36, 4.49], ["2026-10-22", 4.01, 4.09, 4.14, 4.31, 4.39], ["2026-10-23", 4.01, 4.09, 4.14, 4.32, 4.41], ["2026-10-26", 4.01, 4.1, 4.15, 4.36, 4.45], ["2026-10-27", 4.0, 4.09, 4.15, 4.36, 4.51]]}, "src_t": "https://home.treasury.gov/resource-center/data-chart-center/interest-rates/TextView?type=daily_treasury_yield_curve&field_tdr_date_value=2026"}