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Series I Bond Rates

Current Rates: for bonds issued Nov 1, 2023 to April 30, 2024.

Fixed Rate:
1.30%

Inflation Rate:
1.97%

Combination Rate:
5.27%

Historical Rate Chart: What have fixed and inflation rates been in the past?

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Announced DateFixed PctSemi Inflation Pct
September 1, 19983.40.62
November 1, 19983.30.86
May 1, 19993.30.86
November 1, 19993.41.76
May 1, 20003.61.91
November 1, 20003.41.52
May 1, 200131.44
November 1, 200121.19
May 1, 200220.28
November 1, 20021.61.23
May 1, 20031.11.77
November 1, 20031.10.54
May 1, 200411.19
November 1, 200411.33
May 1, 20051.21.79
November 1, 200512.85
May 1, 20061.40.5
November 1, 20061.41.55
May 1, 20071.31.21
November 1, 20071.21.53
May 1, 200802.42
November 1, 20080.72.46
May 1, 20090.1-2.78
November 1, 20090.31.53
May 1, 20100.20.77
November 1, 201000.37
May 1, 201102.3
November 1, 201101.53
May 1, 201201.1
November 1, 201200.88
May 1, 201300.59
November 1, 20130.20.59
May 1, 20140.10.92
November 1, 201400.74
May 1, 20150-0.8
November 1, 20150.10.77
May 1, 20160.10.08
November 1, 201601.38
May 1, 201700.98
November 1, 20170.11.24
May 1, 20180.31.11
November 1, 20180.51.16
May 1, 20190.50.7
November 1, 20190.21.01
May 1, 202000.53
November 1, 202000.84
May 1, 202101.77
November 1, 202103.56
May 1, 202204.81
November 1, 20220.43.24
May 1, 20230.91.69
November 1, 20231.31.97
May 1, 2024TBDTBD

Future Rate Prediction: What Rates will be Announced in the Future?

(Last Updated: Oct 31, 2023)

Timeline of Future Events

  • Oct 12, 2023 (8:30 a.m. ET)
    Final Consumer Price Index (CPI) Numbers Released
    The inflation rate portion of the Series I bound is calculated with CPI numbers. On this date, the final numbers for the 6 month period will be known, and thus we can calculate the next inflation rate.
    Example past announcement
  • Nov 1, 2023
    Fixed Rate Announced
    This is determined by the US Treasury, here is the announcement.
  • Nov 1 2023 - April 31 2024
    6 Month Buying Period
    Bonds purchased during this time period will receive the new rate. Previously purchased bonds will update their rates based on when they were originally purchased.
  • May 1 2024
    New Rate Announced, New Buying Period begins
  • Repeat

    The cycle continues!

Prediction Markets

We believe in the power of prediction markets to be a good tool for forecasting unknown future events.

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