The semi-annual CPI-U rate dropped from 238.031 to 236.119, resulting in a negative variable rate for this period. The resulting variable rate will be 0.00 since bonds can...
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I Bond Rate Summary
This table represents the data used to determine an I Bond's inital rate.
Composite Rate = Fixed rate + 2 * CPI-U Rate +
(Fixed rate * CPI-U Rate)
| 11/1/2019 |
0.20
|
1.01
|
0.2020
|
2.02
|
2.0220200
|
2.2220200
|
2.23%
|
| 5/1/2019 |
0.50
|
0.70
|
0.3500
|
1.40
|
1.403500
|
1.903500
|
1.90%
|
| 11/1/2018 |
0.50
|
1.16
|
0.5800
|
2.32
|
2.325800
|
2.825800
|
2.83%
|
| 5/1/2018 |
0.00
|
0.98
|
0.0000
|
1.96
|
1.960000
|
1.960000
|
1.96%
|
| 11/1/2017 |
0.30
|
1.11
|
0.3330
|
2.22
|
2.2233300
|
2.5233300
|
2.52%
|
| 5/1/2017 |
0.00
|
0.98
|
0.0000
|
1.96
|
1.960000
|
1.960000
|
1.96%
|
| 11/1/2016 |
0.0
|
1.38
|
0.000
|
2.76
|
2.76000
|
2.76000
|
2.76%
|
| 5/1/2016 |
0.10
|
0.08
|
0.0080
|
0.16
|
0.1600800
|
0.2600800
|
0.26%
|
| 11/1/2015 |
0.10
|
0.77
|
0.0770
|
1.54
|
1.5407700
|
1.6407700
|
1.64%
|
| 5/1/2015 |
0.00
|
-0.8
|
0.000
|
-1.6
|
-1.60000
|
-1.60000
|
0.00%
|
| 11/1/2014 |
0.00
|
0.74
|
0.0000
|
1.48
|
1.480000
|
1.480000
|
1.48%
|
| 5/1/2014 |
0.10
|
0.92
|
0.0920
|
1.84
|
1.8409200
|
1.9409200
|
1.94%
|
| 11/1/2013 |
0.20
|
0.59
|
0.1180
|
1.18
|
1.1811800
|
1.3811800
|
1.38%
|
| 5/1/2013 |
0.00
|
0.59
|
0.0000
|
1.18
|
1.180000
|
1.180000
|
1.18%
|
| 11/1/2012 |
0.00
|
0.88
|
0.0000
|
1.76
|
1.760000
|
1.760000
|
1.76%
|
| 5/1/2012 |
0.00
|
1.10
|
0.0000
|
2.20
|
2.20000
|
2.20000
|
2.20%
|
| 11/1/2011 |
0.00
|
1.53
|
0.0000
|
3.06
|
3.060000
|
3.060000
|
3.06%
|
| 5/1/2011 |
0.00
|
2.30
|
0.0000
|
4.60
|
4.60000
|
4.60000
|
4.60%
|
| 11/1/2010 |
0.00
|
0.37
|
0.0000
|
0.74
|
0.740000
|
0.740000
|
0.74%
|
| 5/1/2010 |
0.20
|
0.77
|
0.1540
|
1.54
|
1.5415400
|
1.7415400
|
1.74%
|
| 11/1/2009 |
0.30
|
1.53
|
0.4590
|
3.06
|
3.0645900
|
3.3645900
|
3.36%
|
| 5/1/2009 |
0.10
|
-2.78
|
-0.2780
|
-5.56
|
-5.5627800
|
-5.4627800
|
0.00%
|
| 11/1/2008 |
0.70
|
2.46
|
1.7220
|
4.92
|
4.9372200
|
5.6372200
|
5.64%
|
| 5/1/2008 |
0.00
|
2.42
|
0.0000
|
4.84
|
4.840000
|
4.840000
|
4.84%
|
| 11/1/2007 |
1.20
|
1.53
|
1.8360
|
3.06
|
3.0783600
|
4.2783600
|
4.28%
|
| 5/1/2007 |
1.30
|
1.21
|
1.5730
|
2.42
|
2.4357300
|
3.7357300
|
3.74%
|
| 11/1/2006 |
1.40
|
1.55
|
2.1700
|
3.10
|
3.121700
|
4.521700
|
4.52%
|
| 5/1/2006 |
1.40
|
0.50
|
0.7000
|
1.00
|
1.00700
|
2.40700
|
2.41%
|
| 11/1/2005 |
1.00
|
2.85
|
2.8500
|
5.70
|
5.728500
|
6.728500
|
6.73%
|
| 5/1/2005 |
1.20
|
1.79
|
2.1480
|
3.58
|
3.6014800
|
4.8014800
|
4.80%
|
| 11/1/2004 |
1.00
|
1.33
|
1.3300
|
2.66
|
2.673300
|
3.673300
|
3.67%
|
| 5/1/2004 |
1.00
|
1.19
|
1.1900
|
2.38
|
2.391900
|
3.391900
|
3.39%
|
| 11/1/2003 |
1.10
|
0.54
|
0.5940
|
1.08
|
1.0859400
|
2.1859400
|
2.19%
|
| 5/1/2003 |
1.10
|
1.77
|
1.9470
|
3.54
|
3.5594700
|
4.6594700
|
4.66%
|
| 11/1/2002 |
1.60
|
1.23
|
1.9680
|
2.46
|
2.4796800
|
4.0796800
|
4.08%
|
| 5/1/2002 |
2.00
|
0.28
|
0.5600
|
0.56
|
0.565600
|
2.565600
|
2.57%
|
| 11/1/2001 |
2.00
|
1.19
|
2.3800
|
2.38
|
2.403800
|
4.403800
|
4.40%
|
| 5/1/2001 |
3.00
|
1.44
|
4.3200
|
2.88
|
2.923200
|
5.923200
|
5.92%
|
| 11/1/2000 |
3.40
|
1.52
|
5.1680
|
3.04
|
3.0916800
|
6.4916800
|
6.49%
|
| 5/1/2000 |
3.60
|
1.91
|
6.8760
|
3.82
|
3.8887600
|
7.4887600
|
7.49%
|
| 11/1/1999 |
3.40
|
1.76
|
5.9840
|
3.52
|
3.5798400
|
6.9798400
|
6.98%
|
| 5/1/1999 |
3.30
|
0.86
|
2.8380
|
1.72
|
1.7483800
|
5.0483800
|
5.05%
|
| 11/1/1998 |
3.30
|
0.86
|
2.8380
|
1.72
|
1.7483800
|
5.0483800
|
5.05%
|
| 9/1/1998 |
3.40
|
0.62
|
2.1080
|
1.24
|
1.2610800
|
4.6610800
|
4.66%
|
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Page last modified 9/25/2011