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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Historical CPI-U Linked Rates
Consumer Price Index for all Urban Consumers (CPI-U)
is the measurement of inflation that the Fed uses to determine the variable rate
of the I Bond's total rate. This is also called the inflation rate of the bond.
The CPI-U value is released monthly, but the I Bond rate is only adjusted semiannually
in May and November. I Bonds purchased in November through April use the CPI-U change
from March to September. I Bonds purchased between May and October use the CPI-U
change from September of the previous year through March.
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Mean:
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1.07%
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Median:
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1.14%
|
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Highest rate:
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2.85%
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Lowest rate:
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-2.78%
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November 2018
|
1.16%
|
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May 2018
|
0.98%
|
|
November 2017
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1.11%
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May 2017
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0.98%
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November 2016
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1.38%
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May 2016
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0.08%
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November 2015
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0.77%
|
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May 2015
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-0.8%
|
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November 2014
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0.74%
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May 2014
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0.92%
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November 2013
|
0.59%
|
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May 2013
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0.59%
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November 2012
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0.88%
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May 2012
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1.10%
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November 2011
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1.53%
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May 2011
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2.30%
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November 2010
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0.37%
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May 2010
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0.77%
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November 2009
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1.53%
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May 2009
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-2.78%
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November 2008
|
2.46%
|
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May 2008
|
2.42%
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November 2007
|
1.53%
|
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May 2007
|
1.21%
|
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November 2006
|
1.55%
|
|
May 2006
|
0.50%
|
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November 2005
|
2.85%
|
|
May 2005
|
1.79%
|
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November 2004
|
1.33%
|
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May 2004
|
1.19%
|
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November 2003
|
0.54%
|
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May 2003
|
1.77%
|
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November 2002
|
1.23%
|
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May 2002
|
0.28%
|
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November 2001
|
1.19%
|
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May 2001
|
1.44%
|
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November 2000
|
1.52%
|
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May 2000
|
1.91%
|
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November 1999
|
1.76%
|
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May 1999
|
0.86%
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November 1998
|
0.86%
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September 1998
|
0.62%
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Page last modified 9/25/2011