Special-issue interest rates on new
investments (percent)
Month
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
January
6.625
5.375
5.250
4.000
4.250
4.250
4.500
4.750
4.000
2.125
February
6.750
5.375
5.250
4.125
4.125
4.125
4.625
4.875
3.500
2.750
March
6.500
5.250
5.125
3.875
4.000
4.375
4.625
4.625
3.375
2.875
April
6.250
5.250
5.625
4.000
3.875
4.500
5.000
4.750
3.375
2.500
May
6.375
5.500
5.250
4.000
4.500
4.250
5.125
4.625
3.750
2.875
June
6.500
5.625
5.250
3.500
4.625
4.125
5.125
5.000
4.000
3.250
July
6.250
5.625
5.000
3.625
4.625
4.000
5.250
5.000
3.875
3.250
August
6.125
5.250
4.750
4.500
4.500
4.375
5.000
4.750
3.875
3.250
September
6.000
5.125
4.375
4.500
4.125
4.125
4.750
4.500
3.750
3.125
October
6.000
4.875
3.875
4.000
4.125
4.375
4.750
4.500
3.625
3.000
November
5.875
4.500
4.125
4.375
4.125
4.625
4.625
4.500
3.750
3.125
December
5.625
5.000
4.500
4.375
4.375
4.625
4.500
4.000
2.750
2.875
Average
6.240
5.229
4.865
4.073
4.271
4.313
4.823
4.656
3.635
2.917
Month
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
January
3.500
2.875
1.500
1.500
2.500
2.125
2.250
2.375
2.375
2.750
February
3.125
2.875
1.500
1.625
2.250
1.625
1.875
2.375
2.750
2.625
March
3.125
3.000
1.625
1.500
2.250
1.875
1.750
2.375
2.875
2.750
April
3.375
3.000
1.875
1.500
2.375
1.875
1.750
2.375
2.750
2.500
May
3.250
2.875
1.625
1.375
2.375
2.000
1.750
2.250
2.875
2.500
June
2.875
2.500
1.375
1.750
2.250
2.000
1.875
2.250
2.875
2.250
July
2.625
2.625
1.375
2.125
2.250
2.250
1.500
2.250
2.875
2.125
August
2.500
2.250
1.250
2.125
2.375
2.125
1.500
2.250
3.000
2.125
September
2.125
1.875
1.250
2.375
2.125
2.125
1.625
2.250
2.875
1.625
October
2.125
1.625
1.375
2.250
2.375
2.000
1.625
2.250
3.000
1.750
November
2.125
1.750
1.375
2.125
2.125
2.125
1.875
2.375
3.125
1.750
December
2.375
1.750
1.375
2.250
2.000
2.125
2.375
2.375
3.000
1.875
Average
2.760
2.417
1.458
1.875
2.271
2.021
1.813
2.313
2.865
2.219
Month
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
January
2.000
0.875
1.625
4.000
4.000
4.625
February
1.625
1.125
1.875
3.625
4.125
4.625
March
1.250
1.375
2.000
4.125
4.375
4.250
April
0.875
1.625
2.500
3.625
4.250
4.250
May
0.750
1.500
3.000
3.625
4.750
4.250
June
0.750
1.500
3.000
3.875
4.625
4.500
July
0.750
1.500
3.125
4.000
4.500
August
0.625
1.250
2.875
4.125
4.125
September
0.750
1.375
3.375
4.250
4.000
October
0.750
1.500
4.000
4.750
3.875
November
0.875
1.625
4.250
5.000
4.375
December
0.875
1.500
3.875
4.500
4.250
Average
0.990
1.396
2.958
4.125
4.271
NA
NA
NA
NA
NA
Note: The current formula
for determining special-issue interest rates became effective with the
October 1960 rate. Under this formula, the highest interest rate is
15.250 percent (Oct 1981) and the lowest rate is 0.625 percent (Aug 2020). See table for
1937-1999 interest rates.