Archived Interest Rates (1999-1979)

Applicable Annual Quarter Annual Rate Monthly Rate

(Annual % / 365dx # days in month) 1

Monthly Rate

(Annual Rate / 12 Months)

Fourth Quarter 1999 7.94% Dec. .0068 0.0066

Nov. .0065 

Oct. .0068 

Third Quarter 1999 7.75% Sep. .0064 0.0065

Aug. .0066 

Jul. .0066 

Second Quarter 1999 7.75% Jun. .0064 0.0065

May .0066 

Apr. .0064 

First Quarter 1999 8.17% Mar. .0069 0.0068

Feb. .0063 

Jan. .0069 

Fourth Quarter 1998 8.50% Dec. .0072 0.0071

Nov. .0070 

Oct. .0072 

Third Quarter 1998 8.50% Sep. .0070 0.0071

Aug. .0072 

Jul. .0072 

Second Quarter 1998 8.50% Jun. .0070 0.0071

May .0072 

Apr. .0070 

First Quarter 1998 8.50% Mar. .0072 0.0071

Feb. .0065 

Jan. .0072 

Fourth Quarter 1997 8.50% Dec. .0072 0.0071

Nov. .0070 

Oct. .0072 

Third Quarter 1997 8.43% Sep. .0069 0.007

Aug. .0072 

Jul. .0072 

Second Quarter 1997 8.25% Jun. .0069 0.0069

May .0070 

Apr. .0068 

First Quarter 1997 8.25% Mar. .0070 0.0069

Feb. .0063 

Jan. .0070 

Fourth Quarter 1996 8.25% Dec. .0070 0.0069

Nov. .0068 

Oct. .0070 

Third Quarter 1996 8.25% Sep. .0068 0.0069

Aug. .0070 

Jul. .0070 

Second Quarter 1996 8.47% Jun. .0070 0.0071

May .0072 
Apr. .0070 

First Quarter 1996 8.75% Mar. .0074 0.0073

Feb. .0069 

Jan. .0074 

Fourth Quarter 1995 8.85% Dec. .0075 0.0074

Nov. .0073 

Oct. .0075 

Third Quarter 1995 9.00% Sep. .0074 0.0075

Aug. .0077 

Jul. .0077 

Second Quarter 1995 8.67% Jun. .0071 0.0072

May .0074 

Apr. .0071 

First Quarter 1995 7.88% Mar. .0067 0.0066

Feb. .0060 

Jan. .0067 

Fourth Quarter 1994 7.34% Dec. .0062 0.0061

Nov. .0060 

Oct. .0062 

Third Quarter 1994 6.50% Sep. .0053 0.0054

Aug. .0055 

Jul. .0055 

Second Quarter 1994 6.00% Jun. .0049 0.005

May .0051 

Apr. .0049 

First Quarter 1994 6.00% Mar. .0051 0.005

Feb. .0046 

Jan. .0051 

Fourth Quarter 1993 6.00% Dec. .0051 0.005

Nov. .0049 

Oct. .0051 

Third Quarter 1993 6.00% Sep. .0049 0.005

Aug. .0051 

Jul. .0051 

Second Quarter 1993 6.00% Jun. .0049 0.005

May .0051 

Apr. .0049 

First Quarter 1993 6.00% Mar. .0051 0.005

Feb. .0046 

Jan. .0051 

Fourth Quarter 1992 6.17% Dec. .0052 0.0051

Nov. .0051 

Oct. .0052 

Third Quarter 1992 6.50% Sep. .0053 0.0054

Aug. .0055 Jul. .0055 

Second Quarter 1992 6.74% Jun. .0056 0.0056

May .0057 

Apr. .0056 
First Quarter 1992 7.93% Mar. .0067 0.0066

Feb. .0063 

Jan. .0067 

Fourth Quarter 1991 8.50% Dec. .0072 0.0071

Nov. .0070 

Oct. .0072 

Third Quarter 1991 8.83% Sep. .0073 0.0074

Aug. .0075 

Jul. .0075 

Second Quarter 1991 9.52% Jun. .0078 0.0079

May .0081 

Apr. .0078 

First Quarter 1991 10.00% Mar. .0085 0.0083

Feb. .0077 

Jan. .0085 

Fourth Quarter 1990 10.00%Dec. .0085 0.0083

Nov. .0082 

Oct. .0085 

Third Quarter 1990 10.00% Sep. .0082 0.0083

Aug. .0085 

Jul. .0085 

Second Quarter 1990 10.20% Jun. .0084 0.0085

May .0086

Apr. .0084 

First Quarter 1990 10.50% Mar. .0089 0.0088

Feb. .0081 

Jan. .0089 

Fourth Quarter 1989 10.85% Dec. .0092 0.009

Nov. .0089 

Oct. .0092 

Third Quarter 1989 11.50% Sep. .0095 0.0096

Aug. .0098 

Jul. .0098 

Second Quarter 1989 10.64% Jun. .0088 0.0089

May .0093

Apr. .0090 

First Quarter 1989 10.02% Mar. .0093 0.0085

Feb. .0084 

Jan. .0093 

Fourth Quarter 1988 9.38% Dec. .0093 0.0078

Nov. .0090 

Oct. .0093 

Third Quarter 1988 8.61% Sep. .0060 0.0072

Aug .0062 

Jul. .0062 

Second Quarter 1988 8.67% Jun. .0060 0.0072

May. .0073

Apr. .0071 

First Quarter 1988 8.85% Mar. .0075 0.0074
Feb. .0070 

Jan. .0075 

Fourth Quarter 1987 8.25% Dec. .0070 0.0069

Nov. .0068

Oct. .0070 

Third Quarter 1987 7.80% Sep. .0064 0.0065

Aug. .0066 

Jul. .0066 

Second Quarter 1987 7.50% Jun. .0062 0.0063

May. .0064

Apr. .0062 

First Quarter 1987 7.50% Mar. .0064 0.0063

Feb. .0058 

Jan. .0064 

Fourth Quarter 1986 8.19% Dec. .0070 0.0068

Nov. .0067

Oct. .0070 

Third Quarter 1986 8.81% Jul. .0075 0.0073

Aug. .0075 

Sep. .0072 

Second Quarter 1986 9.50% Jun. .0078 0.0079

May. .0081 

Apr. .0078 

First Quarter 1986 9.50% Mar. .0081 0.0079

Feb. .0073 

Jan. .0081 

Fourth Quarter 1985 9.59% Dec. .0081 0.008

Nov. .0079 

Oct. .0081 

Third Quarter 1985 10.44% Sep. .0086 0.0087

Aug. .0089 

Jul. .0089 

Second Quarter 1985 10.72% Jun. .0088 0.0089

May. .0091 

Apr. .0088 

First Quarter 1985 12.44% Mar. .0106 0.0104

Feb. .0095 

Jan. .0106 

Fourth Quarter 1984 12.87% Dec. .0105 0.0107

Nov. .0105 

Oct. .0109 

Third Quarter 1984 11.84% Sep. .0097 0.0099

Aug. .0100 

Jul. .0100 

Second Quarter 1984 11.00% Jun. .0090 0.0092

May. .0093 

Apr. .0090 

First Quarter 1984 11.00% Mar. .0093 0.0092

Feb. .0087 
Jan. .0093 

Fourth Quarter 1983 10.63% Dec. .0090 0.0089

Nov. .0087 

Oct. .0090 

Third Quarter 1983 10.50% Sep. .0086 0.0088

Aug. .0089 

Jul. .0089 

Second Quarter 1983 11.21% Jun. .0092 0.0093

May. .0095 

Apr. .0092 

First Quarter 1983 12.62% Mar. .0107 0.0105

Feb. .0097 

Jan. .0107

Fourth Quarter 1982 15.72% Dec. .0134 0.0131

Nov. .0129 

Oct. .0134 

Third Quarter 1982 16.50% Sep. .0136 0.0138

Aug. .0140 

Jul. .0140 

Second Quarter 1982 16.02% Jun. .0132 0.0134

May. .0136 

Apr. .0132 

First Quarter 1982 18.46% Mar. .0157 0.0154

Feb. .0142 

Jan. .0157 

Fourth Quarter 1981 20.31% Dec. .0172 0.0169

Nov. .0167 

Oct. .0172 

Third Quarter 1981 18.27% Sep. .0150 0.0152

Aug. .0155 

Jul. .0155 

Second Quarter 1981 19.98% Jun. .0164 0.0167

May. .0170 

Apr. .0164

First Quarter 1981 14.03% Mar. .0119 0.0117

Feb. .0108 

Jan. .0119 

Fourth Quarter 1980 11.74% Dec. .0099 0.0098

Nov. .0096 

Oct. .0099

Third Quarter 1980 18.22% or 18.21% Sep. .0149 0.0152

Aug. .0154

Jul. .0154

Second Quarter 1980 15.39% Jun. .0126 0.0128

May. .0130 

Apr. .0126 

First Quarter 1980 14.28% Mar. .0121 0.0119

Feb. .0113 

Jan. .0121 
Fourth Quarter 1979 11.70% Dec. .0099 0.0098

Nov. .0096 

Oct. .0099 

1

 In leap years, replace 365 days with 366 days. February will be 29 days.

7% simple interest per annum prior To October 10, 1974

9% simple interest per annum October 11, 1974 through September 30, 1979

Quarterly compounding began October 1, 1979.