ARM Indexes: The Prime Rate
Source: Wall Street Journal
The prime rate is defined by The Wall Street Journal as "The base rate on corporate loans posted by at least 75% of the nation's 30 largest banks."
The prime rate does not change at regular intervals. It changes only when the nation's "largest banks" decide on the need to raise, or lower, their "base rate." In some years, the prime changed weekly. However, years may go by without a change in the prime rate.
The latest value of this index is posted in the Current Indexes table.
| Date of Change
| Prime Rate |
| 9-Jan-75 |
10.25% |
| 15-Jan-75 |
10.00 |
| 20-Jan-75 |
9.75 |
| 28-Jan-75 |
9.50 |
| 3-Feb-75 |
9.25 |
| 10-Feb-75 |
9.00 |
| 18-Feb-75 |
8.75 |
| 24-Feb-75 |
8.50 |
| 5-Mar-75 |
8.25 |
| 10-Mar-75 |
8.00 |
| 18-Mar-75 |
7.75 |
| 24-Mar-75 |
7.50 |
| 20-May-75 |
7.25 |
| 9-Jun-75 |
7.00 |
| 20-Jul-75 |
7.25 |
| 29-Jul-75 |
7.50 |
| 11-Aug-75 |
7.75 |
| 12-Sep-75 |
8.00 |
| 28-Oct-75 |
7.75 |
| 7-Nov-75 |
7.50 |
| 2-Dec-75 |
7.25 |
| 12-Jan-76 |
7.00% |
| 21-Jan-76 |
6.75 |
| 1-Jun-76 |
7.00 |
| 10-Jun-76 |
7.25 |
| 3-Aug-76 |
7.00 |
| 24-Sep-76 |
6.75 |
| 1-Nov-76 |
6.50 |
| 24-Nov-76 |
6.25 |
| 13-May-77 |
6.50% |
| 31-May-77 |
6.75 |
| 22-Aug-77 |
7.00 |
| 16-Sep-77 |
7.25 |
| 7-Oct-77 |
7.50 |
| 24-Oct-77 |
7.75 |
| 10-Jan-78 |
8.00% |
| 5-May-78 |
8.25 |
| 26-May-78 |
8.50 |
| 16-Jun-78 |
8.75 |
| 30-Jul-78 |
9.00 |
| 31-Aug-78 |
9.25 |
| 15-Sep-78 |
9.50 |
| 28-Sep-78 |
9.75 |
| 13-Oct-78 |
10.00 |
| 27-Oct-78 |
10.25 |
| 1-Nov-78 |
10.50 |
| 6-Nov-78 |
10.75 |
| 17-Nov-78 |
11.00 |
| 24-Nov-78 |
11.50 |
| 26-Dec-78 |
11.75 |
| 19-Jun-79 |
11.50% |
| 27-Jul-79 |
11.75 |
| 16-Aug-79 |
12.00 |
| 28-Aug-79 |
12.25 |
| 7-Sep-79 |
12.75 |
| 14-Sep-79 |
13.00 |
| 21-Sep-79 |
13.25 |
| 28-Sep-79 |
13.50 |
| 9-Oct-79 |
14.00 |
| 23-Oct-79 |
15.00 |
| 1-Nov-79 |
15.25 |
| 9-Nov-79 |
15.50 |
| 16-Nov-79 |
14.75 |
| 30-Nov-79 |
15.50 |
| 7-Dec-79 |
15.25 |
| 19-Feb-80 |
15.75% |
| 22-Feb-80 |
16.25 to 16.50 |
| 29-Feb-80 |
16.75 |
| 4-Mar-80 |
17.25 |
| 7-Mar-80 |
17.75 |
| 14-Mar-80 |
18.50 |
| 19-Mar-80 |
19.00 |
| 28-Mar-80 |
19.50 |
| 2-Apr-80 |
20.00 |
| 18-Apr-80 |
19.50 |
| 1-May-80 |
18.50 to 19.00 |
| 2-May-80 |
18.50 |
| 7-May-80 |
17.50 |
| 16-May-80 |
16.50 |
| 23-May-80 |
14.50 |
| 30-May-80 |
14.00 |
| 6-Jun-80 |
13.00 |
| 13-Jun-80 |
12.00 to 12.25 |
| 20-Jun-80 |
12.00 |
| 7-Jul-80 |
11.50 |
| 25-Jul-80 |
11.00 |
| 22-Aug-80 |
11.25 |
| 27-Aug-80 |
11.50 |
| 8-Sep-80 |
12.00 |
| 12-Sep-80 |
12.00 to 12.50 |
| 19-Sep-80 |
12.50 |
| 26-Sep-80 |
13.00 |
| 1-Oct-80 |
13.50 |
| 17-Oct-80 |
14.00 |
| 29-Oct-80 |
14.50 |
| 6-Nov-80 |
15.50 |
| 17-Nov-80 |
16.25 |
| 21-Nov-80 |
17.00 |
| 26-Nov-80 |
17.75 |
| 2-Dec-80 |
18.50 |
| 5-Dec-80 |
19.00 |
| 10-Dec-80 |
20.00 |
| 16-Dec-80 |
21.00 |
| 19-Dec-80 |
21.50 |
| 2-Jan-81 |
20.50% |
| 9-Jan-81 |
20.00 |
| 3-Feb-81 |
19.50 |
| 23-Feb-81 |
19.00 |
| 10-Mar-81 |
18.00 |
| 17-Mar-81 |
17.50 |
| 2-Apr-81 |
17.00 |
| 24-Apr-81 |
17.50 |
| 30-Apr-81 |
18.00 |
| 4-May-81 |
19.00 |
| 11-May-81 |
19.50 |
| 19-May-81 |
20.00 |
| 22-May-81 |
20.50 |
| 3-Jun-81 |
20.00 |
| 8-Jul-81 |
20.50 |
| 15-Sep-81 |
19.50 |
| 5-Oct-81 |
19.00 |
| 13-Oct-81 |
18.00 |
| 3-Nov-81 |
17.50 |
| 9-Nov-81 |
16.50 to 17.00 |
| 17-Nov-81 |
17.00 |
| 20-Nov-81 |
16.50 |
| 24-Nov-81 |
16.00 |
| 3-Dec-81 |
15.75 |
| 8-Feb-82 |
16.50% |
| 18-Feb-82 |
17.00 |
| 23-Feb-82 |
16.50 |
| 20-Jul-82 |
16.00 |
| 29-Jul-82 |
15.50 |
| 2-Aug-82 |
15.00 |
| 16-Aug-82 |
14.50 |
| 18-Aug-82 |
14.00 |
| 3-Sep-82 |
13.50 |
| 7-Oct-82 |
13.00 |
| 13-Oct-82 |
12.00 |
| 22-Nov-82 |
11.50 |
| 11-Jan-83 |
11.00% |
| 21-Feb-83 |
10.50 |
| 8-Aug-83 |
11.00 |
| 19-Mar-84 |
11.50% |
| 5-Apr-84 |
12.00 |
| 8-May-84 |
12.50 |
| 26-Jun-84 |
13.00 |
| 27-Sep-84 |
12.75 |
| 16-Oct-84 |
12.50 |
| 24-Oct-84 |
12.00 |
| 8-Nov-84 |
11.75 |
| 26-Nov-84 |
11.50 |
| 5-Dec-84 |
11.25 to 11.50 |
| 18-Dec-84 |
10.75 to 11.25 |
| 2-Jan-85 |
10.75% |
| 14-Jan-85 |
10.50 to 10.75 |
| 14-May-85 |
10.00 to 10.50 |
| 15-May-85 |
10.00 |
| 18-Jun-85 |
9.50 |
| 7-Mar-86 |
9.00% |
| 23-Apr-86 |
8.50 |
| 16-Jul-86 |
8.00 |
| 27-Aug-86 |
7.50 |
| 1-Apr-87 |
7.75% |
| 8-May-87 |
8.00 |
| 15-May-87 |
8.25 |
| 4-Sep-87 |
8.75 |
| 5-Oct-87 |
9.25 |
| 23-Oct-87 |
9.00 |
| 12-Nov-87 |
8.75 |
| 2-Feb-88 |
8.50% |
| 10-May-88 |
9.00 |
| 15-Jul-88 |
9.50 |
| 11-Aug-88 |
10.00 |
| 28-Nov-88 |
10.50 |
| 10-Feb-89 |
11.00% |
| 24-Feb-89 |
11.00-11.50 |
| 27-Feb-89 |
11.50 |
| 2-Jun-89 |
11.50-11.00 |
| 5-Jun-89 |
11.00 |
| 10-Jul-89 |
10.50-11.00 |
| 31-Jul-89 |
10.50 |
| 2-Jan-91 |
9.50% |
| 1-Feb-91 |
9.00-9.50 |
| 5-Feb-91 |
9.00 |
| 21-Feb-91 |
8.75-9.00 (BofA) |
| 24-Apr-91 |
9.00 |
| 1-May-91 |
8.50 |
| 13-Sep-91 |
8.00 |
| 6-Nov-91 |
7.50 |
| 23-Dec-91 |
6.50 |
| 24-Mar-94 |
6.25% |
| 19-Apr-94 |
6.75 |
| 18-May-94 |
7.25 |
| 16-Aug-94 |
7.75 |
| 15-Nov-94 |
8.50 |
| 1-Feb-95 |
9.00% |
| 7-Jul-95 |
8.75% |
| 20-Dec-95 |
8.50% |
| 30-Sep-98 |
8.25% |
| 16-Oct-98 |
8.00% |
| 01-Jul-99 |
8.00% |
| 25-Aug-99 |
8.25% |
| 17-Nov-99 |
8.50% |
| 03-Feb-00 |
8.75% |
| 22-Mar-00 |
9.00% |
| 17-May-00 |
9.50% |
| 04-Jan-01 |
9.00% |
| 01-Feb-01 |
8.50% |
| 21-Mar-01 |
8.00% |
| 19-Apr-01 |
7.50% |
| 16-May-01 |
7.00% |
| 28-Jun-01 |
6.75% |
| 22-Aug-01 |
6.50% |
| 18-Sep-01 |
6.00% |
| 03-Oct-01 |
5.50% |
| 07-Nov-01 |
5.00% |
| 12-Dec-01 |
4.75% |
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HSH Associates makes every reasonable effort to supply complete, accurate information, but assumes no liability for errors.
For the latest available value of this index, see The Latest Adjustable Rate Mortgage Indexes.
