Federal Underpayment Interest Rates
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- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- Tennesee
- Texas
- Utah
- Vermont
- Virginia
- West Virginia
- Wisconsin
| Year | Qtr 1 1/01 - 3/31 | Qtr 2 4/01 - 6/30 | Qtr 3 7/01 - 9/30 | Qtr 4 10/01 - 12/31 |
|---|---|---|---|---|
| 2008 | 7% | 6% | 5% | 6% |
| 2007 | 8% | 8% | 8% | 8% |
| 2006 | 7% | 7% | 8% | 8% |
| 2005 | 5% | 6% | 6% | 7% |
| 2004 | 4% | 5% | 4% | 5% |
| 2003 | 5% | 5% | 5% | 4% |
| 2002 | 6% | 6% | 6% | 6% |
| 2001 | 9% | 8% | 7% | 7% |
| 2000 | 8% | 9% | 9% | 9% |
| 1999 | 7% | 8% | 8% | 8% |
| 1998 | 9% | 8% | 8% | 8% |
| 1997 | 9% | 9% | 9% | 9% |
| 1996 | 9% | 8% | 9% | 9% |
| 1995 | 9% | 10% | 9% | 9% |
| 1994 | 7% | 7% | 8% | 9% |
| 1993 | 7% | 7% | 7% | 7% |
| 1992 | 9% | 8% | 8% | 7% |
| 1991 | 11% | 10% | 10% | 10% |
| 1990 | 11% | 11% | 11% | 11% |
| 1989 | 11% | 12% | 12% | 11% |
| 1988 | 11% | 10% | 10% | 11% |
| 1987 | 9% | 9% | 9% | 10% |
| 1986 | 10% | 10% | 9% | 9% |
| 1985 | 13% | 13% | 11% | 11% |
| 1984 | 11% | 11% | 11% | 11% |
| 1983 | 16% | 16% | 11% | 11% |
