Background - Practices (Details)
CDA Interest Calculator

Under the Contract Disputes Act (CDA), interest accrues from the date the contracting officer first receives a claim. The interest rate is adjusted twice per year, and calculating interest can be time consuming. Crowell & Moring is pleased to offer this calculator to assist companies in calculating interest due to them, or in conducting pre-claim diligence and determining whether a claim is viable.

For additional information about claims generally, the application of statutory interest, or the claims and appeals processes before contracting officers, the Armed Services Board of Contract Appeals, the Civilian Board of Contract Appeals, or the Court of Federal Claims, please contact:

Steve McBrady
Nicole Owren-Wiest
Peter Eyre
David Robbins
Dan Forman

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Enter a valid dollar amount, start date, & end date.

Results: Summary

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Dates:
Principal:
Interest:
Total:
Interest-rate data are not currently available past . The last-published rate, , has been used to project estimated interest for the periods afterward.
Claim Amount ($):
Interest Start Date:
Interest End Date:
MonthDayYear

Period Breakdown

StartEndRateDaysYearFractInterest
01-Mar-1979 30-Jun-1979 9.875
01-Jul-1979 31-Dec-1979 10.250
01-Jan-1980 30-Jun-1980 12.250
01-Jul-1980 31-Dec-1980 10.500
01-Jan-1981 30-Jun-1981 14.625
01-Jul-1981 31-Dec-1981 14.875
01-Jan-1982 30-Jun-1982 14.750
01-Jul-1982 31-Dec-1982 15.500
01-Jan-1983 30-Jun-1983 11.250
01-Jul-1983 31-Dec-1983 11.500
01-Jan-1984 30-Jun-1984 12.375
01-Jul-1984 31-Dec-1984 14.375
01-Jan-1985 30-Jun-1985 12.125
01-Jul-1985 31-Dec-1985 10.375
01-Jan-1986 30-Jun-1986 9.750
01-Jul-1986 31-Dec-1986 8.500
01-Jan-1987 30-Jun-1987 7.625
01-Jul-1987 31-Dec-1987 8.875
01-Jan-1988 30-Jun-1988 9.375
01-Jul-1988 31-Dec-1988 9.250
01-Jan-1989 30-Jun-1989 9.750
01-Jul-1989 31-Dec-1989 9.125
01-Jan-1990 30-Jun-1990 8.500
01-Jul-1990 31-Dec-1990 9.000
01-Jan-1991 30-Jun-1991 8.375
01-Jul-1991 31-Dec-1991 8.500
01-Jan-1992 30-Jun-1992 6.875
01-Jul-1992 31-Dec-1992 7.000
01-Jan-1993 30-Jun-1993 6.500
01-Jul-1993 31-Dec-1993 5.625
01-Jan-1994 30-Jun-1994 5.500
01-Jul-1994 31-Dec-1994 7.000
01-Jan-1995 30-Jun-1995 8.125
01-Jul-1995 31-Dec-1995 6.375
01-Jan-1996 30-Jun-1996 5.875
01-Jul-1996 31-Dec-1996 7.000
01-Jan-1997 30-Jun-1997 6.375
01-Jul-1997 31-Dec-1997 6.750
01-Jan-1998 30-Jun-1998 6.250
01-Jul-1998 31-Dec-1998 6.000
01-Jan-1999 30-Jun-1999 5.000
01-Jul-1999 31-Dec-1999 6.500
01-Jan-2000 30-Jun-2000 6.750
01-Jul-2000 31-Dec-2000 7.250
01-Jan-2001 30-Jun-2001 6.375
01-Jul-2001 31-Dec-2001 5.875
01-Jan-2002 30-Jun-2002 5.500
01-Jul-2002 31-Dec-2002 5.250
01-Jan-2003 30-Jun-2003 4.250
01-Jul-2003 31-Dec-2003 3.125
01-Jan-2004 30-Jun-2004 4.000
01-Jul-2004 31-Dec-2004 4.500
01-Jan-2005 30-Jun-2005 4.250
01-Jul-2005 31-Dec-2005 4.500
01-Jan-2006 30-Jun-2006 5.125
01-Jul-2006 31-Dec-2006 5.750
01-Jan-2007 30-Jun-2007 5.250
01-Jul-2007 31-Dec-2007 5.750
01-Jan-2008 30-Jun-2008 4.750
01-Jul-2008 31-Dec-2008 5.125
01-Jan-2009 30-Jun-2009 5.625
01-Jul-2009 31-Dec-2009 4.875
01-Jan-2010 30-Jun-2010 3.250
01-Jul-2010 31-Dec-2010 3.125
01-Jan-2011 30-Jun-2011 2.625
01-Jul-2011 31-Dec-2011 2.500
01-Jan-2012 30-Jun-2012 2.000
01-Jul-2012 31-Dec-2012 1.750
01-Jan-2013 30-Jun-2013 1.375
01-Jul-2013 31-Dec-2013 1.750
01-Jan-2014 30-Jun-2014 2.125
01-Jul-2014 31-Dec-2014 2.000
01-Jan-2015 30-Jun-2015 2.125
01-Jul-2015 31-Dec-2015 2.375
01-Jan-2016 30-Jun-2016 2.500
01-Jul-2016 31-Dec-2016 1.875
01-Jan-2017 30-Jun-2017 2.500
01-Jul-2017 31-Dec-2017 2.375
01-Jan-2018 30-Jun-2018 2.625