In accordance with 42 CFR Section 405.378 simple interest is assessed on outstanding Medicare overpayments. Interest is calculated in 30-day periods and is assessed for each full 30-day period that payment is not made in full. The interest rate assessed on overpayments is the prevailing rate specified by the Secretary of the Treasury and is the rate effective on the initial demand letter date. 

Below we have listed the current and past overpayment interest rates:

Period from
Period To
Rate %

 January 17, 2019

 

10.75

 October 17, 2018

 January 16, 2019

 10.125

 April 17, 2018

 October 16, 2018

 10.25

 January 19, 2018

 April 16, 2018

 10.625

October 18, 2017
 January 18, 2018
9.750

 July 18, 2017

October 17, 2017 

 10.125

 April 18, 2017

July 17, 2017

 10.000

January 19, 2017

 April 17, 2017

 9.500

July 18, 2016
 January 18, 2017
9.625
April 19, 2016
July 17, 2016
10.000
January 19, 2016
April 18, 2016
9.750
October 20, 2015
January 18, 2016
10.000
July 20, 2015
October 19, 2015
9.750
April 17, 2015
July 19, 2015
9.875
January 21, 2015
April 16, 2015
10.500
October 20, 2014
January 20, 2015
10.750
July 18, 2014
October 19, 2014
9.625
April 17, 2014
July 17, 2014
10.125
January 21, 2014
April 16, 2014
10.250
October 18, 2013
January 20, 2014
10.125
July 17, 2013
October 17, 2013
10.375
April 17, 2013
July 16, 2013
10.125
January 17, 2013
April 16, 2013
10.625
October 18, 2012
January 16, 2013
10.375
July 18, 2012
October 17, 2012
11.000
April 18, 2012
July 17, 2012
10.875
January 19, 2012
April 17, 2012
10.500
October 20, 2011
January 18, 2012
10.875
October 19, 2011
October 19, 2011
10.780
July 18, 2011
October 18, 2011
11.500
April 19, 2011
July 17, 2011
11.000
January 24, 2011
April 18, 2011
11.250
October 22, 2010
January 23, 2011
10.750
July 21, 2010
October 21, 2010
11.000
April 23, 2010
July 20, 2010
10.875
January 25, 2010
April 22, 2010
11.250
October 22, 2009
January 24, 2010
10.875
July 17, 2009
October 21, 2009
11.250
April 16, 2009
July 16, 2009
11.000
October 22, 2008
April 15, 2009
11.375
July 24, 2008
October 21, 2008
11.125
April 18, 2008
July 23, 2008
11.375
January 18, 2008
April 17, 2008
12.125
October 19, 2007
January 17, 2008
12.500
July 20, 2007
October 18, 2007
12.625
April 20, 2007
July 19, 2007
12.375
January 19, 2007
April 19, 2007
12.500
October 18, 2006
January 18, 2007
12.375
July 19, 2006
October 17, 2006
12.625
April 24, 2006
July 18, 2006
12.125
January 25, 2006
April 23, 2006
11.875
November 3, 2005
January 24, 2006
12.250
July 22, 2005
November 2, 2005
12.000
April 25, 2005
July 21, 2005
12.000
February 8, 2005
April 24, 2005
11.875
November 12, 2004
February 7, 2005
12.000
August 9, 2004
November 11, 2004
11.750
May 7, 2004
August 8, 2004
11.875
February 4, 2004
May 6, 2004
12.000
November 3, 2003
February 3, 2004
12.000
August 11, 2003
November 2, 2003
12.125
April 28, 2003
August 10, 2003
11.625
February 11, 2003
April 27, 2003
10.750
November 19, 2002
February 10, 2003
11.250
August 8, 2002
November 18, 2002
12.625
May 8, 2002
August 7, 2002
11.750
February 1, 2002
May 7, 2002
12.625
August 7, 2001
January 31, 2002
13.250
April 26, 2001
August 6, 2001
13.750
February 7, 2001
April 25, 2001
14.125
August 1, 2000
February 6, 2001
13.875
May 3, 2000
July 31, 2000
13.750
February 2, 2000
May 2, 2000
13.500
October 28, 1999
February 1, 2000
13.375
 

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