Medicare Regulation provides for the charging and payment of interest on overpayments and underpayments to Medicare providers. The Secretary of Treasury certifies an interest rate quarterly. Treasury utilizes the most comprehensive data available on consumer interest rates to determine the certified rate. Interest is assessed on delinquent debts in order to protect the Medicare Trust Funds.

EFFECTIVE DATE: July 20, 2015
*Unless otherwise specified, the effective date is the date of service.
IMPLEMENTATION DATE: July 20, 2015

SUBJECT: Notice of New Interest Rate for Medicare Overpayments and Underpayments – 4th Qtr Notfication for FY 2015

Background: Medicare Regulation 42 CFR section 405.378 provides for the assessment of interest at the higher of the current value of funds rate (one percent for calendar year 2015) or the private consumer rate as fixed by the Department of the Treasury.

B. Policy: The Department of the Treasury has notified the Department of Health and Human Services that the private consumer rate has been changed to 9.75 percent

Number Requirement

9288.1 The Medicare contractors shall implement an interest rate of 9.75 percent effective July 20, 2015 for Medicare overpayments and underpayments.

Period Interest Rate


February 7, 2001 – April 25, 2001 14.125%
April 26, 2001 – August 6, 2001 13.75%
August 7, 2001 – October 30, 2001 13.25%
October 31, 2001 – January 31, 2002 13.25%
February 1, 2002 – May 7, 2002 12.625%
May 8, 2002 – August 7, 2002 11.75%
August 8, 2002 – November 18, 2002 12.625%
November 19, 2002 – February 10, 2003 11.25%
February 11, 2003 – April 27, 2003 10.75%
April 28, 2003 – August 10, 2003 11.625%
August 11, 2003 – November 2, 2003 12.125%
November 3, 2003 –February 3, 2004 12.00%
February 4, 2004 – May 6, 2004 12.00%
May 7, 2004 – August 8, 2004 11.875%
August 9, 2004 – November 11, 2004 11.75%
November 12, 2004 – February 7, 2005 12.00%
February 8, 2005 – April 24, 2005 11.875%
April 25, 2005 – July 21, 2005 12.00%
July 22, 2005 – November 2, 2005 12.00%
November 3, 2005 – January 24, 2006 12.25%
January 25, 2006 – April 23, 2006 11.875%
April 24, 2006 – July 18, 2006 12.125%
July 19, 2006 – October 17, 2006 12.625%
October 18, 2006 – January 18, 2007 12.375%
January 19, 2007 – April 19, 2007 12.5%
April 20, 2007 – July 19, 2007 12.375%
July 20, 2007 – October 18, 2007 12.625%
October 19, 2007 – January 17, 2008 12.5%
January 18, 2008 – April 17, 2008 12.125%
April 18, 2008 – July 23, 2008 11.375%
July 24, 2008 – October 21, 2008 11.125%
October 22, 2008 – January 22, 2009 11.375%
January 23, 2009 – April 15, 2009 11.375%
April 16, 2009 – July 16, 2009 11.00%
July 17, 2009 – October 21, 2009 11.25%
October 22, 2009 – January 24, 2010 10.875%
January 25, 2010 – April 22, 2010 11.25%
April 23, 2010 – July 20, 2010 10.875%
July 21, 2010 – October 21, 2010 11.00%
October 22, 2010 – January 23, 2011 10.75%
January 24, 2011 – April 18, 2011 11.25%
April 19, 2011 – July 17, 2011 11.00%
July 18, 2011 — October 18, 2011 11.50%
October 19, 2011 —October 19, 2011 10.78%
October 20, 2011—-January 18, 2012 10.875%
January 19, 2012 — April 17, 2012 10.50%
April 18, 2012 — July 17, 2012 10.875%
July 18, 2012 —- October 17, 2012 11.00%
October 18, 2012 —- January 16, 2013 10.375%
January 17, 2013 — April 16, 2013 10.625%
April 17, 2013 —July 16, 2013 10.125%
July 17, 2013 —October 17, 2013 10.375%
October 18, 2013—January 20, 2014 10.125%
January 21, 2014—-April 16, 2014 10.25%
April 17, 2014—July17, 2014 10.125%
July 18, 2014 – October 19, 2014 9.625%
October 20, 2014—January 20, 2015 10.75%
January 21, 2015 —April 16, 2015 10.50%
April 17, 2015 —-July 19, 2015 9.875%
July 20, 2015 —- 9.75%