Interest Rates

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Interest Rate on County Pooled Funds

The Auditor-Controller/Treasurer-Tax Collector's invests public funds in a manner which will provide a market average rate of return consistent with the objectives of the Investment Policy while meeting the daily cash flow demands of the County Treasury, and conform to all state laws governing the investment of public funds. The following is the interest earned on the County Pooled Funds for the quarter endings noted. 

Quarter Ending Annual Percent
09-30-2018  1.985 
06-30-2018  1.875 
03-31-2018  1.821 
12-31-2017  1.703 
09-30-2017  1.645 
06-30-2017 1.560
03-31-2017 1.598
12-31-2016 1.319
09-30-2016 1.421
06-30-2016 1.355
03-31-2016 1.388
12-31-2015 1.359
09-30-2015 1.415
06-30-2015 1.394
03-31-2015 1.463
12-31-2014 1.378
09-30-2014 1.289
06-30-2014 1.293
03-31-2014 1.275
12-31-2013 1.252
09-30-2013 1.207
06-30-2013 1.207
03-31-2013 1.206
12-31-2012 1.162
09-30-2012 1.268
06-30-2012 1.383
03-31-2012 1.353
12-31-2011 1.624
09-30-2011 1.722
06-30-2011 1.436
03-31-2011 1.786
12-31-2010 2.210
09-30-2010 2.078
06-30-2010 2.118
03-31-2010 2.197
12-31-2009 2.071
09-30-2009 2.062
06-30-2009 2.302
03-31-2009 2.626
12-31-2008 2.871
09-30-2008 3.747
06-30-2008 4.067
03-31-2008 4.512
12-31-2007 4.949
09-30-2007 5.217
06-30-2007 5.268
03-31-2007 5.082
12-31-2006 4.877
09-30-2006 4.629
06-30-2006 4.138
03-31-2006 3.583
12-31-2005 3.114
09-30-2005 2.953
06-30-2005 2.720
03-31-2005 2.396
12-31-2004 2.202
09-30-2004 2.024
06-30-2004 1.862
03-31-2004 2.037
12-31-2003 2.033
09-30-2003 2.079
06-30-2003 1.945
03-31-2003 2.469

Department/agency Interest Apportionment Factor

The interest apportionment factor is to be used to determine the amount of interest a fund will receive for the Second Installment of the quarter based upon the First Installment. Add the First and Second Installment to get the total interest earned by a fund for the quarter. Use the following formula to determine the amount of the Second Installment:

  • Second Installment = Factor x Amount of First Installment
  • Factor for Quarter Ending 09-30-18: 9.9082975