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Last Updated: 12/27/2017

Interest rates

​Year

​Interest Assessed on Unpaid Taxes

​Interest Paid

on Refunds

2018 ​4% ​4%
2017​​ 4% 4%
​2016 ​3% ​3%
2015 ​3% ​3%
​2014 ​3%
3%
2013 3% 3%
2012​ 3%​ ​3%​
​2011​ ​3% ​3%
​2010 ​3% ​3%
2009​ ​5% ​5%
​2008 ​8% ​8%