Interest Rate
The interest rate on all taxes collected or administered by the Department of Revenue is 7.25%, effective July 1, 2012 through June 30, 2013. The interest rate for installment payments is 10.25%, effective July 1, 2012 through June 30, 2013.
The interest rates effective for July 1, 2011 through June 30, 2012 were also 7.25% and 10.25%.