Illinois Interest Rate Calculator
Illinois Interest Rates
Overview
The IRS/State Interest & Penalty Calculator supports Illinois interest rate computations for underpayments and overpayments of tax.
 |
Order The IRS/State Interest & Penalty Calculator Now! Regular Price $149. Special discounted price for orders before 3/20/2010 $129. Order licenses for additional machines. |
Illinois interest rate computations for:
Illinois has an unusual requirement for computing interest on Illinois underpayments and overpayments of tax. Initially, use the short-term rate. After 1 year, switch to the long term rate. This program has calculations for both rates.
