Press Release - 2013 Interest Rate

October 2, 2012


Attention Business Editor

Contact: Victoria L. Daniels, Iowa Department of Revenue, 515.281.8450


DES MOINES - The Iowa Department of Revenue announces that the annual interest rate in 2013 will be 5.0 percent. The monthly interest rate will be 0.4 percent. The 2013 annual and monthly rates are the same interest rates that were set by the Department for calendar year 2012.

By statute, the Department’s 2013 interest rate is based on the average prime rate charged by banks on short-term business loans between October 2011 and September 2012. The Iowa Code requires two percentage points to be added to this average, with the final value rounded to the nearest whole percent. The prime rate was 3.25% every day in this time period, as it was during the prior year resulting in no change for the Department’s interest rate for 2013.
The Department charges interest on taxes that are overdue, including income, sales, and withholding taxes. In addition, the Department pays interest to taxpayers who file their individual income tax returns on time but do not receive their refunds by June 1. Late refunds for other taxes are paid with interest as well.

The 2013 Department annual and monthly rates are effective beginning January 1, 2013 through December 31, 2013 for taxes which are overdue and for late refunds payable during that time.