As a property owner and under Iowa law, it is your responsibility to make sure that you receive a bill and that it is paid on time. The statements are mailed and the taxes are due at the same time each year.  

Late interest accrues on the first day of each month if a tax payment is not paid before the due date. The interest accrues at the rate of 1.5% per month (rounded to the nearest dollar) with a minimum of one dollar. Late interest is added to the unpaid balance of your property taxes.

When the last day of the month is a Saturday, Sunday, or a holiday, the deadline for remitting tax payments without late interest or additional late interest for delinquent installments is extended to include the first business day of the following month.

Taxes that remain unpaid could be subject to tax sale. Once the taxes are sold at tax sale, they are paid by another party. A tax lien is then placed on the property and if it is not redeemed within the time specified by Iowa law, the tax sale certificate holder may initiate proceedings to obtain a tax deed on the property.

Property tax payments are due in two installments.  The 1st installment is due September 1st with late interest charged beginning October 1st.  The 2nd installment is due March 1st with late interest charged beginning April 1st.