Tax deadline is near Posted on February 6, 2016 0 Hardin County Treasurer Denise Althauser reminds all property owners that real estate tax payments are due Wednesday, Feb. 10. The last day to pay the manufactured home (trailer) tax in Hardin County without penalty is Feb. 24. People with questions can contact the treasurer’s office, located on the second floor of the courthouse, or by calling 419-674-2246.