Mercer County Treasurer David E. Wolters, right, helps Lori Rohrer, Fort Recovery, with her taxes on Friday morning inside the Mercer County Courthouse in Celina. Wolters said lines extended out the door at times this week. Taxpayers were trying to save money by prepaying their property taxes before the new federal tax bill goes into effect Jan. 1. The new tax bill limits deductions for state and local taxes on federal tax forms.