You can prepay at any time at tap.utah. Tax Payment Due Date.This must be filled out and submitted no later than 3 p.m. On the business day before the scheduled payment due date. Enter the day of the month you want your payments to be due (example, "5th day" of each –––––– month). Last day to pay current year property taxes without a penalty. If the 30th lands on a holiday or weekend the due date is extended to the next business day. Tuition Payment Plan lets you spread your tuition and fees over four monthly payments for fall and spring semesters, and three payments for the summer semester. Your registration has been received. Please check your email () and click on the link for Salt Lake City Public Utilities online registration to activate.