Property tax bills are mailed out by the Town, Village, and City Treasurers in mid- to late-December.
Payment of the first installment or “full” payment is due to the County Treasurer by January 31st, unless you reside in the Townships of Highland or Dairyland. The first installment or “full” payment is due to the Municipal Treasurer for that Township by January 31st. All second installment payments are due by July 31st, and payable to the Douglas County Treasurer.
FYI: If you miss paying the first installment by January 31st, then the second installment option for July is lost and interest begins accruing at 1% per month on the “entire” balance due, beginning February 1st, until paid in full.