Copies of the Town of Eagle tax bills are posted to Waukesha County’s website as of Monday, December 12, 2016. Taxes were due January 31, 2017. Payments received or postmarked after January 31, 2017 will be delinquent and subject to interest and penalty charge. After January 31, 2017, delinquencies are due to the Waukesha County Treasurer, 515 W. Moreland Blvd, Room AC 148, Waukesha WI 53188. The second installment of your taxes are also due to the Waukesha County Treasurer.