This calculator estimates the increase in the bond portion of the St. Charles CUSD 303 tax bill only. It does not include property taxes paid to other governments (e.g. city, village, park district, library, township, county, forest preserve, community college, etc.). Actual tax rates and payments may vary based on District-wide EAV growth, individual property reassessment, changes in State law, property tax rate initiatives, equalization and other factors.