One mill is one-one-thousandth of a dollar ($0.001). Our mil rate of 31.15 would result in a tax of $31.15 per $1,000.00 of assessment for the 2021 Grand List. The total assessed tax value is multiplied by the mill rate. The assessed value is 70% of the value that is determined on the year of the revaluation (2019). The mill rate is generally set after the budget has been passed in the spring. This mill rate applies to the prior October 1 Grand List assessment. View previous mill rates (PDF) for Coventry throughout the years.