Estimated bills are labeled as such, and directions are given for providing an updated amount. Also, since they tell you what the charge per unit is, there's nothing to stop you from doing the math yourself and sending more than the estimate in anticipation of the estimate being wrong.
Estimated bills are labeled as such, and directions are given for providing an updated amount. Also, since they tell you what the charge per unit is, there's nothing to stop you from doing the math yourself and sending more than the estimate in anticipation of the estimate being wrong.