Good day BP friends. I have a tenant who we are offboarding at the end of March and we just thought about this... usually we charge using RUBS system. Since the tenant will be leaving at the end of March and they will be out of our electronic system to bill them in April (like we usually do), how should we handle this?

Does anyone have any experience with this? Do we let them know the water bill will be reduced from their deposit being returned? (Can we do this?) Or do we send a separate invoice along with the deposit? 

Kind of lost on this since we are new and haven't had to run into this yet...