eBooks will never actually be overdue on your account, and as such, you will never be charged for them. If you are using Library Elf for notifications on your account status, it may occasionally show your eBook check outs as overdue, but this is due to a lag time between Library Elf syncing up with our catalog system. We have made them aware of the situation and hope to have it resolved soon. In the meantime, we apologize for any confusion this has caused. eBooks cannot be overdue.