کد:
https://www.ovh.com/us/cloud/faq.xml :
You will be billed for resources used during the previous month between day 1 and 5 of every month. If you choose to pay monthly, you will be billed for the month that has just begun and any
additional,unpaid resources carried over from the previous month, such as instances and object storage. If you switch to monthly billing throughout the course of the month, you will be billed immediately for the amount due for the current month, calculated on a pro-rata basis.
You will be billed for instances until you delete them in the OVH Control Panel.