Hello @Shivi Bhatia ,
Welcome to the Microsoft Q&A forum.
Please review below how charges are implemented for some Azure Resources.
You are not billed for the VM while it in the deallocated power state. However, some Azure resources, such as Disks and Networking will continue to incur charges.
Premium SSD: The total cost of Premium SSD Managed Disks depends on the size and number of the disks, and will be affected by the number of outbound data transfers.
Snapshots: You can store full snapshots and images for Premium SSD Managed Disks on Standard storage. You can choose between locally redundant (LRS) and zone redundant (ZRS) snapshot options. These snapshots and images are charged at $0.05/GB per month for both Standard LRS and ZRS options based on the used portion of the disk.
Please also keep in mind, if you changed a performance tier on a disk, you will be billed for the upgraded tier.
Please let me know if that answers your question.
Sincerely,
Olga