Can I change the contract dates on a bill plan?

Yes, but changing one date doesn't update the others automatically. The contract start and end dates should reflect the actual terms of the contract. In addition, the contract start date is also the first billing period start date.

By default, the contract start date and first transaction date are the system date, and the contract end date is one year later. If you update the contract start date, then you must update the first transaction date accordingly.