Section 64.6100 - [Effective until 11/19/2024] Minimum and maximum Prepaid Calling account balances(a) No Provider shall institute a minimum balance requirement for a Consumer to use Debit or Prepaid Calling for interstate or international calls.(b) No Provider shall prohibit a consumer from depositing at least $50 per transaction to fund a Debit or Prepaid Calling account that can be used for interstate or international calls. 85 FR 67462 , Oct. 23, 2020