47 CFR § 64.6100
Minimum and maximum Prepaid Calling account balances
February 16, 2021
(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]