47 CFR § 64.6070
Taxes and fees
February 16, 2021
No Provider shall charge any taxes or fees to users of Inmate Calling Services for, or in connection with, interstate or international calls, other than those permitted under §64.6020, and those defined as Mandatory Taxes, Mandatory Fees, or Authorized Fees.
[85 FR 67462, Oct. 23, 2020]