The billing address has nothing to do with the taxes applied to the account. I just found this out when I was complaining about my bill constantly changing. There is a section under your AT&T profile called User Information. In that section there is something called "Place of primary use." This location is what your taxes are based on. I found out I have been paying California taxes for two years after I moved despite changing the billing address.
I complained and they gave me a $25 credit. Pretty measly, but it was something. I later noticed that they doubled my data plan for the next two years (from 3GB to 6 GB), presumably to make up for it.
guess you are right
Administrative Fee
$0.61
Federal Universal Service Charge
$1.32
Regulatory Cost Recovery Charge
$1.20
Total Surcharges & Fees
$3.13
Government Fees & Taxes
County District Sales Tax - Telecom
$0.18
County Sales Tax - Telecom
$0.36
OH State Sales Tax - Telecom
$2.05
State/Local Wireless-E911 Costs ($.25/billed number)
$0.25
Total Government Fees & Taxes
$2.84
6 bucks total or so. 10% of bill, them *******s. It use to be cheaper.