AT&T Mobility will add a new “Mobile Administrative Fee” to wireless customer bills beginning this May to defray the costs of doing business.

Broadband Reports notes the new fee amounts to jacking up the cost of service without raising advertised rates.

In most states, the new “Administrative Fee” will amount to $7.32 a year, billed monthly.

AT&T’s website explains the new charge this way:

The Administrative Fee helps defray certain expenses AT&T incurs, including but not limited to: (a) charges AT&T or its agents pay to interconnect with other carriers to deliver calls from AT&T customers to their customers; and (b) charges associated with cell site rents and maintenance.

This is by no means the only “junk fee” AT&T slaps on customer bills that can add up to more than 8.5 percent of your average monthly bill. Among the others:

• Federal Regulatory Fee
• Telecommunications Relay Service Recovery Fee
• Wireless Number Portability and Number Pooling Recovery Fee
• Enhanced 911 Recovery Fee
• Wireless Tower Mandates Costs
• State Area Code Relief Costs
• Customer Proprietary Network Information Notification Costs
• Network Outage Reporting Costs
• State Commission Annual Reporting Costs (Applies only in IN, KY, LA, NM, OH, VA, WI, WV WY)
• Gross Receipts Surcharge (Missouri only)
• Puerto Rico Regulatory Fee (Puerto Rico only)
• Property Tax Surcharge (Puerto Rico only)

Some customers have attempted to break two-year service contracts penalty-free over the addition of new fees, but wireless carriers have made it increasingly difficult to escape, usually because they claim the imposition of new, non-mandated fees do not violate the fine print of their service contract. But complaining customers can usually get carriers to waive the fees as a courtesy. It could not hurt to ask.