“As required by the Bipartisan Budget Act of 2013, TSA has published an interim final rule to the Federal Register to restructure the September 11th Security Fee,” a press release from the government organization reads. “In accordance with Federal Law, the revenue generated from the security fee will be deposited in the general fund of the Treasury. The revenue is to be used to offset TSA costs for providing civil aviation security services, after stipulated amounts are applied to reduction of the federal deficit,” it concludes. The official website couldn’t be any more vague! The fee came about in December when Congress approved the increase—from $2.50 to $5.60 and $5 for trips that have a layover. The increase will go into effect in less than 30 days.