A Federal Deposit Insurance Corp. program that expanded safeguards for business bank accounts will probably expire at the end of this year after the U.S. Senate failed to advance a proposal for an extension.

A 50-42 vote on a procedural motion fell 10 short of the 60 needed to move forward on a two-year extension of the Transaction Account Guarantee Program, effectively killing it. The TAG program, introduced in the wake of the 2008 credit crisis, guarantees $1.5 trillion in non-interest bearing accounts above the FDIC's general limit of $250,000. An initial extension is set to end Dec. 31.

"Absent unforeseen developments, the TAG program will expire at the end of the year," James Ballentine, executive vice president of congressional relations and political affairs at the American Bankers Association, said in an e-mail.