Citigroup is to repay $US20 billion in bailout funds from the US government and exit the Troubled Asset Relief Program.
Citigroup is the last of the big US banks to leave TARP. It will issue 17 billion in new shares to help finance the move.
Theoretically, it means it can now avoid pay restrictions on its top 100 employees.
The bank said it owed American taxpayers a debt of gratitude.