"We are making bold decisions to meet our commitments to our shareholders," Fraser, 56, said in a statement.
The latest changes have already eliminated 35 committees, Fraser said, citing an example of efforts to reduce bureaucracy.
Job cuts are expected, but the bank did not estimate the number of positions being eliminated or the financial impact, sources familiar with the matter said.
"Investors are only going to give Citigroup credit for hard numbers meeting their goals," said Eric Compton, banking analyst at Morningstar.
Citi is eliminating layers in former divisions Institutional Clients Group and Personal Banking and Wealth Management.
Persons:
Jane Fraser, Fraser, Shahmir Khaliq, Andrew Morton, Peter Babej, Gonzalo Luchetti, Andy Sieg, Wells, JPMorgan Chase, Brian Mulberry, Eric Compton, Ernesto Cantu, Mark Mason, Tatiana Bautzer, Saeed Azhar, Medha Singh, Lananh Nguyen, Nick Zieminski, Jonathan Oatis
Organizations:
Citigroup, Citi, Bank of America, JPMorgan, Zacks Investment Management, Morningstar, Wealth Management, International, Thomson
Locations:
North America, New York