Terms are not expected until later this month, but the issue could grow politically sensitive because the government has injected money into both companies, the newspaper said.

Morgan Stanley is paying Citigroup $2.7 billion to take control of the joint venture, which will combine its brokerage operation with Citigroup's Smith Barney unit.

Citigroup has taken $45 billion from the Troubled Asset Relief Program, while Morgan Stanley has taken $10 billion.

A spokesman for the joint venture did not immediately return a call seeking comment.

Broker retention payments have long been common on Wall Street, and brokerages themselves may become more important to banks because the credit crisis has curbed merger, underwriting and trading activity.

But many investors, politicians and regulators have questioned the propriety of the financial industry paying out big bonuses at all as losses mushroom from bad debts.

According to the newspaper, not all of the joint venture's 20,000 brokers would get retention payments. It said a broker who brought in $1 million in revenue last year might expect to get $500,000 to $1 million, depending on how much he continues to produce.

(Reporting by Jonathan Stempel; Editing by Gary Hill)