This excerpt taken from the C 10-Q filed Nov 6, 2009.
Banking SubsidiariesConstraints on Dividends
There are various legal limitations on the ability of Citigroup's subsidiary depository institutions to extend credit, pay dividends or otherwise supply funds to Citigroup and its non-bank subsidiaries. Currently, the approval of the OCC, in the case of national banks, or the Office of Thrift Supervision, in the case of federal savings banks, is required if total dividends declared in any calendar year exceed amounts specified by the applicable agency's regulations. State-chartered depository institutions are subject to dividend limitations imposed by applicable state law.
In determining the declaration of dividends, each depository institution must also consider its effect on applicable risk-based capital and leverage ratio requirements, as well as policy statements of the federal regulatory agencies that indicate that banking organizations should generally pay dividends out of current operating earnings. Citigroup did not receive any dividends from its banking subsidiaries during the third quarter of 2009.