QuickLinks -- Click here to rapidly navigate through this document

Exhibit 12.01

CITIGROUP INC.
CALCULATION OF RATIO OF INCOME TO FIXED CHARGES

	Year ended December 31,
In millions of dollars, except for ratios
	2005(1)(2)		2004(1)(2)		2003(1)(2)		2002(1)(2)(3)		2001(1)(2)(3)
EXCLUDING INTEREST ON DEPOSITS:
Fixed Charges
Interest expense (other than interest on deposits)	$	23,120	$	13,271	$	9,942	$	12,273	$	19,887
Interest factor in rent expense		516		487		460		445		390
Total fixed charges	$	23,636	$	13,758	$	10,402	$	12,718	$	20,277
Income
Income from continuing operations before taxes, minority interest and cumulative effect of accounting changes	$	29,433	$	22,736	$	25,170	$	19,388	$	18,929
Fixed charges (excluding preferred stock dividends)		23,636		13,758		10,402		12,718		20,277
Total income	$	53,069	$	36,494	$	35,572	$	32,106	$	39,206
Ratio of income to fixed charges excluding interest on deposits		2.25		2.65		3.42		2.52		1.93
INCLUDING INTEREST ON DEPOSITS:
Fixed Charges
Interest expense	$	36,676	$	22,004	$	17,184	$	21,177	$	31,664
Interest factor in rent expense		516		487		460		445		390
Total fixed charges	$	37,192	$	22,491	$	17,644	$	21,622	$	32,054
Income
Income from continuing operations before taxes, minority interest and cumulative effect of accounting changes	$	29,433	$	22,736	$	25,170	$	19,388	$	18,929
Fixed charges (excluding preferred stock dividends)		37,192		22,491		17,644		21,622		32,054
Total income	$	66,625	$	45,227	$	42,814	$	41,010	$	50,983
Ratio of income to fixed charges including interest on deposits		1.79		2.01		2.43		1.90		1.59

(1)

On December 1, 2005, Citigroup completed the sale of substantially all of Citigroup's Asset Management Business to Legg Mason, Inc. Citigroup reports these businesses separately as discontinued operations in the Company's Consolidated Statement of Income. The calculation of the ratio of income to fixed charges excludes discontinued operations. Prior periods have been restated on a comparable basis.

(2)

On July 1, 2005, Citigroup completed the sale of Citigroup's Travelers Life & Annuity and substantially all of Citigroup's international insurance businesses to MetLife, Inc. Citigroup reports these businesses separately as discontinued operations in the Company's Consolidated Statement of Income.

(3)

On August 20, 2002, Citigroup completed the distribution to its stockholders of a majority portion of its remaining ownership interest in Travelers Property Casualty Corp. (TPC) (an indirect wholly-owned subsidiary of Citigroup on Dec 31, 2001). Following the distribution, Citigroup began reporting TPC separately as discontinued operations in the Company's Consolidated Statement of Income.

QuickLinks

CITIGROUP INC. CALCULATION OF RATIO OF INCOME TO FIXED CHARGES