DETROIT, Dec. 14 /PRNewswire-FirstCall/ -- Comerica Bank announced it will
increase its prime rate to 5.25 percent from 5.00 percent effective today,
December 14, 2004.

Comerica Bank is a subsidiary of Comerica Incorporated (NYSE: CMA), a
financial services company headquartered in Detroit, strategically aligned
into three major lines of business: the Business Bank, Small Business &
Personal Financial Services, and Wealth & Institutional Management.
Comerica's approximately 11,000 employees focus on relationships, and helping
people and businesses be successful. Comerica Bank locations can be found in
Michigan, California, Texas and Florida, with select businesses operating in
several other states, Canada and Mexico. Comerica reported total assets of
$53 billion at September 30, 2004. To receive e-mail alerts of breaking
Comerica news, go to http://www.comerica.com/newsalerts .

SOURCE Comerica Bank
CONTACT: Media Contact: Wayne J. Mielke, 313-222-4732,
or Investor Contact: Helen L. Arsenault, 313-222-2840, both of Comerica Bank
Web site: http://www.comerica.com