Fidelity National Information Services Inc. said it expects first-quarter earnings to be below analysts' estimates.

The Jacksonville, Fla., banking technology vendor said in a regulatory filing late Wednesday that it projects adjusted earnings per share of 44 to 46 cents. Analysts were expecting 49 cents, according to Thomson Reuters.

FIS also expects to report adjusted revenue of $1.35 billion to $1.37 billion. Analysts were projecting $1.37 billion. The company, which sells account processing software and provides payments services to banks, reiterated guidance for the full year, including revenue growth of 9% to 11% and adjusted earnings per share of $2.24 to $2.36, an increase of 11% to 16% over 2010.