A smiling Anurag Dikshit, of the British colony of Gibraltar, entered the plea in U.S. District Court in Manhattan to charges that he used the Internet to transmit interstate and foreign wagering information. The charge carries a potential prison term of up to two years.
The 37-year-old citizen of India is the co-founder of PartyGaming, a Gibraltar online gambling company that offered casino and poker games and catered to a U.S. audience.
Dikshit signed a cooperation agreement and prosecutors indicated they may eventually submit a letter to the judge asking for leniency.
Dikshit and defense lawyer Mark Pomerantz declined to comment.
Prosecutors said in a release that Dikshit developed a proprietary software platform and directed the company's computer operations from 1998 through October 2006, when he also was PartyGaming's principal shareholder.
Bail was set at $15 million, but Dikshit was not required to post any cash or property, prompting Judge Jed S. Rakoff to ask what incentive Dikshit had to attend future court dates.
But prosecutors and Pomerantz agreed that Dikshit had demonstrated his desire to cooperate, in part by already paying $100 million to the U.S. Treasury and pledging to pay another $100 million within three months and the last $100 million installment by Sept. 30.
"Mr. Dikshit decided to come to the United States to enter the plea under his own volition. He's been interviewed in Europe. We believe Mr. Dikshit is dedicated to following through," Pomerantz said.
Forbes magazine estimated Dikshit's worth last year at $1.6 billion, making him the 618th richest person in the world.