The 69-year-old, who underwent two abdominal surgeries last month, will host the ceremony in Chennai.
"Asia Cup over soon and then IPL...opening extravaganza in Chennai.. and yours truly a small part of it...nervous as hell. April 3 is the day for the opening, preparing for it already...getting back into the grind, " he tweeted.
"And yes the show will be on Sony...meeting all the Captains and teams will be such an honour..seen all of them on TV, now personally, " he added.
Season 5 of the IPL will feature 76 matches, over a period of 54 days in the month of April and may. Total of nine teams are participating in the cricket league.
"Mr. Bachchan will play a part in IPL opening ceremony, " BCCI vice president Niranjan Shah told. He, however, he refused to give any details.