The National Anti-Corruption Commission (NACC) resolved on Thursday to impeach former prime minister Yingluck Shinawatra over the rice-pledging scheme.
The NACC ruled by a vote of 7-0 to send the case to the Senate recommending the impeachment of Ms Yingluck. The commission found there were grounds for charges of dereliction of duty in her role as chair of the National Rice Policy Committee, NACC spokesman Vicha Mahakhun said on Thursday.
She had failed to stop the scheme after it was found to be incurring heavy losses, he said.
The NACC will forward the case to the Senate for impeachment proceedings.
The case is expected to go to the upper house next week, he added.
On Jan 16, the NACC agreed to launch an inquiry into the role of Ms Yingluck after an inquiry panel decided to bring formal corruption charges against 15 people involved in government-to-government rice deals, including former commerce minister Boonsong Teriyapirom and former deputy commerce minister Poom Sarapol.