Kejriwal, who also demanded Khurshid's resignation from the Cabinet, announced his protest programme after a group of 35-40 disabled persons met him at his office in New Delhi.
"Money bungling in the NGO floated by the law minister's wife is a matter of shame. It is unfortunate to have such law minister in the country.
"We demand resignation of the law minsiter and immediate arrest of his wife. We will gherao Sonia Gandhi's residence asking for Khurshid's resignation," Kejriwal said.
A Hindi news channel on Tuesday alleged that the NGO forged signatures of senior officials in several districts of Uttar Pradesh depriving disabled people of their money.
Khurshid's wife Louise Khurshid denied the allegations and said it was "devoid of any merit, and is false, malicious and baseless".
In a statement, she said she herself had requested UP chief minister Akhilesh Yadav on September 17 to conduct an inquiry so that "truth is revealed and it is established that the trust has not forged the signatures of any officers of the state of UP".