If a person have salary income in 2020-21 and filed ITR 1 opting new Tax Regime. In FY 2021-22 he has business income whether he can opt for new Tax Regime Note: He has not filed 10IE form
Mr. Dhirajlal is correct, you can opt if you file form 10IE within due date but please note those with business income can only choose once and not switch back ever year like in case of people other than business income.