"I am very clear on this...Black money should not be generated. Economic experts say the magnitude of the global economic crisis at times is not felt in India because of strong (parallel) economy of black money," he said.
"I am opposed to black money. I do not want it," he said on the sidelines of Indo-Myanmar-Thailand Friendship Car Rally flag off here.
His remarks come in the wake of the government's sudden decision to demonetise Rs 500 and Rs 1000 notes to stamp out black money, resulting in serpentine queues outside banks and ATMs.
The chief minister was of the view that demonetisation will not serve the purpose of checking black money.
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Akhilesh recently sent missives to Prime Minister Narendra Modi and Finance Minister Arun Jaitley urging them to allow Rs 500 and Rs 1,000 notes at private hospitals and medicine shops till November 30 to ensure medical facilities to the poor.
"As Rs 500 and Rs 1,000 were banned in haste, those undergoing treatment at hospitals and nursing homes are facing a lot of problems. I, therefore, request you to intervene and allow private hospitals, nursing homes and medicine shops to accept these notes till at least November 30," Yadav said.
With foreign tourists facing difficulties due to demonetisation, Yadav has directed the state Chief Secretary to ensure opening of extra counters for them to exchange currencies.
As the Centre's move caught people by surprise, SP supremo Mulayam Singh Yadav has demanded a roll back of the decision for a few days in view of the wedding season.
He suggested that people be given a weeks time by the government.