Time & Method for payment of contribution payable under the Act?

Both the employer’s and employees’ contribution are required to be paid, in cash or by cheque, into the State Bank of India or any other Bank authorized by the ESI Corporation, by filling in a Prescribed Challan in quadruplicate within 21 days following the end of the calendar month in which the contribution falls due. The Bank will retain two copies of the Challan and return other two to the employer, one for submitting to the Regional Office of the Corporation and the other for the record of the employer.