(1) Date of payment of cess shall be the date on which the amount is deposited with the cess collector under clauses (a) and (b) of sub-rule (2) of rule41, or the date of deduction at source under clause (d) of sub-rule (2) of rule41, or the date on which the amount has been deposited with the local authority under clause (c) of sub-rule (2) of rule41, as the case may be.

(2) If any employer fails to pay any amount of cess payable under section 100, within such time as may be specified in the assessment order, such employer shall be liable to pay interest on the amount of cess, to be paid, at the rate of one percent per month or part thereof comprised in the period from the due date until the date of actual payment.