(1) In case of continuous supply of service, the whole or part of which is determined or payable periodically or from time to time, shall be treated as separately provided at the date on which the payment is liable to be made by the service receiver, if such date is specified in the contract.

(2) If, before the time specified in sub-rule (1), the person providing the service issues an invoice or receives a payment, the service shall, to the extent covered by the invoice or the payment made thereof, be deemed to have been provided at the time the invoice was issued or the payment was received, as the case may be, whichever is earlier.

Explanation.- For the purposes of this rule, wherever any advance, by whatever name known, is received by the service provider towards the provision of taxable service, the point of taxation shall be the date of receipt of each such advance.

Explanation 2.- For the purposes of this rule, in respect of services taxable under section 66A of the Act, the point of taxation under sub-rule (2) shall be the date on which the invoice is received, or the payment is made, as the case may be, whichever is earlier.