Notification No. 25/2015-Service Tax (7D) The person liable for paying the service tax under sub-rule (7), (7A), (7B) or (7C) of rule 6, shall have the option to pay such amount as determined by multiplying total service tax liability calculated under sub-rule (7), (7A), (7B) or (7C) of rule 6 by 0.5 and dividing the product by 14 (fourteen), during any calendar month or quarter, as the case may be, towards the discharge of his liability for Swachh Bharat Cess