As per the second proviso to Section 16(2)(d) of the CGST Act, 2017 if a recipient of the supply does not pay to its supplier the value of the supply along with the tax within 180 days from the date of issue of invoice by the supplier, the amount of ITC availed proportionate to the unpaid amount would be added to the output tax liability of the recipient of the supply along with the interest thereon. The credit so reversed can be reclaimed when the value is paid to the supplier along with the tax thereon. Thus the government is not assuring payment within 180 days.
(FAQ-7(c) TEXTILES)