Reversal of Input Tax Credit in GST - Explained with Cases. Watch this video to know about these special cases in which Reversal of Input Tax Credit (ITC) is being performed.Reversal of Input Tax Credit (ITC) Meaning: Reversal of credit means reversal of the credit already taken. The essence of this write- up is to decipher the special cases and manner in which the availed Input tax credit is reversed.Rule of 42 and 43 of CGST rule states that: Rule 42 and 43 of the CGST rules are applicable for claim of input tax credit wherein the supply is being partly used for the purposes of business and partly for other purposes. In such cases, input tax credit cannot be claimed fully by the taxpayer and part of the input tax credit claim must be reversed.