GST 105% CALCULATION QUERY

Ajnas (Student) (844 Points)

06 March 2021  
if previous month invoice amended it is autopopulated in that month GSTR 2A, we need to consider this amendment in current month 105% itc calculation? if yes what amount of amendment value full value or differential value? ie,
1.if invoice value Rs.150000+18% GST in December 2020, after amendment Rs.180000+18% GST But this amendment made in january 2021 and after amendment it is autopopulated in GSTR2A of December 2020 then this is amended invoice is considered for 105% itc calculation in January 2021 what amount Rs.180000+18 GST or 30000+18% GST?
2.if invoice value Rs.180000+18% GST in December 2020, after amendment Rs.150000+18% GST But this amendment made in january 2021 and after amendment it is autopopulated in GSTR2A of December 2020 then this amended invoice is considered for 105% itc calculation in January 2021 what amount Rs.150000+18 GST or 30000+18% GST?
what to do in both situation?
Situation one we need to consider this as itc for 105% calculation in january 2021?
Situation two we need to reduce this itc from 105% calculation in january 2021?