Gstr 2A 20persent ITC

20 % of the eligible input (invoice wise) 

Example suppose your eligible ITC is 500000
500000*20% =600000 total ITC you will taken

Nov ITC as books is 500000 , ITC as per nov 2a is 300000,based on this your total eligible ITC for Nov will be 300000 + 20% on 300000 i.e 60000/- total 360000.

Question is ITC check in 2a head wise or totality wise

Igst. cgst. sgst. total
books. 5 2. 2 9

2A. 5. 1.5. 1.5. 8

0. .50. .50. 1

how to calculate total wise or head wise
total wise not paid gst
head wise balance c/F

Head wise only i.e igst as books to be matched with 2a igst and chat sgst as books to be matched with that of 2a.the balance if any in ITC as per books maybe carried to next month to avail.

Take ITC head wise...

Take Input Tax Credit ( ITC ) HEAD wise