Cenvat of previous month purchase bills

Pankaj Arora (Learner) (3134 Points)

12 November 2017  
Please clarify below mentioned query.

Few bills of Rs 3 Lakh for the month of September received after filing of September month GSTR 3B return, now in the month of October we have liability on taxable vale of Rs 5 Lakh. Please advise how can we claim cenvat on Rs 3 Lakh in the month of October for above mentioned September bills.