31 December 2019
one of my client has paid gst twice on regular supply in the month of november 2017. after that he realized that he has paid twice, then he increased the input in the month of september 2018 and did not give any effect to turnover. what i thought is he should not take input, but he should reduce his output liability. can he claim refund for that excess amount paid (nov 17) and can he reverse the input which he took wrongly (Sep 18)?