Retail + Scrap business - Sale GST but no purchase GST

ever (Others) (44 Points)

13 October 2019  

We are in scrap business and Retail. When buying scrap from different scrap persons paying through cash with no bill, but we sale to foundry company, we generate the 18% GST invoice. In retail transaction we got gst input and output, but in scrap only sale gst output.  Pls advise how to claim? Will be any risk running this kind of mixed transaction in same firm? please advise