WRONG GST CREDIT

Avishek Mukherjee (37 Points)

24 July 2020  
Sir,

If I have taken gst credit against any party from 17-18 to 19-20
during checking 2A found that GST no was cancelled.
what is the procedure for gst retun and interet, penalty rate.

Please suggest the interest, penalty calculation procedures.

Thanks in advance