Formula:
GST Factor = (100 + GST%) / 100
Net Margin = MRP - (MRP × Retail Margin% / 100)
PTR = Net Margin / GST Factor
PTS = PTR - (PTR × Stockist Margin% / 100)
MRP = ₹100 | GST = 5% | Retail = 20% | Stockist = 10%
Net = 100 - 20 = ₹80
GST Factor = 1.05
PTR = 80 / 1.05 = ₹76.19
PTS = 76.19 - 7.62 = ₹68.57