1
\mathrm{SP}=\frac{100-\mathrm{Discount\ Rate}}{100}\times \mathrm{MP}
2
\mathrm{SP}=\frac{100+\mathrm{Profit\ Rate}}{100}\times \mathrm{CP}
3
\mathrm{GST}=\frac{\mathrm{Rate\ of\ GST}}{100}\times\mathrm{Selling\ Price}
4
CGST = GST / 2
5
SGST = GST / 2
6
GST = CGST + SGST
7
Price including GST = SP + GST
8
Net GST Payable = Output GST − Input GST