How to calculate GST
Adding GST: GST = Net price × Rate ÷ 100, and Gross = Net + GST.
Removing GST: Net = Gross × 100 ÷ (100 + Rate), and GST = Gross − Net.
For an intra-state sale, total GST is split equally into CGST (Central) and SGST (State). For an inter-state sale, the full amount is charged as IGST.
Common GST slabs in India
- 5% – essential items such as packaged food staples
- 12% and 18% – most goods and services
- 28% – luxury and sin goods
GST rates change from time to time; always check the latest notified rate for your product or service.