Understanding GST Calculations in India
The Goods and Services Tax (GST) is a multi-stage, destination-based tax levied on every value addition. Whether you are a business owner generating an invoice or a consumer checking a receipt, understanding Inclusive vs. Exclusive pricing is essential.
[Image showing the breakdown of a GST invoice with Base Price, CGST, and SGST highlighted]Inclusive vs. Exclusive: What's the difference?
- GST Exclusive: The tax is added on top of the base product price. If a product is ₹1,000 and GST is 18%, the buyer pays ₹1,180.
- GST Inclusive: The tax is already included in the displayed price. If the total is ₹1,180, the calculator works backward to find that the base price was ₹1,000 and the tax was ₹180.
The CGST, SGST, and IGST Split
In the Indian tax structure, GST is divided based on where the transaction happens:
- Intra-state (Within same state): Tax is split equally between CGST (Central GST) and SGST (State GST).
- Inter-state (Between two states): The entire amount is collected as IGST (Integrated GST).
Standard GST Tax Slabs
As of 2026, the four primary tax slabs remain 5%, 12%, 18%, and 28%. Basic necessities usually fall under the lower slabs, while luxury items and demerit goods (like tobacco) attract the 28% slab plus additional cess.