Add vs remove GST
Add GST starts from a base price and adds the tax on top — useful when you're pricing a product. Remove GST starts from a tax-inclusive total and works backwards to the base and tax — useful for reading an invoice. For intra-state sales the GST splits equally into CGST and SGST, shown automatically.
India's GST rates
Most goods and services fall into the 5%, 12%, 18% or 28% slabs, with 3% used for items like gold. 18% is the most common rate. Pick the right slab for your item; the calculator handles the arithmetic and the CGST/SGST breakup instantly.
Frequently asked questions
How do I remove GST from a price?
Switch to "Remove GST", enter the tax-inclusive total and pick the rate — you'll see the base amount and the GST portion.
What is the CGST/SGST split?
For a sale within one state, GST is divided equally — an 18% rate means 9% CGST and 9% SGST.
Which GST rate applies to my product?
That depends on the item's HSN/SAC classification. Check your invoice or the GST schedule; this tool computes any rate you choose.
Related tools
This tool gives estimates for general information only and is not financial advice. Confirm exact figures with your bank, lender or a qualified advisor.