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GST calculator

Add GST to a price or take it out of an inclusive amount, with the CGST/SGST or IGST split.

Amount is
Supply

Same amount at every slab

Questions

How do I remove GST from an inclusive amount?

Taxable value = inclusive amount ÷ (1 + rate/100). For ₹1,180 at 18%: 1,180 ÷ 1.18 = ₹1,000 taxable and ₹180 GST. Choose "Amount includes GST" above.

CGST + SGST or IGST?

Supplies within the same state (intra-state) are taxed as CGST + SGST (or UTGST), half each. Supplies between states (inter-state), imports and SEZ supplies are taxed as IGST at the full rate.

Which GST rates apply now?

From 22 September 2025 most goods and services moved to 5% or 18%, with 40% for a small list of luxury and sin goods, while 0.25% and 3% continue for specific items. 12% and 28% are kept here for invoices dated before the change. Always check the rate notified for your HSN/SAC code.

How is rounding handled?

Each figure is rounded to the paisa. For intra-state supplies an odd paisa goes to CGST so that CGST + SGST always equals total GST.