Calculate GST from inclusive or exclusive price. Instant CGST + SGST / IGST breakdown.
For a GST-exclusive (base) price, GST amount = base price x GST rate / 100, and final price = base + GST. For a GST-inclusive price, base price = inclusive price x 100 / (100 + rate), and GST amount = inclusive price - base. For intra-state sales the GST splits equally into CGST and SGST (half each); for inter-state sales it is charged as a single IGST equal to the full rate. Indian rates are 0%, 5%, 12%, 18%, and 28%.
A product sold GST-inclusive at ₹1,180 at 18% GST: base price = 1180 x 100 / 118 = ₹1,000, and GST = ₹180. Within the same state this is CGST ₹90 + SGST ₹90; for an inter-state sale it is IGST ₹180.
Charge CGST + SGST when the buyer is in the same state as your store (intra-state). Charge IGST when the buyer is in a different state (inter-state). The total tax rate is the same either way.
Use the inclusive option: base price = MRP x 100 / (100 + rate). For example ₹1,180 at 18% gives a base of ₹1,000 and GST of ₹180.
It depends on the item's HSN code. Common slabs are 5% for many essentials, 12% and 18% for standard goods, and 28% for luxury or sin goods. Check your product's HSN to confirm.
No. Only businesses registered under GST must charge and collect it. Registration is generally required once turnover crosses the threshold (commonly ₹40 lakh for goods, lower in some special-category states).
Commmerce auto-calculates GST with HSN codes on every invoice. No manual entry.
See Billing & Checkout
