Add or remove GST — 5%, 12%, 18%, 28% — 100% free, runs in your browser
GST can be added to a price or extracted from one that already includes it, and confusing the two is a common source of billing errors. This calculator handles both directions and splits the tax into CGST and SGST for supply within your state, or shows it as IGST for interstate supply.
When supplier and buyer are in the same state, the tax splits equally into CGST and SGST. Across state lines, the whole amount is IGST.
Rates depend on the HSN code. Common slabs are 5, 12, 18 and 28 percent. Check the official GST rate finder, since misclassification causes notices.
That the price you were quoted already contains the tax. Removing GST works backwards from the total to find the base price.