gst
ChatGPTUse this when the user asks for a gst calculator, "18 gst on 5000", "remove gst from 1180", "cgst sgst split", or "igst on interstate". Ask for the rate if missing; never infer it from an amount or product. Add mode takes the pre-tax base; remove mode takes the GST-inclusive total. Defaults to intrastate CGST/SGST if interstate is omitted. Do not use for HSN-level rates, tax filing, place-of-supply decisions, cess, UTGST or ITC calculations.






