Tax & Salary
GST Calculator
Add or remove GST from an amount at any of the standard slab rates.
About the GST Calculator
Goods and Services Tax applies at slab rates — commonly 5%, 12%, 18% and 28% — on most goods and services in India. Adding GST to a base price is simple multiplication; extracting GST from an inclusive price requires dividing by (1 + rate), which this calculator handles in "Incl. of GST" mode.
Exclusive: GST = Base × rate | Inclusive: Base = Total / (1 + rate)
Frequently asked questions
What are CGST, SGST and IGST?
Within a state, GST splits equally into CGST (central) and SGST (state); for inter-state supplies the full amount is charged as IGST.
How do I remove GST from an MRP?
Divide the inclusive price by (1 + rate). For an 18% item: base = MRP / 1.18 — that's what the inclusive mode here computes.