BUSINESS
GST Calculator
Add GST to an amount or remove GST from a GST-inclusive price. Free, instant results 100% in your browser - private & works offline.
Loading GST Calculator... If it does not load, enable JavaScript.
About GST Calculator
GST Calculator adds or removes GST for India’s 0/5/12/18/28% slabs. For intra-state, CGST = SGST = GST/2. Useful for MRP, invoices and reverse GST from GST-inclusive price.
Formulas
Add GST: GST amount = Base × rate/100 ; Total = Base + GST
Remove GST: Base = Inclusive × 100 / (100+rate) ; GST = Inclusive - Base
Remove GST: Base = Inclusive × 100 / (100+rate) ; GST = Inclusive - Base
Example
Base Rs 1,000 + 18% → GST Rs 180 → Total Rs 1,180 (CGST 90 + SGST 90)
MRP Rs 1,180 inclusive 18% → Base Rs 1,000 → GST Rs 180
MRP Rs 1,180 inclusive 18% → Base Rs 1,000 → GST Rs 180
FAQ
CGST/SGST split?
For intra-state, split GST equally; for inter-state IGST is full GST.
Related: Profit Margin • Discount Calculator