GST Calculator
Add or remove GST with CGST/SGST split for India
GST breakdown
- Base amount
- ₹10,000
- GST
- ₹1,800
- CGST
- ₹900
- SGST
- ₹900
- Total
- ₹11,800
How to use
- Enter the amount (base or GST-inclusive depending on mode).
- Select GST rate: 5%, 12%, 18% or 28% (common slabs in India).
- Choose Add GST (exclusive → inclusive) or Remove GST (inclusive → base).
- View CGST and SGST split (half each for intra-state).
The formula (in simple words)
To add GST: GST amount = base × rate ÷ 100, total = base + GST. To remove GST from an inclusive price: base = total ÷ (1 + rate/100). CGST and SGST are each half of total GST for same-state sales.
Frequently asked questions
Inter-state sales use IGST (full rate in one line). Same-state B2B often shows CGST + SGST at half rate each.