How do I add GST to a price?
Multiply the price by the GST rate and add it. Example: ₹1,000 at 18% → GST ₹180, total ₹1,180.
Free tool
GST calculator
Add GST to a price or take GST out of a total. Works for every Indian GST slab.
Price before GST
₹1,000
GST (18%)
₹180
CGST
₹90
SGST
₹90
Total with GST
₹1,180
Make GST bills automatically
Khatadar does this math on every bill, prints GST invoices, tracks udhaar and stock. Free plan: 50 bills a month, no card needed.
Common questions
How do I remove GST from a price?
Divide the total by (1 + rate/100). Example: ₹1,180 including 18% → base ₹1,000 and GST ₹180.
What are CGST and SGST?
For a sale within the same state, GST is split equally: half CGST (central) and half SGST (state). For a sale to another state, the full amount is IGST.
Which GST rates apply in India?
The common slabs are 0%, 5%, 12%, 18% and 28%. Check the correct rate for your item's HSN or SAC code with your CA or the GST portal.