How do I remove GST from a total?

Divide the GST-inclusive amount by (1 + rate/100). For ₹1,180 at 18%: 1180 ÷ 1.18 = ₹1,000 before GST, and the GST is ₹180.

What are the current GST rates?

Since 22 September 2025 most goods and services fall in the 5% or 18% slabs, with 40% for luxury and "sin" goods; the earlier 12% and 28% slabs were folded into these. Some items carry special rates (for example 3% on gold) or are exempt. Check the CBIC website for a specific item.

What is the difference between CGST, SGST and IGST?

For sales within a state, GST is split equally between the Centre (CGST) and the State (SGST). For sales between states, the full GST is collected as IGST.

GST Calculator

Add GST.
Or take it out.

Amount before GST

₹

GST rate

Custom rate

Total (incl. GST): ₹1,180.00
GST @ 18%: ₹180.00
CGST @ 9%: ₹90.00
SGST @ 9%: ₹90.00

Base amount	₹1,000.00
GST	₹180.00
Total	₹1,180.00

Within a state, GST is split equally into CGST and SGST; between states it is charged as IGST. Check the current rate for your goods or services on the CBIC website.

Enter an amount, pick the GST rate and choose Add GST (to get the total) or Remove GST (to find the price before tax). Within a state the GST is split equally into CGST and SGST; between states it is shown as IGST.

How to calculate GST

Choose Add GST or Remove GST.
Enter the amount.
Pick the rate (5%, 18%, 40% or a custom rate).
Choose within-state or inter-state supply to see the CGST/SGST or IGST split.

GST on ₹1,000 and ₹10,000 at each main rate

Rate	GST on ₹1,000	Total	GST on ₹10,000	Total
3%	₹30	₹1,030	₹300	₹10,300
5%	₹50	₹1,050	₹500	₹10,500
18%	₹180	₹1,180	₹1,800	₹11,800
40%	₹400	₹1,400	₹4,000	₹14,000

GST formulas

To find	Formula
GST to add	Amount × rate ÷ 100
Total with GST	Amount × (1 + rate ÷ 100)
Price before GST	Total ÷ (1 + rate ÷ 100)
CGST and SGST	GST ÷ 2 each (intra-state)

Frequently asked questions

How do I remove GST from a total?: Divide the GST-inclusive amount by (1 + rate/100). For ₹1,180 at 18%: 1180 ÷ 1.18 = ₹1,000 before GST, and the GST is ₹180.
What are the current GST rates?: Since 22 September 2025 most goods and services fall in the 5% or 18% slabs, with 40% for luxury and "sin" goods; the earlier 12% and 28% slabs were folded into these. Some items carry special rates (for example 3% on gold) or are exempt. Check the CBIC website for a specific item.
What is the difference between CGST, SGST and IGST?: For sales within a state, GST is split equally between the Centre (CGST) and the State (SGST). For sales between states, the full GST is collected as IGST.