Free GST Calculator
Work out GST in seconds — add or remove tax, and see the exact CGST, SGST & IGST split. No formulas, no spreadsheets.
Result
Base + ₹500.00
GST = ₹10,500.00
Total
How to calculate GST with this tool
The ProfitBooks GST calculator does the math for you in three quick steps — whether you need to add GST to a base price or extract GST from a price that already includes it.
Enter the amount
Type the value of your goods or service in rupees.
Choose the GST rate
Pick a GST 2.0 slab — 0%, 5%, 18% or 40% — or set a custom rate.
Add or remove GST
Toggle the tax treatment and supply type. The split updates instantly.
GST 2.0 slab rates (current)
India moved to a simplified GST structure — popularly called GST 2.0 — effective 22 September 2025, following the 56th GST Council meeting. The earlier 12% and 28% slabs were removed and most goods and services now fall under four rates.
| Rate | Typically applies to |
|---|---|
| 0% | Nil-rated & exempt items — most fresh food, many essential medicines, individual health & life insurance |
| 5% | Daily essentials, packaged food, most medicines, EVs, agricultural goods |
| 18% | Standard rate — electronics, appliances, most services, apparel, small cars |
| 40% | Luxury & sin goods — aerated/caffeinated drinks, premium vehicles, tobacco-related items |
A few special rates sit outside the main slabs (for example, 3% on precious metals like gold, 1.5% on diamonds, and 0.25% on rough precious/semi-precious stones). Tobacco and pan masala stay on 28% + cess transitionally. Use the Custom rate box for these. Always confirm the rate and HSN/SAC code for your specific product before filing.
The four components of GST
Central GST — collected by the central government on intra-state supply, charged alongside SGST (usually each is half the total rate).
State GST — collected by the state government on intra-state supply, charged alongside CGST.
Integrated GST — collected by the centre on inter-state supply and imports, then shared with the destination state.
Union Territory GST — applies in place of SGST for supplies within a union territory, charged alongside CGST.
Add GST vs Remove GST
Add GST (exclusive): your amount is the base price, so GST is added on top. GST = Amount × Rate, and Total = Amount + GST.
Remove GST (inclusive): your amount already contains GST, so the tool works backwards to the base. Base = Amount ÷ (1 + Rate/100), and GST = Amount − Base.
Frequently asked questions
What is the current GST rate in India?
Under GST 2.0, effective 22 September 2025, the main slabs are 0%, 5%, 18% and 40%. The earlier 12% and 28% slabs were removed. A few special rates (3%, 1.5%, 0.25%) still apply to items like precious metals and stones.
How do I calculate GST on an amount?
To add GST to a base price, multiply the amount by the GST rate: GST = Amount × Rate ÷ 100, then Total = Amount + GST. For example, ₹10,000 at 18% gives ₹1,800 GST and ₹11,800 total.
How do I remove GST from a price that already includes it?
Divide the inclusive amount by (1 + rate/100) to get the base, then subtract to find the GST. For ₹11,800 at 18%: base = 11,800 ÷ 1.18 = ₹10,000, so GST = ₹1,800.
What is the difference between CGST, SGST and IGST?
For sales within the same state (intra-state), GST is split equally into CGST and SGST. For sales across states (inter-state) and imports, the whole amount is charged as IGST instead.
Is this GST calculator free to use?
Yes. The ProfitBooks GST calculator is completely free, with no sign-up required. It works on mobile and desktop and updates instantly as you type.
GST done right, every invoice
ProfitBooks auto-applies CGST, SGST & IGST, keeps your HSN/SAC codes in order, and turns it all into GSTR-1 & GSTR-3B ready reports — built for Indian small businesses.
Start Free — No Credit Card →This calculator is for general guidance only and reflects GST 2.0 rates effective 22 Sep 2025. It is not tax advice — confirm rates for your goods/services before filing.