GST Calculator
GST Calculator — Goods & Services Tax
Calculate CGST, SGST, IGST and total tax payable for any amount
| Slab | Category | Example Goods / Services |
|---|---|---|
| 0% | Exempt | Fresh fruits, vegetables, milk, unbranded food grains, educational and healthcare services |
| 5% | Essential goods | Packaged food items, life-saving drugs, footwear under ₹1,000, economy class air travel |
| 12% | Standard (lower) | Processed food, business class air travel, computers, mobile phones, ayurvedic medicines |
| 18% | Standard (default) | Most goods and services — soaps, IT services, financial services, restaurants (non-AC/AC), telecom |
| 28% | Luxury / sin goods | Cars, motorcycles, tobacco, aerated drinks, ACs, luxury items (often with additional cess) |
Add or Remove GST
Works both ways — gross-up a base price with GST, or extract the GST hidden inside a GST-inclusive amount.
CGST & SGST Split
Automatically splits the calculated GST equally into CGST and SGST, as applicable for intra-state supply.
All Slabs Covered
Choose from 0%, 5%, 12%, 18%, 28% or enter any custom rate, including cess-adjusted rates.
Understanding GST
What is GST and How is it Calculated?
A complete guide to the Goods and Services Tax for Indian businesses and consumers
The Goods and Services Tax (GST) is a single, destination-based indirect tax levied on the supply of goods and services across India. Introduced on 1 July 2017, GST replaced a complex web of earlier indirect taxes — including VAT, Service Tax, Excise Duty, and Central Sales Tax — with one unified tax structure that applies uniformly across all states and union territories.
GST is a multi-stage, value-added tax, meaning it is collected at every step of the supply chain — from manufacturer to wholesaler to retailer to consumer — but businesses can claim credit for the tax already paid on their inputs (called Input Tax Credit, or ITC), so the tax burden does not cascade. Ultimately, the end consumer bears the final tax cost, while registered businesses simply act as collection agents for the government.
Depending on whether your amount already includes GST, use one of two formulas:
For example, on a base amount of ₹10,000 at 18% GST: GST amount = 10,000 × 0.18 = ₹1,800, so the final invoice value is ₹11,800. Conversely, if ₹11,800 is the GST-inclusive price at 18%, the base amount works out to ₹11,800 ÷ 1.18 = ₹10,000, and the embedded GST is ₹1,800. This calculator performs both calculations instantly and also splits the tax into CGST/SGST or IGST as applicable.
Collected by the Central Government on intra-state (within the same state) supplies. Charged alongside SGST, typically as exactly half of the total applicable GST rate.
Collected by the State Government on the same intra-state supply, in equal measure to CGST. Revenue from SGST goes entirely to the state where the sale occurs.
Levied by the Central Government on inter-state (between two different states) supplies and imports. IGST equals the full GST rate and is later apportioned between the centre and the destination state.
Applies in place of SGST for supplies within Union Territories without their own legislature (e.g. Chandigarh, Lakshadweep), charged alongside CGST at the same split.
India follows a multi-tier GST rate structure designed to keep essentials affordable while taxing luxury and sin goods more heavily.
| Rate | Nature | Typical Items |
|---|---|---|
| 0% | Exempt / Nil-rated | Fresh produce, milk, books, healthcare, education |
| 5% | Essentials | Edible oils, packaged food, footwear (low-value), transport |
| 12% | Standard (lower) | Processed foods, mobile phones, business-class travel |
| 18% | Standard (default) | Most goods & services, electronics, restaurants, IT/financial services |
| 28% | Luxury / Sin | Automobiles, tobacco, aerated drinks, ACs (often plus cess) |
Whether a transaction is intra-state or inter-state determines if GST is split into CGST+SGST or charged fully as IGST — important to confirm before invoicing.
Every good (HSN code) and service (SAC code) is mapped to a specific GST rate slab. Always confirm the correct code and rate for your product before invoicing.
Registered businesses can offset GST paid on purchases against GST collected on sales, reducing the net tax actually remitted to the government.
Certain luxury and sin goods (tobacco, large cars, aerated drinks) attract an additional GST Compensation Cess on top of the standard 28% slab.