GST Calculator Online Free
Calculate GST, CGST, SGST & IGST instantly. Add or remove GST from any amount.
Tax Type
CGST + SGST (Intra-State supply)
Total Amount (with GST)
₹1,180.00
| Base Amount | ₹1,000.00 |
| CGST (9%) | ₹90.00 |
| SGST (9%) | ₹90.00 |
| Total GST | ₹180.00 |
| Total Amount | ₹1,180.00 |
₹1,000.00
Base Amount
₹180.00
GST Amount
₹1,180.00
Total
How GST Calculation Works
India's Goods and Services Tax (GST) is calculated at standard slab rates: 5%, 12%, 18%, and 28%. Toolkiya's GST calculator lets you compute tax in two directions: adding GST to a base price (exclusive calculation) or extracting GST from a GST-inclusive price (inclusive calculation).
The calculator shows the base amount, CGST (Central GST), SGST (State GST) or IGST (Integrated GST for interstate transactions), and the total amount including tax. For businesses, this helps verify invoice amounts and prepare accurate GST returns. All calculations are instant and run locally in your browser.
When to Calculate GST
Preparing invoices with correct GST amounts for clients. Verifying GST charges on vendor invoices and purchase orders. Calculating inclusive and exclusive prices for product pricing. Preparing GST return filings with accurate tax breakdowns. Comparing prices across different GST slab rates.
Why Use Toolkiya for GST Calculation
Most GST calculators online are embedded in accounting software that requires signup. Simple calculators lack the inclusive/exclusive toggle and CGST/SGST breakdown that businesses actually need.
Toolkiya's GST calculator covers all four slab rates, supports both inclusive and exclusive calculations, shows CGST/SGST/IGST breakdowns, and requires no account. Your financial figures are never transmitted to any server.
Frequently Asked Questions
What is GST?▼
GST (Goods and Services Tax) is a comprehensive indirect tax levied on the supply of goods and services in India. It replaced multiple indirect taxes like VAT, service tax, and excise duty from July 1, 2017.
What are the GST slabs in India?▼
India has four main GST slabs: 5%, 12%, 18%, and 28%. Essential items attract 0% or 5%, while luxury and sin goods attract 28%. Most common goods and services fall under 12% or 18%.
What is the difference between CGST, SGST, and IGST?▼
CGST (Central GST) and SGST (State GST) are levied on intra-state supplies (within the same state). IGST (Integrated GST) is levied on inter-state supplies (between different states). CGST + SGST = IGST rate.
How to calculate GST from a total amount?▼
To extract GST from a GST-inclusive price: Base Amount = Total / (1 + GST Rate/100). GST Amount = Total - Base Amount. For example, if total is Rs 1180 with 18% GST, base = 1180/1.18 = Rs 1000, GST = Rs 180.
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Built & maintained by Mayank Rai
Solo developer based in Lucknow, India