GST Calculator - Calculate GST Amount Online
Calculate GST amount instantly. Find CGST, SGST, and IGST breakdowns for any amount with our free online GST calculator for Indian businesses.
Calculate GST
Enter the base amount before GST
Select applicable GST rate
GST Amount
₹1,800
CGST
₹900
SGST
₹900
Total Amount (with GST)
₹11,800
Formula & Explanation
GST Amount = (Original Price × GST Rate) / 100For intra-state transactions: CGST = GST/2, SGST = GST/2. For inter-state transactions: IGST = Full GST amount. The total price = Original Price + GST Amount.
Calculation Examples
18% GST on Services
₹10,000 service with 18% GST
GST: ₹1,800 | Total: ₹11,800
28% GST on Luxury Items
₹50,000 luxury item with 28% GST
GST: ₹14,000 | Total: ₹64,000
Benefits
- Instant GST calculation
- CGST/SGST/IGST breakdown
- All GST slab rates supported
- Perfect for invoicing
- Helps in tax planning
Use Cases
- Business invoicing
- Price quotation
- Tax filing preparation
- Cost estimation
- Billing verification
About GST Calculator
Our GST Calculator helps businesses and individuals calculate Goods and Services Tax quickly and accurately. Get instant CGST, SGST, and IGST breakdowns for any transaction amount. Perfect for invoicing, billing, and tax planning.
Frequently Asked Questions
GST (Goods and Services Tax) is an indirect tax levied on the supply of goods and services in India. It replaced multiple indirect taxes like VAT, service tax, and excise duty with a unified tax structure.
India has four main GST slab rates: 5%, 12%, 18%, and 28%. Essential items attract lower rates while luxury goods attract higher rates. Some items are exempt from GST.
CGST (Central GST) and SGST (State GST) are levied on intra-state transactions, split equally. IGST (Integrated GST) is levied on inter-state transactions and equals the full GST rate.
To find GST from a GST-inclusive amount: GST = Total Amount - (Total Amount × 100) / (100 + GST Rate). For example, for ₹1,180 with 18% GST: GST = 1180 - (1180 × 100/118) = ₹180.