GST Calculator
Calculate GST easily with our free online calculator. Add or remove GST from any amount with accurate CGST and SGST breakdown for India's new two-tier tax structure.
Advanced GST Calculator
2025Quick Select (Latest 2025 Rates):
⭐ Primary rates | 🪙 Gold/Jewellery | 🚗 Luxury/Sin goods (replaces 28%+cess)
Note: Cess discontinued for most goods (Sept 2025). Only tobacco products still have cess.
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About GST in India
What is GST?
GST (Goods and Services Tax) is an indirect tax levied on the supply of goods and services in India. It replaced multiple cascading taxes and created a unified tax structure across the country.
GST Tax Rates (2025 New Structure)
🎉 Major Update: Simplified Two-Tier Rate Structure
As of September 2025, India's GST has been restructured into a simpler two-tier system. 99% of items from 12% slab moved to 5%, and 90% from 28% slab moved to 18%.
- 0% Exempt items - Essential food items like paneer, roti, pizza bread
- 5% Merit rate - Daily essentials, agricultural equipment, healthcare services (most items from old 12% slab)
- 18% Standard rate - Most goods and services, automobiles and electronics (reduced from 28%)
- 40% Sin goods - Luxury items, tobacco, and other sin goods (replaces old 28% + cess)
Note: Legacy rates (12% and 28%) may still apply to some transition items. Use the calculator for accurate results.
Components of GST
- CGST (Central GST) - Tax collected by the Central Government (50% of total GST)
- SGST (State GST) - Tax collected by the State Government (50% of total GST)
- IGST (Integrated GST) - Applied on inter-state transactions
How to Calculate GST
Adding GST: Final Amount = Original Amount + (Original Amount × GST Rate / 100)
Removing GST: Original Amount = Total Amount / (1 + GST Rate / 100)
Example Calculation
If you have a product costing ₹1,000 with 18% GST:
• GST Amount = ₹1,000 × 18/100 = ₹180
• CGST = ₹90 (50% of GST)
• SGST = ₹90 (50% of GST)
• Total Amount = ₹1,000 + ₹180 = ₹1,180
Frequently Asked Questions
Is this GST calculator free to use?
Yes, our GST calculator is 100% free to use with no registration required. You can calculate GST for unlimited transactions.
How accurate is this calculator?
Our calculator follows the official GST calculation formula used in India and provides 100% accurate results for all GST rates.
Can I calculate GST for multiple items?
Yes, you can use the calculator multiple times for different amounts and GST rates. Simply change the values and recalculate.
What's the difference between adding and removing GST?
"Add GST" calculates the total amount when GST is added to a base price. "Remove GST" calculates the original amount when GST is already included in the total.
What changed in GST 2025 reforms?
In September 2025, India's GST was simplified into a two-tier structure. The main changes include:
- 99% of items in the 12% slab moved to 5%
- 90% of items in the 28% slab moved to 18%
- New 40% rate for luxury and sin goods (replacing 28% + cess)
- Pre-filled GST returns for easier compliance
- Faster refunds and MSME registration process
This calculator supports all rates including legacy rates for transition items.
Which GST rate should I use for my product/service?
The GST rate depends on your product or service classification under HSN/SAC codes. As of 2025: Most daily essentials fall under 5%, standard goods and services under 18%, and luxury/sin items under 40%. Check the official GST portal or consult a tax professional for your specific case.