GST Calculator for India – Calculate Tax Online
Calculate GST amounts instantly with support for both current and previous tax rates. Get accurate CGST, SGST, and IGST breakdowns for your business transactions.
Calculate GST Amount
Calculation Results
Online tool for instant GST calculations with support for current and previous tax rates
Understanding GST Calculation
Calculate CGST, SGST, and IGST amounts for your business transactions. This tool supports both current GST 2.0 rates and previous tax structures for accurate calculations based on your requirements.
📊 Dual Rate Support
Calculate using current GST 2.0 rates (0%, 5%, 18%, 40%) or previous rates (5%, 12%, 18%, 28%) based on your transaction date and requirements.
💰 Instant Results
Get immediate breakdowns of CGST, SGST, and total tax amounts with accurate calculations for both inclusive and exclusive scenarios.
📱 Mobile Friendly
Access from any device – desktop, tablet, or mobile. Calculate on-the-go with a responsive interface designed for ease of use.
🔄 Flexible Modes
Switch between inclusive and exclusive calculations instantly for different business scenarios and customer requirements.
✅ Accurate & Free
100% accurate calculations using current tax laws. No registration required, unlimited calculations, and instant results for all your business needs.
💼 Business Ready
Detailed breakdowns suitable for invoice generation, financial reporting, and tax compliance. Reduce calculation errors and save time.
| Current Rate | Category | Common Examples | CGST + SGST Split |
|---|---|---|---|
| 0% | Essential Items | Fresh fruits, vegetables, grains, milk, books | 0% + 0% |
| 5% | Merit Rate | Packaged food, medicines, daily essentials | 2.5% + 2.5% |
| 18% | Standard Rate | Electronics, IT services, restaurants, most goods | 9% + 9% |
| 40% | Demerit Rate | Luxury cars, premium bikes, tobacco | 20% + 20% |
Current rates effective from September 22, 2025. For official information, visit the GST Portal by Government of India.
About GST in India
What is GST?
Goods and Services Tax (GST) is India’s unified indirect tax system. Calculate CGST, SGST, and IGST for accurate tax determination on goods and services. For official information, visit the GST Portal.
GST Components
CGST: Central tax component
SGST: State tax component
IGST: Inter-state transactions
The tool automatically splits taxes correctly. Learn more at CBIC GST Portal.
Benefits of Using This Tool
Get instant, accurate calculations for your business transactions. Essential for invoicing, compliance, and financial planning with support for both current and previous tax structures.
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Frequently Asked Questions
Enter the amount, select the applicable tax rate from the buttons (or enter custom rate), choose whether the amount is GST inclusive or exclusive, then click Calculate. The tool will instantly show CGST, SGST, and total GST amounts. For intra-state transactions, tax is split equally between CGST and SGST. For inter-state transactions, IGST applies.
Current rates effective from September 22, 2025: 0% for essential items (fresh produce, books), 5% merit rate for daily necessities (packaged foods, medicines), 18% standard rate for most goods and services (electronics, restaurants), and 40% for luxury items (premium cars, tobacco). The tool also supports previous rates (5%, 12%, 18%, 28%) for historical calculations.
Yes, the tool supports both modes. For GST exclusive: it adds tax to your base amount. For GST inclusive: it extracts the tax portion from the total amount using the formula: GST Amount = Total Amount – (Total Amount ÷ (1 + GST Rate/100)). Simply select your preferred mode before calculating.
Yes, this tool is designed for all business types – from small traders to large enterprises. It handles all tax rates, supports both B2B and B2C transactions, and provides detailed CGST, SGST, and IGST breakdowns suitable for invoice generation, accounting, and compliance requirements.
Yes, this tool is completely free with no registration required. It provides 100% accurate calculations based on current GST laws and rates. You can perform unlimited calculations and access detailed tax breakdowns for professional business compliance and reporting.
This tool eliminates human error and ensures consistent results. It uses precise mathematical formulas and instantly computes exact CGST, SGST, and IGST amounts, making it more reliable than manual methods for professional business use. It also saves significant time when processing multiple transactions.
Disclaimer:
This tool is for informational and educational purposes only. For official GST rates, regulations, and compliance requirements, please refer to the GST Portal and Central Board of Indirect Taxes and Customs.
*Terms and conditions apply for all financial products and services offered by Protium Finance Ltd.