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Advanced GST Calculator
Calculate GST with all components and detailed breakdown
Welcome to Advanced GST Calculator
Our comprehensive GST calculator helps you calculate Goods and Services Tax (GST) for your transactions. Calculate GST for both inclusive and exclusive amounts, with support for all GST types and rates. Perfect for businesses, accountants, and financial professionals across all sectors.
How to use this tool:
- Click "Get Started" to begin
- Select your calculation type (Exclusive/Inclusive of GST)
- Choose the appropriate GST type (Regular/Composition/Reverse Charge)
- Select transaction location (Intra State/Inter State)
- Enter the transaction amount
- Select applicable GST rate (0%, 5%, 12%, 18%, 28% or Custom)
- Optionally enter HSN/SAC code and GSTIN
- Toggle Reverse Charge Mechanism if applicable
- View detailed GST breakdown and summary
- Download your results as PDF, Excel or Image
Select whether amount is before GST (exclusive) or includes GST (inclusive)
Select the type of GST applicable to your transaction
Select whether transaction is within state (CGST+SGST) or between states (IGST)
Enter the transaction amount (before or after GST based on selection)
Select applicable GST rate for your transaction
Enter HSN code for goods or SAC code for services (4-8 digits)
Enter 15-digit GSTIN (e.g. 22AAAAA0000A1Z5)
Check if GST is to be paid under reverse charge mechanism
Brief description of goods/services for reference
| Component | Amount (Rs.) | Rate | Type |
|---|
Key Features of GST Calculator
Intelligent GST Type Handling
The calculator automatically adjusts calculations based on:
- Regular GST taxpayers (standard calculation)
- Composition scheme (different rates and rules)
- Reverse charge mechanism (recipient liability)
Location-Aware Tax Computation
- Intra-state
transactions:
- CGST: Central Government's share
- SGST: State Government's share
- Equal division of total GST rate
- Inter-state transactions:
- IGST: Single tax for interstate supplies
- Eliminates cascading effect
Comprehensive Reporting
Generate professional-quality reports in multiple formats:
- PDF: For official documentation
- Excel: For further analysis
- Image: For quick sharing
GSTIN Validation
Built-in checks to validate:
- 15-character format
- Proper checksum digit
- State code validity
HSN/SAC Code Integration
Proper classification of:
- Goods (HSN codes)
- Services (SAC codes)
- Future-proof for e-invoicing requirements
How to use GST Calculator: Step-by-Step Guide
Step 1: Select Calculation Type
Choose between:
- Exclusive of GST: When you know the base amount before tax
- Inclusive of GST: When you have the total amount including tax
Step 2: Choose GST Type
Select the applicable GST regime:
- Regular: For standard GST taxpayers
- Composition: For businesses under composition scheme
- Reverse Charge: When recipient pays GST
Step 3: Set Transaction Location
- Intra State: For transactions within the same state (CGST + SGST)
- Inter State: For transactions between states (IGST)
Step 4: Enter Transaction Amount
Input the amount either before GST (exclusive) or including GST (inclusive) based on your selection in Step 1.
Step 5: Select GST Rate
Choose from standard rates (0%, 5%, 12%, 18%, 28%) or enter a custom rate for special cases.
Step 6: Add Optional Details
- HSN/SAC Code: Classify your goods/services
- GSTIN: Validate your GST identification number
- Item Description: For reference in reports
Step 7: Toggle Reverse Charge
Enable if GST is to be paid under Reverse Charge Mechanism
.Step 8: View Comprehensive Results
The tool generates:
- Detailed GST breakdown (CGST/SGST/IGST)
- Pre-GST and post-GST amounts
- Effective tax rate
- Visual payment composition chart
- Printable/downloadable reports
Frequently Asked Questions (FAQs)
How accurate are the GST calculations?
Our tool uses the official GST calculation formulas prescribed by the CBIC. Results match government portal calculations when using the same parameters.
Can I calculate GST for composition scheme?
Yes, simply select "Composition" under GST Type. The calculator automatically applies the appropriate rules and rates.
How does the reverse charge feature work?
When enabled, the calculator shows the GST amount to be paid by the recipient rather than the supplier, with proper documentation notes.
Is my financial data stored anywhere?
No. All calculations happen in your browser. We don't store or transmit any of your financial information.
Can I use this for multiple transactions?
Absolutely. The tool is designed for repeated use. You can calculate as many transactions as needed.
How often are GST rates updated?
While standard rates are stable, we monitor all government notifications and update the tool promptly for any rate changes.
Is this suitable for e-commerce sellers?
Yes, particularly useful for calculating IGST on interstate sales and managing marketplace collections.
