GST Calculator
Calculate Goods and Services Tax (GST) amounts for 5%, 12%, 18%, and 28% tax slabs. Add or remove GST and view CGST and SGST splits free in your browser.
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How to use GST Calculator
- 1
Enter the base price amount.
- 2
Select whether to Add GST (inclusive) or Remove GST (exclusive).
- 3
Choose a standard GST percentage rate (5%, 12%, 18%, 28%) or select Custom.
- 4
Click 'Calculate GST' to review original, tax, and final prices.
Capabilities
- Tax additions (exclusive GST) and tax extractions (inclusive GST)
- Preset standard tax slabs + custom percentage parameters
- Detailed tax breakdown including CGST and SGST splits (50/50 central/state)
- Quick parameters clearing
How Goods and Services Tax (GST) Is Calculated in India
Goods and Services Tax (GST) is a comprehensive indirect consumption tax levied on the supply of goods and services across India. Understanding how to add GST to wholesale prices or extract base values from retail MRPs is vital for merchants, freelancers, and consumers.
Used when preparing customer invoices from net manufacturing or service fees. Multiplies net price by the tax percentage to compute total payable price.
Extracts the underlying net cost and embedded tax from a gross price (such as an MRP tag), essential for filing input tax credit (ITC) claims.
Worked GST Calculation Examples (18% Rate)
Example 1 (Add 18% GST to ₹10,000 Net Price):
• Base Price: ₹10,000.00
• Total GST (18%): ₹1,800.00 (CGST: ₹900.00 | SGST: ₹900.00)
• Final Gross Price: ₹11,800.00
Example 2 (Remove 18% GST from ₹11,800 Retail Price):
• Pre-Tax Base Price: ₹11,800 * (100 / 118) = ₹10,000.00
• Embedded GST Amount: ₹11,800 - ₹10,000 = ₹1,800.00
Tax rate slabs and intra-state CGST/SGST apportionment are governed by official notifications of theCentral Board of Indirect Taxes and Customs (CBIC) and the GST Council.
For personal income tax slabs and regime comparisons under Indian tax law, use Income Tax Calculator.
This tool operates in a sandbox directly inside your web browser. All parsing, processing, and downloads are rendered locally. Your file size, metadata, and contents never cross the network. It works completely offline.
Frequently Asked Questions
How is GST calculated when adding tax to a base price?
When adding GST (tax-exclusive amount), the formula is: GST Amount = (Base Price * GST Rate) / 100, and Final Price = Base Price + GST Amount.
How do I reverse or remove GST from a tax-inclusive total?
To remove GST from a gross price, use the reverse formula: Base Price = Gross Price * [100 / (100 + GST Rate)], and GST Amount = Gross Price - Base Price.
What is the difference between CGST, SGST, and IGST?
For transactions within the same state (intra-state), GST is split equally into Central GST (CGST) and State GST (SGST). For sales between different states (inter-state), Integrated GST (IGST) applies at the full rate.
What are the standard GST rate slabs in India?
The standard GST rate slabs notified by the GST Council are 0% (essential foods), 5% (basic items/transport), 12% (processed foods/computers), 18% (most services and manufactured goods), and 28% (luxury/automobiles).
Can I calculate GST with a custom percentage?
Yes. WebTorq allows you to enter any custom percentage rate (e.g., 3% for gold or 0.25% for cut diamonds) to calculate exact tax splits.