GST (Goods and Services Tax) Calculator
Estimate GST inclusive/exclusive prices and tax splits in India.
Use this free GST calculator to calculate GST amount, net price, and tax breakdown for CGST, SGST, and IGST. Supports all standard GST slabs and includes an advanced itemized invoice mode for business needs.
Calculator Settings
GST will be added to the amount
Levies CGST + SGST
Comparison Across GST Slabs
| GST Rate | GST Amount | Net Amount | Total Price |
|---|---|---|---|
| 0% | ₹0 | ₹10,000 | ₹10,000 |
| 3% | ₹300 | ₹10,000 | ₹10,300 |
| 5% | ₹500 | ₹10,000 | ₹10,500 |
| 12% | ₹1,200 | ₹10,000 | ₹11,200 |
| 18% | ₹1,800 | ₹10,000 | ₹11,800 |
| 28% | ₹2,800 | ₹10,000 | ₹12,800 |
Calculation Summary
Total GST Amount
₹1,800
Base Price
₹10,000
Final Price
₹11,800
Tax Split
GST Breakdown
Overview
What is GST (Goods and Services Tax)?
GST is a comprehensive, multi-stage, destination-based tax that is levied on every value addition in India. It has replaced many indirect taxes like VAT, Service Tax, and Excise Duty. GST is generally calculated as a percentage of the transaction value and can either be added to the price (exclusive) or extracted from the total (inclusive).
Key Features of This GST Calculator
Calculates both GST-inclusive and GST-exclusive amounts.
Supports all common GST slabs: 0%, 3%, 5%, 12%, 18%, and 28%.
Provides a clear split between CGST, SGST, and IGST.
Advanced mode supports itemized invoice calculation with discounts.
Instant comparison across different GST rates.
How it works
How GST is Calculated - Formula Explained
To add GST, multiply the base price by the GST rate. To remove GST from a total price, divide the total by (1 + GST Rate). The difference between the total and the extracted base is the GST amount.
GST Calculation Formula
Add GST: GST Amount = (Base x Rate) / 100 Remove GST: Base = Total / (1 + Rate / 100)
Base amount
B
Taxable value
GST rate
R
Tax percentage
Total amount
T
GST inclusive value
Formula context
Review the formula flow to see how the core inputs combine into the final output.
1. Enter the amount
Provide the base amount or the total amount depending on whether you want to add or remove GST.
2. Select GST rate
Choose from standard slabs (0%, 3%, 5%, 12%, 18%, 28%) or enter a custom rate.
3. Choose tax split
Select whether it is an intra-state (CGST + SGST) or inter-state (IGST) transaction.
Quick guide
Example Calculation
If a product costs Rs. 1,000 (base) and the GST rate is 18%, the GST amount is Rs. 180, and the final price is Rs. 1,180. If the final price is Rs. 1,180 and you want to extract GST, the base price is Rs. 1,000 and the GST amount is Rs. 180.
Worked example
Base amount
Rs. 1,000
GST rate
18%
GST amount
Rs. 180
Total amount
Rs. 1,180
Formula substitution (Add GST)
GST amount = 1,000 x 18% = Rs. 180
Total amount = 1,000 + 180 = Rs. 1,180
Tax split (Intra-state) = CGST (9%) + SGST (9%)
CGST = Rs. 90, SGST = Rs. 90
This calculator is for estimation. For official business filings, always refer to the actual invoice values and consult a tax professional.
Tax information
GST Slab Information
In India, GST rates are decided by the GST Council. Different products and services fall under different slabs like 5%, 12%, 18%, and 28%. Basic necessities are often kept at 0%.
The mode (Add vs Remove) and the percentage rate are the primary drivers. Discounts in advanced mode also affect the taxable base.
Calculator education
How GST is calculated
This calculator estimates the GST amount, net price, and gross price based on the Indian GST rules (Add GST or Remove GST modes).
1. Enter the amount
Provide the base amount or the total amount depending on whether you want to add or remove GST.
2. Select GST rate
Choose from standard slabs (0%, 3%, 5%, 12%, 18%, 28%) or enter a custom rate.
3. Choose tax split
Select whether it is an intra-state (CGST + SGST) or inter-state (IGST) transaction.
Tax Information
GST Slab Information
In India, GST rates are decided by the GST Council. Different products and services fall under different slabs like 5%, 12%, 18%, and 28%. Basic necessities are often kept at 0%.
Key Drivers
What affects the calculation
The mode (Add vs Remove) and the percentage rate are the primary drivers. Discounts in advanced mode also affect the taxable base.
Planning Note
Good to know
This calculator is for estimation. For official business filings, always refer to the actual invoice values and consult a tax professional.
Use cases
Common GST Scenarios
GST calculation varies based on whether you are buying/selling and where the parties are located.
Scenario 1: Intra-state Sale
When buying or selling within the same state, GST is split equally into CGST (Central) and SGST (State).
Scenario 2: Inter-state Sale
When the transaction happens between two different states, the full tax is applied as IGST (Integrated GST).
Scenario 3: GST-Inclusive Pricing
Common in retail, where the sticker price already includes GST. Use the 'Remove GST' mode to find the underlying taxable value.
FAQ
Frequently Asked What is GST (Goods and Services Tax) Questions
Common questions about GST rates, registration, and calculation methods in India.
If the price is GST-inclusive, the base amount is calculated as: [Total Price / (1 + GST Rate / 100)]. The GST amount is the difference between the total price and this base amount. Our calculator handles this automatically in the "Remove GST" mode.
Related tools
Related Calculators
Explore other tools to help with your business and personal tax planning.
Income Tax Calculator
Calculate and compare your personal income tax liability.
HRA Calculator
Optimize your house rent allowance for better tax savings.
Gratuity Calculator
Estimate your gratuity payout and its tax-free portion.
EMI Calculator
Calculate loan EMIs and check total interest costs.