

GST Calculator
Quickly calculate Goods and Services Tax (GST) for any amount in India.
Understanding the GST Calculator
The Goods and Services Tax (GST) is an indirect tax levied on the supply of goods and services in India. It's a comprehensive, multi-stage, destination-based tax that replaced numerous indirect taxes like VAT, service tax, excise duty, etc. Understanding how GST affects pricing is crucial for both businesses and consumers. This GST Calculator helps you easily determine the final price of a product or service, either by adding GST to a base amount or by extracting the GST component from a price that already includes it.
Key Components of GST
GST in India typically has three main components:
- CGST (Central GST): Tax collected by the Central Government on intra-state sales (within the same state).
- SGST (State GST): Tax collected by the State Government on intra-state sales. For Union Territories, this is UTGST.
- IGST (Integrated GST): Tax collected by the Central Government on inter-state sales (between different states). IGST is generally the sum of CGST and SGST rates.
Our calculator automatically splits the total GST into CGST and SGST/UTGST components (assuming an intra-state transaction, where Total GST = CGST + SGST/UTGST, and typically CGST = SGST/UTGST = Total GST Rate / 2).
How to Use This Online GST Calculator
- Select Calculation Type: Choose whether you want to 'Add GST to Amount' (if you know the price before tax) or 'Remove GST from Amount' (if you know the final price including tax).
- Enter Amount: Input the relevant amount in Indian Rupees (₹). This will be the base amount if adding GST, or the final inclusive amount if removing GST.
- Select GST Rate: Choose one of the standard GST slab rates (3%, 5%, 12%, 18%, 28%) from the dropdown menu. If your rate is different, select 'Custom Rate' and enter the specific percentage in the field that appears.
- Click Calculate: Press the "Calculate GST" button.
- View Results: The calculator will display a detailed breakdown: Initial Amount, GST Rate used, CGST Amount, SGST/UTGST Amount, Total GST Amount, and the Final Amount.
- Download Results (Optional): Click the "Download Results" button to save the calculation details as a text file for your records.
GST Calculation Formulas
The formulas used by this GST Calculator are:
- To Add GST:
- GST Amount = Base Amount × (GST Rate / 100)
- Final Amount = Base Amount + GST Amount
- To Remove GST (from an Inclusive Amount):
- Base Amount = Inclusive Amount / (1 + (GST Rate / 100))
- GST Amount = Inclusive Amount - Base Amount
- CGST/SGST Calculation:
- CGST Amount = Total GST Amount / 2
- SGST/UTGST Amount = Total GST Amount / 2
Using this calculator ensures accuracy and saves time compared to manual calculations, especially when dealing with various GST rates and amounts frequently. It's a valuable tool for small business owners, accountants, shoppers, and anyone needing quick GST computations.