GST Calculator Tool
Calculate GST amounts quickly and accurately
Calculation Results
How to Use GST Calculator
Adding GST to Amount
Select “Add GST” Tab
Click on the “Add GST” tab to calculate GST on your base amount.
Enter Base Amount
Input the amount excluding GST in the “Amount (Excluding GST)” field.
Choose GST Rate
Select from common rates (5%, 12%, 18%, 28%) or enter a custom rate.
Calculate
Click “Calculate GST” to see the GST amount and total amount including GST.
Removing GST from Amount
Select “Remove GST” Tab
Click on the “Remove GST” tab to find the original amount before GST.
Enter Total Amount
Input the amount including GST in the “Amount (Including GST)” field.
Choose GST Rate
Select the GST rate that was applied to the original amount.
Calculate
Click “Calculate Original Amount” to see the base amount and GST breakdown.
GST Rate Information
5% GST
Essential items, books, food grains
12% GST
Computers, mobile phones, medicines
18% GST
Most goods and services
28% GST
Luxury items, automobiles
Useful Tips
Always verify the applicable GST rate for your specific product or service
Use the breakdown feature to understand how GST is calculated
Keep records of GST calculations for tax compliance
Double-check your inputs for accurate calculations
Use the tool for both business and personal tax planning
This tool works offline once loaded in your browser