GST Calculator
Use this free online GST Calculator to calculate GST amount, net amount, and total amount instantly. Enter the amount and GST rate, then choose whether GST should be added on top of the amount or extracted from an amount that already includes GST. This tool is useful for bills, invoices, product pricing, and tax calculations.
Enter the amount before or including GST based on selected mode.
Common: 5, 12, 18, 28
Mode
Exclusive means GST will be added on top of amount.
Quick presets
Tax portion based on the selected GST mode.
Base amount excluding GST.
Final amount including GST.
Quick summary
Enter amount and GST rate to calculate GST, net amount, and total amount.
How to use
- Enter the amount.
- Enter the GST rate.
- Select Exclusive or Inclusive.
- Click Calculate to see GST, net and total.
Example
Amount: ₹1,000
GST Rate: 18%
Exclusive: GST = ₹180, Total = ₹1,180
Inclusive: GST included inside ₹1,000
Where can you use this GST Calculator?
Invoice & Billing
Calculate GST on products and services before issuing customer invoices or quotations.
Online Selling
Useful for ecommerce sellers who want to check selling price, tax amount, and final value quickly.
Business Pricing
Understand whether your entered price is GST inclusive or exclusive for better pricing clarity.
When to use this tool
Before creating an invoice
Check the GST portion and final bill amount before sending an invoice to a customer.
When checking MRP or selling price
Find out whether the entered amount already includes GST or if GST should be added separately.
For daily tax calculations
Useful for shop owners, sellers, freelancers, and service providers handling GST pricing often.
Frequently Asked Questions
What is a GST Calculator?
What is the difference between GST exclusive and GST inclusive?
Can this GST Calculator be used for common Indian GST rates?
Who can use this GST Calculator?
Does this GST Calculator work on mobile?
About this free online GST Calculator
A GST Calculator helps you quickly calculate Goods and Services Tax on a given amount. It is useful when you want to know the GST portion, the base value, and the final value after tax. This is especially important for sellers, shop owners, freelancers, and service providers who regularly prepare invoices, bills, price breakdowns, or tax-inclusive product pricing.
This calculator supports both GST exclusive and GST inclusive modes. In exclusive mode, GST is added on top of the entered amount. In inclusive mode, the GST amount is already included inside the entered value, and the calculator extracts the tax portion and net amount. This makes it practical for ecommerce listings, retail pricing, GST billing, and service quotations.
Many users need a fast way to work with common GST rates such as 5%, 12%, 18%, and 28%. Instead of calculating manually every time, this tool gives instant results and reduces mistakes. It is useful for daily business operations, accounting support, and even educational understanding of tax-inclusive versus tax-exclusive pricing.
You may also find our other finance tools useful, such as Percentage Calculator, EMI Calculator, Loan Calculator, Simple Interest Calculator, Compound Interest Calculator, and CAGR Calculator. These tools help with business calculations, interest, returns, and financial planning.