What is GST?
GST is a tax charged on many goods and services in India. Depending on the situation, you may need to add GST to a base price or work backwards from a GST-inclusive price.
Quick GST method
- To add GST, start with the base price.
- Convert the GST percentage to a decimal.
- Multiply the base price by the GST rate to find the tax amount.
- Add the tax to the base price for the GST-inclusive price.
How to calculate GST on a price
To calculate GST on a price, first find the GST amount and then add it to the original price.
For example, if the price is ₹10,000 and the GST rate is 5%, the GST amount is ₹500. The GST-inclusive price is ₹10,500.
What is the GST calculation formula?
The basic GST formula is simple:
GST amount = Original price × GST rate ÷ 100
Final price = Original price + GST amount
For example, ₹10,000 × 5 ÷ 100 = ₹500 GST. Therefore, the final price is ₹10,500.
How to calculate GST from a GST-inclusive price
If a price already includes GST and you want to find the original price, you need to remove the GST from the total price.
For example, if the GST-inclusive price is ₹10,500 and the GST rate is 5%, the original price is ₹10,000 and the GST amount is ₹500.
This is also called reverse GST calculation.
For quick calculations, enter your amount and GST rate in the GST calculator.
FAQ
How do I calculate GST on a price?
Multiply the original price by the GST rate and divide by 100. Add the GST amount to the original price to get the GST-inclusive price.
How do I calculate GST from the total price?
If the total price already includes GST, use reverse GST calculation to find the original price and GST amount.
How do I calculate GST manually?
Use the formula: GST amount = Original price × GST rate ÷ 100. Then add the GST amount to the original price.
Can I calculate GST manually?
Yes. For a quick result, use the GST rate and base price formula, or use the calculator to reduce manual work.
This guide is for general information. Calculator results are estimates based on the values you enter.