GST Calculator for India

Add or remove GST on any amount. See CGST+SGST or IGST instantly for current slabs. Free, no login, built for invoices.

Enter the amount

CALCULATION

CGST @ 9%₹900.00
SGST @ 9%₹900.00
Taxable value₹10,000.00
Invoice total₹11,800.00

Intra-state sales split GST equally between CGST and SGST. Inter-state sales are charged as a single IGST amount.

Amount in words: Eleven Thousand Eight Hundred Rupees only

GST Calculator India

Calculate GST online with the free FindAllTools GST Calculator. Enter an amount and GST rate to calculate the GST amount, taxable value, and final invoice total. You can calculate GST for both GST-exclusive and GST-inclusive amounts.

The calculator also shows CGST and SGST for intra-state transactions or IGST for inter-state transactions. It supports different GST rates and can round the final invoice amount to the nearest rupee.

How to Calculate GST

To calculate GST on an amount before tax, multiply the taxable amount by the GST rate and divide the result by 100.

GST = Taxable Amount × GST Rate ÷ 100

Add the calculated GST to the taxable amount to get the final invoice value.

Invoice Total = Taxable Amount + GST

How to Use the GST Calculator

  1. Enter the amount you want to calculate GST on.
  2. Enter the applicable GST rate, such as 5%, 12%, 18%, or 28%.
  3. Select GST Exclusive if the amount does not include GST, or GST Inclusive if GST is already included.
  4. Select Inter-state sale (IGST) when the transaction requires IGST.
  5. Enable rounding if you want the invoice total rounded to the nearest rupee.
  6. View the calculated GST, taxable value, and invoice total.

GST Exclusive Calculator

A GST-exclusive amount is an amount before GST is added. For example, if the taxable value is ₹10,000 and the GST rate is 18%, the GST amount is ₹1,800 and the invoice total is ₹11,800.

Select GST Exclusive in the calculator when you want to add GST to a base amount.

GST Inclusive Calculator

A GST-inclusive amount already contains GST. The calculator can extract the GST component and show the original taxable value.

Taxable Value = Inclusive Amount ÷ (1 + GST Rate ÷ 100)

For example, if the total amount is ₹11,800 and the GST rate is 18%, the taxable value is ₹10,000 and the GST component is ₹1,800.

CGST and SGST Calculation

For an intra-state transaction, GST is generally divided equally between CGST and SGST. For an 18% GST rate, the calculation is generally 9% CGST and 9% SGST.

GST RateCGSTSGST
5%2.5%2.5%
12%6%6%
18%9%9%
28%14%14%

IGST Calculation

IGST, or Integrated Goods and Services Tax, is generally applicable to inter-state supplies. When the Inter-state sale option is selected, the calculator displays the complete GST amount as IGST instead of splitting it into CGST and SGST.

GST Calculation Example

Suppose the taxable amount is ₹25,000 and the GST rate is 18%. The GST calculation is:

Taxable value: ₹25,000
GST at 18%: ₹4,500
Invoice total: ₹29,500

For an intra-state transaction, the ₹4,500 GST would generally be split into ₹2,250 CGST and ₹2,250 SGST. For an inter-state transaction, the same tax amount would be shown as IGST.

Common GST Rates

Different goods and services can be subject to different GST rates. Commonly encountered rates include 5%, 12%, 18%, and 28%, depending on the applicable classification and rules.

Always use the GST rate applicable to the specific goods or services being supplied rather than assuming a particular rate.

GST Calculator for Invoices

The GST calculator can be useful when preparing or checking invoices. It shows the taxable value, GST component, and final invoice total so you can quickly verify the arithmetic before entering the figures into an invoice.

You can also copy the complete GST calculation, including the GST rate, taxable value, tax amount, total, and amount in words.

Frequently Asked Questions

What is a GST calculator?

A GST calculator is an online tool that calculates the GST amount and final invoice value from a taxable amount and GST rate. It can calculate GST-exclusive and GST-inclusive amounts and show the applicable CGST, SGST, or IGST components.

How do I calculate GST on an amount?

To calculate GST on a GST-exclusive amount, multiply the taxable amount by the GST rate and divide by 100. The GST amount is then added to the taxable amount to calculate the final invoice total.

How do I add GST to an amount?

Enter the amount before GST, enter the applicable GST rate, and select GST Exclusive. The calculator will calculate the GST amount and add it to the taxable value to show the invoice total.

How do I remove GST from an amount?

Enter the GST-inclusive amount, enter the GST rate, and select GST Inclusive. The calculator divides the total by 1 plus the GST rate divided by 100 to determine the pre-tax value and extracted GST.

What is the formula for GST inclusive calculation?

The taxable value of a GST-inclusive amount is calculated as Inclusive Amount ÷ (1 + GST Rate ÷ 100). The GST amount is the difference between the inclusive amount and the taxable value.

What is CGST and SGST?

CGST is the Central Goods and Services Tax component and SGST is the State Goods and Services Tax component. For an intra-state transaction, the GST amount is generally split equally between CGST and SGST.

What is IGST?

IGST stands for Integrated Goods and Services Tax. It is generally used for inter-state supplies and is calculated as a single integrated GST component.

How is 18% GST split between CGST and SGST?

For an intra-state transaction with an 18% GST rate, the GST is generally split equally as 9% CGST and 9% SGST.

Can I calculate GST for different GST rates?

Yes. You can enter the GST rate applicable to your transaction. The calculator supports GST rates from 0% to 100%, including decimal rates.

What does GST exclusive mean?

GST exclusive means the amount entered does not include GST. The calculator treats the entered amount as the taxable value and adds GST to calculate the final invoice amount.

What does GST inclusive mean?

GST inclusive means the amount entered already includes GST. The calculator extracts the GST component and calculates the underlying taxable value.

Can I calculate IGST using this GST calculator?

Yes. Enable the Inter-state sale option to calculate the GST as IGST instead of splitting the GST amount into CGST and SGST.

Can I calculate CGST and SGST separately?

Yes. For an intra-state transaction, the calculator splits the total GST equally between CGST and SGST and displays both amounts separately.

Does the GST calculator round the invoice total?

Yes. You can enable the Round off to nearest rupee option. When enabled, the final invoice total is rounded to the nearest rupee.

Is this GST calculator free?

Yes. The GST Calculator is free to use and does not require software installation.

Note: GST rates and tax treatment can vary depending on the goods or services and the applicable rules. This calculator performs the mathematical GST calculation based on the rate you enter and is not a substitute for professional tax advice.