Calculate GST Online Instantly

Simplify GST calculations with instant GST-inclusive,
GST-exclusive, CGST, SGST, and IGST results

INV-2026-##

Taxable Value:

₹ 0

IGST:

₹ 0

CGST:

₹ 0

SGST/UTGST:

₹ 0

Your gross price will be

0

gstin-image

What is a GST Calculator?

A GST Calculator helps businesses and individuals calculate GST amounts instantly for GST-inclusive and GST-exclusive prices. It simplifies CGST, SGST, and IGST calculations for invoices, purchases, and tax compliance.

GST Calculation Formula

Exclusive

GST Exclusive Formula

GST Amount =

(Taxable Value × GST Rate) ÷ 100

Final Amount =

Taxable Value + GST Amount

Inclusive

GST Inclusive Formula

Taxable Value =

Inclusive Price ÷ (1 + GST Rate / 100)

GST Calculation Examples

EXCLUSIVE · 18% EX 01

Standard slab — Example 1

Original Amount

₹1,000

GST Rate

18%

GST Amount

₹180

Final Amount

₹1,180

INCLUSIVE · 18% EX 02

Reverse calc — Example 2

Inclusive Price

₹1,180

GST Rate

18%

Taxable Value

₹1,000

GST Amount

₹180

EXCLUSIVE · 28% EX 03

Top slab — Example 3

Amount

₹10,000

GST Rate

5%

GST Amount

₹500

Final Amount

₹10,500

Understanding CGST, SGST and IGST

Tax Type Applicable On Collected By
CGST Intra-state Central Govt
SGST Intra-state State Govt
IGST Inter-state Central Govt

What are GST rates & why they matter?

From 22nd September 2025, GST has been simplified into two slabs – 5% and 18% – with a special 0% rate for essentials and a 40% rate for luxury and sin goods.
GST Rates Supported by the Calculator are:

0%

This rate still applies to fundamental essentials, such as some fresh food items.
Apple icon

5%

Now covers many everyday essentials such as packaged food, soaps, medicines, toothpaste, milk products, and even life & health insurance (now fully GST-exempt).
Truck icon

18%

Applies to standard goods and services, including appliances, TVs, cement, and small cars (previously at higher rates).
TV icon

40%

Introduced for “sin goods” and luxury items, such as tobacco, cigarettes, and high-end cars. The previous 28% slab is removed for these goods.
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How to Use the GST Calculator Online for Accurate Tax Calculations?

Calculating GST is a breeze with our user-friendly GST calculator. Just follow these simple steps:

1

Enter the price of the goods or services in the amount field and choose whether it's "Inclusive" or "Exclusive" of GST.

2

Choose the applicable GST slab based on your service provided.

3

Select the appropriate "Supply type" for your transaction.

4

Hit the "Calculate" button to instantly get your GST calculation.

Benefits of Using the GST Calculator for CGST and SGST Calculations

Ensures accurate GST calculations and ITC alignment
Reduces manual errors and misclassifications
Saves time during billing with instant code suggestions
Applies the correct GST rate automatically for every item
Makes invoices more professional and compliant
Simplifies price breakdown for customers, whether GST is included or added
Useful for high-volume catalogs and cross-border trade

Different Tax Components under GST

CGST (Central Goods and Services Tax)

Levied by the central government on intrastate transactions, CGST applies to the supply of goods and services within state boundaries.

SGST (State Goods and Services Tax)

Similar to CGST but imposed by state governments on intrastate transactions. Revenue from SGST is collected by the respective states.

UTGST (Union Territory Goods and Services Tax)

Applicable to transactions within union territories, UTGST is collected by the respective union territory governments, functioning similarly to SGST.

IGST (Integrated Goods and Services Tax)

Levied on interstate transactions, IGST is collected by the central government and distributed to the states, ensuring seamless tax credit flow and preventing double taxation.

ABC LTD
Item Qty. Price

Total Price ₹80,000

GST

CGST 2.5% ₹2,000

SGST/UTGST 2.5% ₹2,000


Your gross price will be ₹84,000

How the GST Calculator Helps in Understanding GST Calculation with an Example

A manufacturer produces electronic components (18% tax rate applicable) worth ₹2,000 and sends them to a logistics company for distribution. The logistics company adds ₹500 to the existing value for handling and distribution. Then, it is sold to a retailer who adds a marketing expense of ₹400.

Here's how the value of the goods and tax on it changes, and the final effect on the price under GST:

Particulars Cost Tax @18% Tax Liability to be deposited to the Government Invoice Total
Manufacturer ₹2,000 ₹360 ₹360 ₹2,360
Logistics company adds ₹500 for distribution ₹2,500 ₹450 ₹90 ₹2,950
Marketing expense of ₹400 added by the retailer ₹2,900 ₹522 ₹72 ₹3,422
Total ₹2,900 ₹1,332 ₹522 ₹3,422
Final Price to Consumer: ₹3,422

This example illustrates how GST is calculated at each step of the supply chain and how the tax liability is adjusted using input tax credit, ensuring transparency and fairness in the tax system.

Go Beyond Simple GST Calculation: Discover the Advanced Online GST Calculator

Features Free Online GST Calculator TallyPrime for GST
Ease of Use
GST Compliance
Invoice Generation
Return Filing Assistance
Tax Tracking
Reporting and Analytics
Integration with Business Systems
Cost

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Frequently Asked Questions (FAQs)

What is a GST Calculator? Toggle FAQ

A GST Calculator is an online tool that helps businesses and individuals calculate GST amounts quickly. It can determine GST-inclusive and GST-exclusive prices and calculate CGST, SGST, and IGST based on the applicable GST rate.

How do I calculate GST manually? Toggle FAQ

To calculate GST manually, multiply the taxable value by the applicable GST rate and divide the result by 100.

Formula:
GST Amount = (Taxable Value × GST Rate) ÷ 100

For example, if the taxable value is ₹1,000 and the GST rate is 18%, the GST amount will be ₹180.

What is the GST calculation formula? Toggle FAQ

The GST formula depends on whether the amount is GST-exclusive or GST-inclusive.

GST Exclusive Formula
GST Amount = (Amount × GST Rate) ÷ 100
Final Amount = Amount + GST Amount

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

How do I calculate GST on an inclusive amount? Toggle FAQ

To calculate GST on an inclusive amount, first determine the taxable value by removing the GST component from the total price.

For example, if the total amount is ₹1,180 including 18% GST:

  • Taxable Value = ₹1,000
  • GST Amount = ₹180

A GST Calculator can perform this calculation instantly.

How do I calculate GST on an exclusive amount? Toggle FAQ

For GST-exclusive pricing, calculate the GST amount separately and add it to the original value.

For example:

  • Original Amount = ₹1,000
  • GST Rate = 18%
  • GST Amount = ₹180
  • Total Amount = ₹1,180
What is 18% GST on ₹1,000? Toggle FAQ

The GST amount on ₹1,000 at 18% is ₹180.

Calculation:
GST Amount = ₹1,000 × 18 ÷ 100
GST Amount = ₹180
Total Amount = ₹1,180

How are CGST and SGST calculated? Toggle FAQ

For intra-state transactions, GST is divided equally between CGST and SGST.

For example, if GST is charged at 18%:

  • CGST = 9%
  • SGST = 9%

On a taxable value of ₹1,000:

  • CGST = ₹90
  • SGST = ₹90
  • Total GST = ₹180
How is IGST calculated? Toggle FAQ

IGST applies to inter-state transactions and is charged as a single tax.

For example, if the GST rate is 18% on a transaction value of ₹1,000:

  • IGST = ₹180

The entire amount is collected as Integrated GST.

What GST rates are supported by the calculator? Toggle FAQ

The GST Calculator supports all commonly applicable GST rates, including 5%, 18%, 28%, and 40% as well as any custom GST rate required for calculation purposes.

Why should businesses use a GST Calculator? Toggle FAQ

A GST Calculator helps businesses calculate GST accurately, reduce manual errors, prepare invoices faster, and understand the GST component in transactions. It is useful for businesses, accountants, tax professionals, and anyone dealing with GST-compliant invoicing.

Can I use a GST Calculator for invoices? Toggle FAQ

Yes. A GST Calculator can help determine the GST amount and final invoice value before generating a tax invoice. It simplifies GST calculations for sales, purchases, and billing activities.

What is the difference between GST-inclusive and GST-exclusive pricing? Toggle FAQ

GST-inclusive pricing means the GST amount is already included in the displayed price. GST-exclusive pricing means GST is calculated separately and added to the base amount.

For example:

  • GST-inclusive amount: ₹1,180 (includes GST)
  • GST-exclusive amount: ₹1,000 + ₹180 GST = ₹1,180