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CGST: Central Goods and Services Tax

By Athena Rebello

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Updated on: Mar 6th, 2025

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7 min read

The Central Goods and Services Tax (CGST) is an important part of India’s GST system, introduced on July 1, 2017. The GST law replaced several old indirect taxes from the central and state governments with one unified system. Let’s take a closer look at CGST, its key features, benefits, and calculation. 

What is CGST?

Beginning with the full form, CGST refers to Central Goods and Services Tax and is a type of indirect tax under Goods and Services Tax (GST) in India

CGST Applicability

CGST applies on intrastate transactions, i.e. on goods and services that are traded within the same state. On such transactions, the government collects both CGST and SGST (State Goods and Services Tax). The CGST revenues go to the Central Government, while the SGST revenues goes to the respective state government. 

CGST Rate Structure

CGST Rate

Applicable Items

0%Essential goods and services such as unprocessed cereals, fresh fruits and vegetables, fresh and chilled meat and fish, salt, bread (when not served for consumption), most healthcare services, etc.
5%Basic necessities such as edible oils, sugar, tea, coffee (except instant), domestic LPG, apparel and clothing not exceeding Rs.1000 per piece, electric vehicles, etc.
12%Goods and services such as butter, ghee, fruit juices, almonds, packed coconut water, geometry boxes, footwear not exceeding Rs.1000 per pair, etc.
18%Goods such as toothpaste, soaps, ice cream, chocolates, pasta, computer monitors not exceeding 32 inches, printers, most services, refrigerators, etc.
28%Goods such as luxury cars, high-end motorcycles, air conditioners, cigarettes, etc.
3%Precious metals such as gold and silver
0.25%Diamonds, precious and semi-precious stones

Note: You can find all the latest changes along with a detailed list here.

Features of CGST

  1. When you buy or sell something within the same state, CGST is the central government's part of the indirect tax applied to that transaction.
  2. The GST system lets you deduct the tax you have paid on purchases from the tax you owe on sales, preventing double taxation and lowering costs for everyone.
  3. The CGST law works on a self-assessment basis, where taxpayers determine the amount of tax liable to be paid to the government.
  4. However, the law contains provisions for CGST audits where necessary to ensure that businesses abide by the regulations in place.
  5. In cases of defaults, the CGST law allows the government to recover taxes through demand and recovery provisions.
  6. Fines and penalties are imposed on the delayed filing of returns or the late deposit of taxes, to name a few cases, to maintain strictness in the system.

CGST Rules 

Now that the features of CGST have been understood, we recommend that you also go through the CGST rules. These rules can be accessed from the official CBIC website: CGST Rules

The following table contains some of the important CGST rules. 

Rule Category

Rule Numbers

Description

Registration

8-26

These rules prescribe the terms and conditions for registration and authentication under the GST law.

Composition Scheme

3-7

These rules prescribe the terms that must be followed by small businesses opting to pay tax under the composition levy. 

Input Tax Credit (ITC)

36-45

These rules prescribe the guidelines for businesses to claim the GST paid on purchases as input tax credit.

Invoicing

48-55A

These rules prescribe the guidelines for issuing tax invoices and other similar documents under the GST law.

Returns Filing

59-82

These rules prescribe the manner and guidelines for filing GST returns.

Payments and Refunds

85-96C

These rules prescribe the manner of payments and refunds under the GST law.

Assessments and Audits 

98-116

These rules prescribe the manner of assessments, audits and appeals under the GST law. 

E-Way Bills

138-138F

These rules prescribe the terms and conditions for the generation of e-way bills under GST. 

Offenses and penalties

162-164

These rules prescribe the procedure for the compounding of offenses and the payment of penalties in case of non-compliance under the GST law.

Transition Rules

117

These rules prescribe the manner in which businesses can smoothly transition from the erstwhile tax laws to GST. 

How to Calculate CGST

Here is the formula to calculate CGST:

CGST = (Taxable value of goods or services × CGST rate) ÷ 100

  • Taxable value of goods or services: The base price on which tax is levied.
  • CGST rate: The percentage rate applicable for the goods/services.

Suppose you sell a product with a base price of ₹10,000, and the applicable GST rate is 18% (split into 9% CGST and 9% SGST).

  1. Taxable value: ₹10,000
  2. CGST = (₹10,000 × 9) ÷ 100 = ₹900
  3. SGST = (₹10,000 × 9) ÷ 100 = ₹900

Total Price = ₹10,000 + ₹900 (CGST) + ₹900 (SGST) = ₹11,800

Benefits of CGST

CGST has multiple benefits, such as: 

  • CGST replaces multiple central taxes with one, making compliance easier for businesses.
  • With the concept of input tax credit, you can deduct the taxes paid on purchases from the taxes owed on sales.
  • The completely digitised network under the GST law ensures that tax filing is simple and transparent for everyone.
  • Standardised rates across states create a level playing field for businesses.
  • A streamlined tax structure encourages compliance and supports national economic growth.

How Can Businesses Claim ITC on CGST Paid

The concept of Input Tax Credit (ITC) under the GST law helps reduce the tax liability of businesses. It involves the claiming of credit for the CGST paid on purchases at the time of discharging the tax liability on sales. Here’s a concise guide:

Eligibility for Input Tax Credit 

  1. GST registration: A valid GSTIN is required.
  2. Valid documents: The taxpayer must have a tax invoice or debit note.
  3. Eligibility conditions: The recipient must meet all input tax credit eligibility conditions under Section 16 of the CGST Act.
  4. Supplier compliance: The supplier must file their returns and pay remit the taxes collected to the government.
  5. Business use: The goods/services must be used for business purposes by the recipient.
  6. Excluded items: ITC cannot be claimed on personal expenses or blocked credits as per Section 17(5) of the CGST Act.

Steps to Claim ITC

  1. Reconcile ITC as per books with the GSTR-2B: Match purchase records as per books of accounts with the auto-generated GSTR-2B statement.
  2. File GSTR-3B: Declare eligible ITC for the tax period in the GSTR-3B return.
  3. Offset CGST liability: Use the ITC available for the tax period to reduce the CGST owed, and remit the remaining liability in cash.
  4. Maintain records: Keep all purchase invoices and proof of payments for audits.

Key Restrictions

  • Time limit: Claim ITC for a tax period before 30th November or the annual return filing date, whichever is earlier.
  • Proportionate credit: For mixed use (taxable and exempt supplies), claim ITC proportionally.

CGST Example

Let’s take the case of a retailer purchasing goods worth ₹1,00,000 and selling the same goods for ₹1,50,000 to a customer within the same state. Let’s understand how CGST works on this transaction.

  • Purchase price of goods: ₹1,00,000 (CGST @9% = ₹9,000).
  • Sale price of goods: ₹1,50,000 (CGST @9% = ₹13,500).
  • Input tax credit set off: ₹9,000 
  • Balance CGST liability payable in cash: ₹13,500 (output tax) - ₹9,000 (input tax) = ₹4,500.

Frequently Asked Questions

What is Rule 3 of CGST?

Rule 3 outlines the guidelines and procedure for opting into or out of the Composition Scheme, which allows small taxpayers to pay a fixed tax rate with simplified compliance.

What is the full form of CGST?

CGST stands for Central Goods and Services Tax.

What is the CGST percentage?

GST rates vary between 0%, 5%, 12%, 18%, and 28%, depending on the type of goods or services and excluding special rates. In the case of intrastate supplies, the CGST rate is half of the total GST rate. For example, if the GST rate is 18%, the CGST rate is 9%.

What is the formula of CGST?

CGST = (Taxable value × CGST rate) ÷ 100

How is CGST calculated?

CGST is calculated by applying the prescribed CGST rate to the taxable value of goods or services.

When is CGST payable?

CGST is payable at the time of filing the GST return for the relevant tax period.

What is Section 49 of CGST?

Section 49 of the CGST Act defines how businesses pay GST, interest, and penalties. Payments through net banking like NEFT/RTGS, debit/credit cards, etc. go into the electronic cash ledger, and GST credits from inward purchases go into the electronic credit ledger. Businesses use these balances to pay taxes, transfer amounts, or claim refunds as per rules.

About the Author

A Chartered Accountant by profession and a writer by passion, my expertise extends to creating insightful content on topics such as GST, accounts payable, and invoice discounting.. Read more

Clear offers taxation & financial solutions to individuals, businesses, organizations & chartered accountants in India. Clear serves 1.5+ Million happy customers, 20000+ CAs & tax experts & 10000+ businesses across India.

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