GST Related QNA Summarry

 As a fresher or commerce graduate, you may have several questions and doubts regarding GST compliance in India. To help you build a clear understanding of the subject, I have compiled a comprehensive list of frequently asked questions and answers for your reference. These Q&As are designed to simplify GST concepts and make learning easier.

All questions and answers are updated in line with the latest compliance requirements, and this list will be revised from time to time to reflect any changes in regulations.

Let’s begin with the Q&A section.

Question 1: What is GST and why was it introduced in India?

Answer: GST is an indirect tax applicable in India. Broadly, taxes in India are levied under two categories: Direct Tax and Indirect Tax.

Direct Tax is generally imposed on the income earned by an individual or business. For example, a salaried person pays tax on salary income as per the applicable income tax slab, while a business earning profits is also taxed under the income tax provisions.

On the other hand, Indirect Tax is imposed not on income, but on the supply of goods and services. GST falls under this category. It is levied on the sale or supply of goods and services within India. Businesses engaged in trading or providing services are required to collect GST from customers and deposit it with the government.

Now, if we discuss why GST was introduced in India, the answer lies in the tax structure that existed before July 2017. Prior to GST, India had multiple indirect taxes such as VAT, CST, Excise Duty, Service Tax, and several state-specific levies. Different goods attracted different taxes, services were taxed separately, and tax rules varied from state to state. This created a highly complex and fragmented taxation system.

To simplify this structure, the government planned to merge and replace these multiple indirect taxes with a single, unified tax system. As a result, Goods and Services Tax (GST) was introduced in July 2017.

The objective of GST was to create a uniform tax structure across the country, reduce complexities, and ensure smoother compliance for businesses. While GST follows the concept of “One Nation, One Tax,” a few other taxes still exist in certain sectors. However, GST now covers more than 95% of indirect taxation in India, making it the backbone of the country’s tax system.

Question 2: Which taxes are still applicable in India even after the introduction of GST?

Answer: Before the introduction of GST, India had a wide range of indirect taxes imposed by both the State Governments and the Central Government.

At the state level, one of the most significant taxes was VAT (Value Added Tax), which was levied on the sale of goods within a state. VAT served as a major source of revenue for state governments. However, one major drawback was that each state had its own VAT rules and rates, which created complexity for businesses operating across multiple states.

For the interstate sale of goods, CST (Central Sales Tax) was applicable. In addition, states also imposed other levies such as Local Body Tax, Octroi Duty, Entry Tax, and Purchase Tax.

At the central level, taxes such as Central Excise Duty (on manufacturing of goods), Service Tax (on services), and Customs Duty / Import Duty were charged.

With the introduction of GST in July 2017, most of these indirect taxes were subsumed into a single unified tax system. This significantly simplified the tax structure and reduced compliance burdens.

However, GST did not replace every tax. Certain taxes and levies are still applicable in India even today because some sectors and products remain outside the GST framework.

Taxes still applicable even after GST:

  • Customs Duty / Import Duty – applicable on imports into India
  • Excise Duty – still applicable on specific products such as petroleum and tobacco
  • VAT – continues on petroleum products and alcoholic liquor for human consumption
  • Electricity Duty – levied separately by state governments
  • Stamp Duty / Registration Charges – applicable on property registration and legal documents
  • Road Tax / Motor Vehicle Tax – charged on vehicles
  • Property Tax – levied by municipal authorities
  • Professional Tax – imposed by certain state governments

Why are these taxes still outside GST?

Certain goods and sectors were intentionally kept outside GST due to revenue considerations and policy decisions. For example:

  • Alcohol for human consumption remains fully outside GST.
  • Petroleum products such as petrol, diesel, crude oil, aviation turbine fuel, and natural gas are not yet fully under GST.
  • Electricity and real estate-related charges also continue under separate taxation systems.

So, while GST covers the majority of indirect taxation in India, a few important taxes continue to exist alongside it. This is why businesses and professionals must still be aware of these separate tax mechanisms even in the GST era.

Question 3: If GST is a single unified tax, then why are there CGST, SGST, and IGST?

Answer:
Although GST is often referred to as a single unified tax system, India has adopted a Dual GST Model. This model ensures that tax revenue is fairly shared between the Central Government and the State Governments.

Before GST, state governments earned revenue mainly through taxes such as VAT, while the central government collected taxes like Excise Duty and Service Tax. When GST was introduced, these multiple taxes were merged into one system. However, since both the Centre and the States needed to continue receiving their share of tax revenue, India implemented the dual structure of GST.

Under this system, GST collected on goods and services is distributed between the central and state governments based on the place of consumption.

To simplify:

  • If GST collected on a transaction is ₹1,000, the revenue is ultimately shared between the Centre and the State.
  • The structure in which it is collected depends on the nature of supply.

Why CGST, SGST, and IGST Exist

These terms are used to classify GST according to whether the transaction is within a state or between states.

1. CGST – Central Goods and Services Tax

This is the portion of GST that goes to the Central Government.

2. SGST – State Goods and Services Tax

This is the portion of GST that goes to the State Government where the goods or services are consumed.

3. IGST – Integrated Goods and Services Tax

This is levied on interstate transactions (when goods or services move from one state to another) and is later apportioned between the Centre and the destination state.


How It Works in Practice

Intrastate Supply (Within the Same State)

If goods or services are supplied within the same state, GST is split into CGST + SGST.

Example:
If GST on a transaction is ₹1,000:

  • ₹500 = CGST → paid to Central Government
  • ₹500 = SGST → paid to State Government

So, the total tax remains ₹1,000, but it is divided equally.


Interstate Supply (Between Two States)

If goods or services are supplied from one state to another, IGST is charged.

Example:
If GST on the transaction is ₹1,000:

  • ₹1,000 = IGST

This amount is first collected by the Central Government, and later the appropriate share is transferred to the consuming state.


Why This System Matters

The purpose of this structure is to ensure:

  • Fair revenue distribution between Centre and States
  • Smooth taxation of interstate trade
  • Uniformity in the GST framework across India

So, while GST is a unified tax system in principle, the classifications of CGST, SGST, and IGST exist to support India’s federal structure and ensure proper allocation of tax revenue.

 

Question 4: How can we determine which tax to charge on a supply? When should we charge CGST, SGST, or IGST?

Answer:
The determination of whether to charge CGST, SGST, or IGST depends entirely on two important factors under GST:

1.     Nature of Supply

2.     Place of Supply (POS)

Understanding these two concepts makes tax determination simple and practical.


1. Nature of Supply

Intrastate Supply

When the supply of goods or services takes place within the same state or union territory, it is treated as an intrastate supply.

Example:
Goods supplied from Mumbai to Pune — both locations are within Maharashtra.
Hence, this is an intrastate supply.


Interstate Supply

When the supply of goods or services takes place from one state/union territory to another, it is treated as an interstate supply.

Example:
Goods supplied from Mumbai (Maharashtra) to Jaipur (Rajasthan).
Since the supply crosses state boundaries, it is an interstate supply.


2. Place of Supply (POS)

Place of Supply refers to the location where the goods or services are considered to be supplied and consumed.

This concept is very important because GST follows the destination-based taxation principle, meaning tax revenue goes to the state where the goods/services are consumed.

Example:
If goods are sold from Maharashtra to Rajasthan, the Place of Supply is Rajasthan, because that is where the goods are delivered and consumed.


How to Determine Which Tax to Charge

Once the concepts of intrastate supply, interstate supply, and place of supply are clear, tax applicability becomes straightforward.


In Case of Intrastate Supply

Charge CGST + SGST

  • CGST = Central Government’s share
  • SGST = State Government’s share

Example:
If the GST rate is 18%, then:

  • 9% CGST
  • 9% SGST

Note:
If the supply is within a Union Territory, then SGST is replaced by UTGST.


In Case of Interstate Supply

Charge IGST only

  • The full tax is collected as IGST.

Example:
If the GST rate is 18%, then:

  • 18% IGST

Quick Rule to Remember

  • Same State = CGST + SGST / UTGST
  • Different States = IGST

Final Understanding

The correct GST type is not chosen randomly—it is determined through:

  • Where the supplier is located
  • Where the customer receives the goods/services
  • Whether the transaction stays within the state or crosses state boundaries

So, by identifying the nature of supply and the place of supply, you can accurately determine whether to charge CGST, SGST, or IGST under GST law.

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Question 5: Could you please explain GST applicability with an example?

Answer:
The best way to understand GST applicability is through practical examples. Let’s look at two common business scenarios to see how GST is charged depending on the nature of supply.


Example A – Intrastate Supply

Scenario:
ABC Enterprises in Mumbai supplies goods worth ₹10,000 to PQR Enterprises in Pune.
Applicable GST rate = 18%


Explanation:

In this case, both the supplier and the buyer are located in the same state — Maharashtra.

Therefore, this transaction is treated as an intrastate supply.

For intrastate supply, GST is divided into:

  • CGST = 9%
  • SGST = 9%

Tax Calculation:

  • 9% CGST on ₹10,000 = ₹900
  • 9% SGST on ₹10,000 = ₹900

Total GST = ₹1,800


Government Allocation:

  • ₹900 CGST → paid to the Central Government
  • ₹900 SGST → paid to the Maharashtra State Government


Example B – Interstate Supply

Scenario:
ABC Enterprises in Mumbai supplies goods worth ₹10,000 to MNP Enterprises in Jaipur, Rajasthan.
Applicable GST rate = 18%


Explanation:

Here, the supplier is in Maharashtra and the buyer is in Rajasthan.

Since the supply is made from one state to another, it is treated as an interstate supply.

For interstate supply, only IGST is charged.


Tax Calculation:

  • 18% IGST on ₹10,000 = ₹1,800

Government Allocation:

  • The full ₹1,800 is initially collected by the Central Government.
  • Later, the amount is apportioned between the Centre and the destination state.

Since the goods are delivered and consumed in Rajasthan, the state’s share is transferred to the Rajasthan Government, not Maharashtra.


Why This Is Important

This example highlights one of the core principles of GST:

GST is a Destination-Based Tax

This means tax revenue belongs to the state where goods or services are consumed, not where they are produced or sold.

That is why GST is also known as a consumption-based tax system.


Final Understanding

  • Same State Supply → CGST + SGST
  • Different State Supply → IGST

By identifying whether the transaction is intrastate or interstate, businesses can correctly determine GST applicability and tax structure.

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Question 6: Intrastate supply and interstate supply are clear, but what is Zero-Rated Supply under GST?

Answer:
Zero-Rated Supply under GST mainly refers to supplies made in relation to:

1.     Exports of goods or services, and

2.     Supplies made to SEZ units / SEZ developers (Special Economic Zones)

These supplies are called zero-rated because they are eligible for GST benefits even though the tax burden is intended to be nil.


What Does “Zero-Rated” Mean?

In simple terms, zero-rated supply means that the supply is taxable under GST law, but the effective tax rate is 0%.

This ensures that exports and SEZ supplies remain competitive and free from domestic tax burden.

Unlike exempt supplies, zero-rated supplies also allow the supplier to claim Input Tax Credit (ITC) on purchases used for making such supplies.


Example 1 – Export Supply

Suppose ABC Enterprises in India supplies goods to a buyer in Dubai, UAE.

Since the goods are supplied outside India, this transaction is treated as an export.

Under GST, exports are considered zero-rated supplies, meaning GST is not ultimately borne on such transactions.

This helps make Indian goods and services tax-free in the international market.


Example 2 – Supply to SEZ

If a supplier in India provides goods or services to a business located in a Special Economic Zone (SEZ), that transaction is also treated as a zero-rated supply.

Even if both parties are located in the same state, the transaction is considered an interstate supply under GST law.

That is why supplies to SEZ units are generally treated as interstate zero-rated supplies.


Why Is Zero-Rated Supply Important?

The objective is to ensure that exports and SEZ transactions remain free from domestic taxes, thereby promoting international trade and economic growth.


Methods of Making Zero-Rated Supply

A supplier can make zero-rated supplies in two ways:


1. Without Payment of Tax (Under LUT / Bond)

If the supplier has furnished a Letter of Undertaking (LUT) or Bond, they can supply goods/services without charging GST.

This is the most commonly used method.


2. With Payment of IGST

If the supplier has not opted for LUT / Bond, then GST must be paid first—usually as IGST—from the supplier’s own funds.

Later, the supplier can claim a refund of the tax paid.


Practical Example

Suppose ABC Enterprises in Mumbai supplies goods to an SEZ buyer also located in Mumbai.

Even though both are in the same state:

  • The supply is treated as interstate
  • It qualifies as zero-rated supply

If ABC Enterprises has LUT, no tax needs to be charged.

If ABC Enterprises does not have LUT, it must pay IGST first and later claim a refund.


Final Understanding

  • Exports = Zero-Rated Supply
  • Supply to SEZ = Zero-Rated Supply
  • Always treated as Interstate Supply
  • Eligible for ITC benefits
  • Can be supplied with or without payment of IGST

So, zero-rated supply is a special GST concept designed to ensure that exports and SEZ transactions remain tax-efficient while still preserving input tax benefits for businesses.

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More QNA will be updated soon...................

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