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May 15, 2026

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What Is IGST? Understanding Integrated GST in India

Goods and Services Tax (GST) changed how India collects indirect taxes. There were many taxes before GST. Like excise duty, VAT, and service tax before GST. Businesses faced a lot of confusion. It was because every state had different rules. GST brought everything under one system. GST has three main types. CGST, SGST, and IGST. Among these, IGST is important because it applies when goods or services move from one state to another. This article explains what IGST means, why it is needed, how it works & how it is different from CGST and SGST.

What is IGST?

IGST stands for Integrated Goods and Services Tax. It is a part of the GST system in India. IGST is charged when goods or services are supplied from one state to another. This is called an inter-state supply.

For example, if a company in Delhi sells goods to a buyer in Maharashtra then IGST will be applied. It is also charged on imports of goods and services into India. So whenever trade crosses state borders or international borders then IGST is involved.

Why was IGST introduced?

Before GST, interstate trade was very complicated. Sellers had to deal with CST (Central Sales Tax) and other state-level taxes. The system was not smooth. Businesses often end up paying tax on tax, also called the cascading effect.

With GST, the government wanted a single, transparent tax system. IGST was introduced to solve problems in inter-state trade. It made the process easier for both businesses and governments. Now when goods move between states, there is only one tax. That tax is IGST.

Also read: Inter-State Supply or Intra-State Supply Under GST Laws: A Comprehensive Guide.

How IGST works

To understand IGST, we need to understand how it is collected & shared. When a seller in one state sells to a buyer in another state. IGST is charged on the invoice. The buyer pays the total amount including IGST. The seller then deposits this IGST with the central government. Later, the central government shares the tax with the state where the goods or services are consumed. This is called the destination-based principle. It means the tax revenue goes to the state where the product is finally used, not where it was produced. IGST ensures fair distribution of tax between the centre and the states.

Example of IGST

A company in Gujarat sells goods worth ₹1,00,000 to a dealer in Karnataka. The IGST rate is 18%. IGST = ₹1,00,000 × 18% = ₹18,000. The buyer pays ₹1,18,000 in total. The seller gives ₹18,000 to the central government. Later, the central government sends a part of this ₹18,000 to Karnataka, because the goods are consumed there. This way the consuming state gets its share of revenue.

Input Tax Cedit under IGST

When a business pays IGST on purchases, it can use that tax as a credit. This is called Input Tax Credit (ITC). The business can adjust this credit against future tax liability.

For example

If a dealer pays IGST on buying goods from another state. Then sells those goods further, the dealer can use the IGST already paid to reduce the IGST that the dealer has to pay on sales. This avoids double taxation and reduces costs.

Difference between IGST, CGST and SGST

IGST is different from CGST and SGST. Let us understand the difference.

CGST (Central GST) is charged by the central govt on transactions within one state.

SGST (State GST) is charged by the state govt on the same transaction.

IGST (Integrated GST) is charged by the central government when transactions take place between two states.

Here is a simple table:

Tax Type	Applies to	Collected by	Revenue goes to
CGST	Within a state	Central govt	Central govt
SGST	Within a state	State govt	Same state govt
IGST	Between states and imports	Central govt	Shared between the centre and the consuming state

If goods are sold within the same state then both CGST and SGST apply. If goods cross state borders then only IGST applies.

IGST on imports and exports

Here is how IGST works for foreign trade.

Imports: When goods or services are imported into India, IGST is charged. The importer has to pay IGST in addition to customs duty. This ensures imported goods are taxed like domestic goods.

Exports: Exports are treated differently. They are called zero-rated supplies under GST. That means no IGST is charged on exports. Exporters can also claim a refund of the IGST they paid on inputs. This makes Indian goods more competitive in global markets.

Also read: Import and Export under GST.

Refunds in IGST

Sometimes businesses pay more IGST than required. In such cases, they can apply for a refund. Refunds are important in two cases:

When a business exports goods or services, it pays IGST.

When the input tax credit is higher than the output tax liability.

The GST law allows such refunds to ensure working capital is not blocked. This supports exporters and reduces the burden on businesses.

Benefits of IGST

IGST has many benefits for both the government and businesses.

It creates a uniform tax system for interstate trade.

It reduces confusion and simplifies compliance.

It removes the problem of double taxation.

It ensures fair sharing of revenue between states.

It helps businesses by allowing seamless input tax credit across states.

Challenges of IGST

There are still challenges. Even though IGST has made things better.

Small businesses sometimes find compliance difficult.

Refund processes, especially for exporters, can take time.

Proper coordination is required between the central and state governments.

These challenges are being worked on but they still exist.

Conclusion

IGST is one of the pillars of India’s GST system. It is applied to inter-state supplies and imports. The central government collects it and then shares it with the state where goods or services are consumed. The system helps create a common national market. It reduces tax-on-tax and makes interstate trade easier. Businesses can also benefit from input tax credit.

There are still some challenges in refunds and compliance. IGST has made India’s tax structure much simpler and more transparent. For anyone involved in trade across states or imports, understanding IGST is essential.

FAQs

1. What does IGST stand for?

IGST stands for Integrated Goods and Services Tax. It is part of the GST system. This tax is applied when goods or services are supplied from one state to another or when they are imported into India. IGST helps maintain a uniform tax system.

2. Who collects IGST in India?

IGST is collected by the central government. The central government later transfers a share of this tax to the state where the goods or services are finally consumed. Both the centre and the states get their fair share of tax revenue.

3. Does IGST apply to imports and exports?

Yes. IGST applies to imports of goods and services into India. This ensures imported goods are taxed the same way as goods produced within India. Exports are treated differently. They are considered zero-rated supplies under GST. This means no IGST is applied on exports. Exporters can claim a refund of IGST paid on their inputs which supports Indian exporters in global trade.

4. Can businesses claim input tax credit on IGST?

Yes. Businesses can claim Input Tax Credit (ITC) on IGST. This means that if a company has already paid IGST on its purchases, it can use that tax to reduce its IGST liability when it sells goods or services later. This avoids paying tax twice. It keeps costs lower for businesses.

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