Chapter 1: Introduction to GST

The Goods and Services Tax (GST) is a comprehensive, destination-based indirect tax levied on the supply of goods and services. Implemented in India on 1 July 2017, it replaced multiple Central and State-level taxes that had existed for decades.

Before GST, India’s tax structure was fragmented, causing a cascading “tax-on-tax” effect, multiple filings, and inconsistent rates across States. GST was introduced to create a unified national market and simplify the indirect-tax framework under the motto “One Nation, One Tax, One Market.”

Objectives behind introduction:

Eliminate cascading of taxes.

Unify domestic trade by removing interstate barriers.

Simplify compliance through technology.

Enhance transparency and widen the tax base.

Strengthen cooperative federalism through the GST Council.

Before GST, both the Central Government and State Governments levied separate indirect taxes, resulting in overlapping jurisdiction and compliance burden.

Key issues in the old system:

Multiple tax authorities and returns.

No credit set-off between goods and services.

Cascading effect on pricing.

Complex rate structures and interpretations.

High logistics costs and check-post delays.

Core Objectives:

Simplification and Uniformity: Replace multiple taxes with one harmonised system.

Transparency: All transactions recorded through GSTN portal.

Competitiveness: Lower cost of production by allowing full Input Tax Credit (ITC).

Ease of Doing Business: Common registration and return filing nationwide.

Revenue Neutrality and Control: Broaden tax base and curb evasion.

Major Benefits:

Elimination of cascading tax burden.

Seamless flow of credit across goods and services.

Uniform tax rates across India.

Strengthened digital governance and data-driven compliance.

Boost to formal economy and exports.

GST is a dual tax structure where both Centre and States have authority to levy tax on the same transaction.

Illustration: If a dealer in Delhi sells goods worth ₹1,00,000 within Delhi at 18% GST: → 9% CGST (₹9,000) goes to Centre and 9% SGST (₹9,000) to Delhi Government.

If the same sale is to Mumbai, IGST @ 18% (₹18,000) is levied and collected by the Centre, which later shares the revenue with Maharashtra.