What is GST? A Complete Beginner's Guide

Introduction to GST in India

The Goods and Services Tax (GST) is India's comprehensive indirect tax that replaced multiple central and state taxes on July 1, 2017. Often described as India's biggest tax reform since independence, GST unified the country into a single common market by eliminating the cascading effect of tax-on-tax that existed under the previous regime.

GST is a destination-based consumption tax—meaning the tax is collected by the state where the goods or services are consumed, not where they are produced. This fundamental shift has streamlined supply chains, reduced tax complexity, and improved compliance across the country.

India's Tax System Before GST

Before GST, businesses had to deal with a complex web of indirect taxes:

This multi-layered system led to tax cascading, compliance burden, and inter-state trade barriers. GST replaced all these taxes with a single, unified tax framework.

GST Structure: CGST, SGST, and IGST

GST in India operates on a dual model, where both the Central and State Governments levy tax simultaneously. The three components are:

• CGST (Central GST): Collected by the Central Government on intra-state supplies (within the same state).
• SGST (State GST): Collected by the State Government on intra-state supplies.
• IGST (Integrated GST): Collected by the Central Government on inter-state supplies (between two different states) and imports.

For example, if a product attracts 18% GST and is sold within the same state, the tax splits into 9% CGST and 9% SGST. If sold inter-state, the entire 18% is collected as IGST.

GST Tax Slabs

GST categorises goods and services into five tax slabs:

Additionally, a GST Compensation Cess applies on certain luxury and sin goods (like cars, tobacco, and aerated drinks) over and above the 28% slab.

Who Must Register for GST?

GST registration is mandatory for the following:

• Businesses with annual turnover exceeding ₹40 lakh (₹20 lakh for special category states) for goods.
• Service providers with annual turnover exceeding ₹20 lakh (₹10 lakh for special category states).
• Inter-state suppliers (regardless of turnover).
• E-commerce operators and sellers on e-commerce platforms.
• Casual taxable persons making occasional supplies.
• Persons required to deduct TDS/TCS under GST.
• Input Service Distributors (ISD).

GST Registration Process

The registration process is entirely online through the GST portal:

1. Visit www.gst.gov.in and click on "Register Now" under the Taxpayers section.
2. Fill Part A with PAN, mobile number, and email. Verify via OTP.
3. You will receive a Temporary Reference Number (TRN).
4. Log in with TRN and complete Part B with business details, promoter/partner details, authorised signatory, principal place of business, and bank account details.
5. Upload required documents (PAN, Aadhaar, address proof, photos, bank statement).
6. Submit using DSC or EVC (Electronic Verification Code).
7. The application is processed within 3-7 working days, and the GSTIN is issued.

Input Tax Credit (ITC)

One of the biggest advantages of GST is the Input Tax Credit mechanism. ITC allows businesses to claim credit for the GST paid on inputs (purchases) against the GST liability on outputs (sales). This eliminates the cascading effect of tax-on-tax.

To claim ITC, the following conditions must be met:

• You must have a valid tax invoice from the supplier.
• The supplier must have filed their GST return and paid the tax.
• You must have received the goods or services.
• The ITC must be claimed within the prescribed time limit.

GST Returns Overview

Key Benefits of GST

• Elimination of cascading taxes: Tax-on-tax effect is removed through ITC.
• Unified national market: Seamless inter-state trade without entry taxes or checkpoints.
• Simplified compliance: Single return filing replaces multiple state and central filings.
• Increased tax base: Brings more businesses into the formal tax net.
• Transparency: Digital processes reduce corruption and tax evasion.
• Boost to GDP: Economists estimate GST adds 1-2% to India's GDP growth.

How The Ledger Company Can Help

Whether you're a startup registering for GST for the first time or an established business managing complex GST compliance, The Ledger Company is your trusted partner. Our team of GST experts handles everything—from registration and return filing to ITC reconciliation and GST audits. We ensure your business stays compliant while you focus on growth. Contact The Ledger Company today for hassle-free GST compliance.