Goods and Services Tax (GST) is a comprehensive, multi-stage, destination-based indirect tax that is levied on every value addition in the supply chain. Introduced in India on 1st July 2017, GST replaced a complex system of central and state indirect taxes including VAT, service tax, central excise, and several others.
The Structure of GST in India
- CGST (Central Goods and Services Tax): Collected by the Central Government on intra-state supplies
- SGST (State Goods and Services Tax): Collected by the State Government on intra-state supplies
- IGST (Integrated Goods and Services Tax): Collected by the Central Government on inter-state supplies and imports
- UTGST (Union Territory Goods and Services Tax): Applicable to union territories without a legislature
GST Rate Slabs in India
| GST Rate | Category | Examples |
|---|---|---|
| 0% (Exempt) | Essential goods and services | Fresh vegetables, milk, eggs, education, healthcare |
| 5% | Basic necessities and mass consumption | Packed food items, economy class air travel, life-saving drugs |
| 12% | Standard goods and services | Computers, processed food, business class air travel, hotels (Rs. 1001 to Rs. 7500 per night) |
| 18% | Most goods and services | IT services, consulting, restaurants, electronics, telecom |
| 28% | Luxury and sin goods | Luxury cars, tobacco products, cement, large air conditioners, casinos |
How GST Works – The Input Tax Credit Mechanism
One of the most significant features of GST is the seamless flow of Input Tax Credit (ITC) across the supply chain. Each registered business can claim credit for the GST paid on its purchases and set it off against its output GST liability.
- Manufacturer pays GST on raw materials and claims ITC
- Manufacturer charges GST when selling to wholesaler; pays only the net GST after deducting ITC
- Wholesaler charges GST when selling to retailer; claims ITC on purchases
- Retailer charges GST on the final sale to the consumer; claims ITC on purchases
- Only the final consumer bears the actual GST burden with no further ITC available
GST Registration Threshold
| Supplier Type | Threshold (Normal States) | Threshold (Special Category States) |
|---|---|---|
| Goods supplier | Rs. 40 lakhs | Rs. 20 lakhs |
| Service provider | Rs. 20 lakhs | Rs. 10 lakhs |
| Interstate supplier | Mandatory regardless of turnover | Mandatory regardless of turnover |
| E-commerce operator/seller | Mandatory regardless of turnover | Mandatory regardless of turnover |
GST Returns Overview
- GSTR-1: Details of outward supplies, filed monthly (by 11th) or quarterly under QRMP scheme
- GSTR-3B: Summary return with tax payment, filed monthly (by 20th) or quarterly
- GSTR-9: Annual return summarising all transactions for the year
- GSTR-9C: Reconciliation statement and audit report for taxpayers with turnover above Rs. 5 crore
Benefits of GST
- Elimination of cascading effect of taxes (tax on tax)
- Uniform tax structure across India replacing multiple central and state taxes
- Simplified compliance through a single online portal (GSTN)
- Seamless ITC flow reducing the cost of goods and services
- Improved transparency and reduced corruption in the tax system
- Ease of doing business through a single registration valid across all business activities
Frequently Asked Questions
What is the GSTIN?
GSTIN (Goods and Services Tax Identification Number) is a unique 15-digit alphanumeric number assigned to every registered taxpayer. The first two digits represent the state code, the next 10 are the PAN, the 13th is the entity number for the same PAN in a state, the 14th is a default letter Z, and the 15th is a check digit.
What is the Composition Scheme under GST?
The Composition Scheme is an option for small taxpayers with turnover up to Rs. 1.5 crore (Rs. 75 lakhs for some states) to pay GST at a lower flat rate and file quarterly returns. Composition dealers cannot claim ITC and cannot make interstate supplies.
What is Reverse Charge Mechanism (RCM) under GST?
Under the Reverse Charge Mechanism, the liability to pay tax shifts from the supplier to the recipient of goods or services. RCM applies to specific categories notified by the government, such as legal services received from an advocate, or goods and services received from an unregistered supplier under certain conditions.
Also See
Frequently Asked Questions About GST: A Complete Guide
India’s most-asked GST questions answered in plain language — by Dealintax’s GST specialists.
When was GST introduced in India and why?
GST (Goods and Services Tax) was introduced in India on 1 July 2017, replacing a fragmented system of 17 different central and state taxes including VAT, Service Tax, Central Excise Duty, and CST. The primary reason for introducing GST was to create a single, unified national market by eliminating the cascading effect of multiple taxes (tax on tax). GST is governed by the GST Council, chaired by the Union Finance Minister, with all state Finance Ministers as members. The constitutional amendment enabling GST was the 101st Amendment to the Constitution of India.
What is the difference between CGST, SGST, and IGST?
CGST (Central GST) and SGST (State GST) are levied together on intra-state transactions (sales within the same state). Both are charged at half the total GST rate — so an 18% GST transaction means 9% CGST + 9% SGST. IGST (Integrated GST) is levied on inter-state transactions (sales from one state to another) and on imports. Only IGST applies to inter-state sales — not both CGST and SGST. IGST is collected by the central government and then apportioned between the centre and the destination state.
What is a GSTIN and how do I get one?
A GSTIN (Goods and Services Tax Identification Number) is a unique 15-digit alphanumeric code assigned to every GST-registered entity in India. The structure is: 2-digit state code + 10-digit PAN + 1-digit entity number + 1-digit blank + 1-digit check digit. You receive your GSTIN automatically upon successful GST registration. The GSTIN must appear on all tax invoices issued by your business. To obtain a GSTIN, apply for GST registration on the GST portal (gst.gov.in) or through Dealintax’s CA-assisted registration service.
What is the reverse charge mechanism (RCM) under GST?
Under the normal GST mechanism, the supplier pays GST to the government. Under the Reverse Charge Mechanism (RCM), the liability to pay GST shifts from the supplier to the recipient of goods or services. RCM applies in situations specified by the government, such as: purchase of goods or services from an unregistered supplier by a registered business (Section 9(4)), purchase of specific services listed in Section 9(3) like legal services from an advocate, goods transport agency (GTA) services, and import of services. Businesses subject to RCM must pay GST directly to the government and can then claim the same as Input Tax Credit.
What is the GST annual return (GSTR-9) and who must file it?
GSTR-9 is the annual GST return that consolidates all the monthly/quarterly returns filed during the financial year. It is due by December 31 of the subsequent year — for FY 2024-25, GSTR-9 is due by December 31, 2025. Every GST-registered business with an annual aggregate turnover above ₹2 crore must file GSTR-9. Businesses with turnover below ₹2 crore have the option to file or skip. A reconciliation statement in GSTR-9C (certified by a Chartered Accountant) is required for businesses with turnover above ₹5 crore.
Can a business voluntarily cancel its GST registration?
Yes — a GST-registered business can apply for voluntary cancellation of registration if: turnover has permanently dropped below the registration threshold (₹20 lakh), the business has been discontinued or transferred, or the business constitution has changed requiring fresh registration. The application is made in Form GST REG-16 on the GST portal. The officer issues a cancellation order in Form GST REG-19. After cancellation, the business must file a final return (GSTR-10) within 3 months. Any ITC on stock in hand at the time of cancellation must be reversed.
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