Chapter 1: GST Basics & Registration

Foundation of Goods and Services Tax System

📅 Duration: Days 1–5 📚 Level: Foundation ⏱️ Estimated Time: 20-25 hours

Learning Objectives

✓ Understand the fundamental concepts of GST and its constitutional framework
✓ Master the tax flow logic (CGST/SGST/IGST mechanisms) with real-world scenarios
✓ Comprehend supply concept, taxable events, and place of supply rules
✓ Learn GST rates structure, exemptions, and their practical applications
✓ Complete understanding of registration process, REG-01 form, and documentation
✓ Analyze business schemes (regular vs composition) with decision-making frameworks

1.1 Introduction to GST: Constitutional Framework
1.2 Tax Flow Logic: CGST, SGST, and IGST Mechanisms
1.3 Supply Concept: Goods vs Services
1.4 Taxable Events and Time of Supply
1.5 Place of Supply Rules
1.6 GST Rates Structure and Exemptions
1.7 Registration Eligibility and Process
1.8 REG-01 Form Structure and Documentation
1.9 Business Schemes: Regular vs Composition
1.10 Real-World Case Studies and Practice

1.1 Introduction to GST: Constitutional Framework

Historical Background

The Goods and Services Tax (GST) was introduced in India on July 1, 2017, replacing multiple indirect taxes like VAT, Service Tax, Excise Duty, and others. This unified tax system was implemented through the 101st Constitutional Amendment Act, 2016, which gave both the Central and State governments concurrent powers to levy and collect GST.

Key Constitutional Provisions:

Article 246A: Grants power to Parliament and State Legislatures to make laws on GST
Article 269A: Provides for levy and collection of IGST on inter-state supplies
Article 279A: Establishes the GST Council for making recommendations

GST Structure in India

CGST

Central Goods and Services Tax - Levied by Central Government on intra-state supplies

SGST

State Goods and Services Tax - Levied by State Government on intra-state supplies

IGST

Integrated Goods and Services Tax - Levied by Central Government on inter-state supplies

Real-World Application

Case Study: Manufacturing Company

ABC Manufacturing Ltd., located in Maharashtra, sells goods worth ₹1,00,000 to a customer in the same state. The GST rate is 18%. Here, both CGST (9%) and SGST (9%) will be applicable, totaling ₹18,000. The Maharashtra government receives ₹9,000 as SGST, while the Central government receives ₹9,000 as CGST.

1.2 Tax Flow Logic: CGST, SGST, and IGST Mechanisms

Intra-State Supply (CGST + SGST)

When goods or services are supplied within the same state, both CGST and SGST are levied. The tax is split equally between the Central and State governments.

Example Calculation:

Scenario: Seller in Maharashtra sells to buyer in Maharashtra

Invoice Value: ₹1,00,000

GST Rate: 18%

Tax Breakdown:

CGST (9%): ₹9,000 → Goes to Central Government

SGST (9%): ₹9,000 → Goes to Maharashtra Government

Total GST: ₹18,000

Total Invoice Value: ₹1,18,000

Inter-State Supply (IGST)

When goods or services are supplied between different states, only IGST is levied. The IGST is collected by the Central Government and later apportioned between the states.

Example Calculation:

Scenario: Seller in Maharashtra sells to buyer in Karnataka

Invoice Value: ₹1,00,000

GST Rate: 18%

Tax Breakdown:

IGST (18%): ₹18,000 → Collected by Central Government

Note: Central Government later distributes this between Maharashtra (origin) and Karnataka (destination) states

Total Invoice Value: ₹1,18,000

Tax Flow Diagram

Tax Flow Diagram Image

Placeholder for visual diagram showing:

• Intra-State: Seller → CGST + SGST → Central & State Govts

• Inter-State: Seller → IGST → Central Govt → Apportionment

[Image: Tax Flow Diagram showing CGST/SGST/IGST mechanisms]

Deep Dive: Tax Collection Mechanism

The tax collection mechanism under GST follows a destination-based principle. This means tax is collected at the point of consumption rather than production. The revenue goes to the state where the goods/services are consumed, ensuring fair distribution of tax revenue among states.

Key Principles:

Destination Principle: Tax collected where goods/services are consumed
Dual Levy: Both Centre and State can levy tax on same transaction
Input Tax Credit: Tax paid on inputs can be set off against output tax
Seamless Credit: ITC flows smoothly across supply chain

1.3 Supply Concept: Goods vs Services

Definition of Supply

Under GST, "supply" is the most fundamental concept. As per Section 7 of the CGST Act, 2017, supply includes all forms of supply of goods or services or both, made or agreed to be made for a consideration in the course or furtherance of business.

Essential Elements of Supply:

There must be supply of goods or services or both
Supply must be made for a consideration
Supply must be made in the course or furtherance of business
Supply must be made by a taxable person

Goods vs Services Classification

Aspect	Goods	Services
Nature	Tangible, movable property	Intangible, cannot be touched
Transfer	Ownership can be transferred	Cannot be transferred, only consumed
Storage	Can be stored	Cannot be stored
HSN Code	Uses HSN (Harmonized System of Nomenclature)	Uses SAC (Services Accounting Code)

Real-World Classification Challenges

Case Study: Software Supply

Scenario: A company sells software. Is it goods or services?

Software on CD/USB: Treated as Goods (tangible medium)
Downloaded Software: Treated as Services (intangible)
Cloud-based Software (SaaS): Treated as Services

1.4 Taxable Events and Time of Supply

Understanding Taxable Event

Under GST, the taxable event is "supply" of goods or services. This is different from the earlier tax regime where different events like manufacture, sale, provision of service triggered tax. The time of supply determines when the liability to pay tax arises.

Time of Supply for Goods (Section 12):

Normal Case: Earlier of date of invoice OR date of payment OR date of removal
Continuous Supply: Date of each statement/payment (whichever is earlier)
Goods Sent on Approval: Date when buyer accepts or 6 months (whichever is earlier)

Time of Supply for Services (Section 13):

Normal Case: Earlier of date of invoice OR date of payment
Continuous Supply: Date of each statement/payment (whichever is earlier)
Voucher-based: Date of redemption of voucher

Real-World Example: Time of Supply

Scenario:

Invoice Date: 15th January 2024

Payment Date: 20th January 2024

Goods Removed: 18th January 2024

Time of Supply:

Earlier of: 15th (Invoice) OR 20th (Payment) OR 18th (Removal)

= 15th January 2024 (Invoice Date)

Tax liability arises on 15th January, even if payment is received later.

1.5 Place of Supply Rules

Understanding Place of Supply

Place of Supply (POS) determines whether a transaction is intra-state or inter-state, which in turn determines whether CGST+SGST or IGST is applicable. POS rules differ for goods and services.

Place of Supply for Goods

As per Section 10 of IGST Act:

Movement of Goods: Location where movement terminates (delivery to recipient)
No Movement: Location of goods at time of delivery
Installation/Assembly: Location where goods are installed/assembled
Export/Import: Location outside India (export) or inside India (import)

Place of Supply for Services

General Rule (Section 12):

Registered Recipient: Location of recipient (GSTIN address)
Unregistered Recipient: Location of supplier (if address not available)
B2C Services: Location of recipient (if known) or supplier

Special Rules for Services

Service Type	Place of Supply
Restaurant/Catering	Location where service is performed
Real Estate	Location of immovable property
Transportation	Destination of goods
Banking/Financial	Location of recipient

1.6 GST Rates Structure and Exemptions

GST Rate Slabs

GST in India follows a multi-rate structure with four main tax slabs: 5%, 12%, 18%, and 28%. Additionally, there are special rates for precious metals and some items are exempt or zero-rated.

5% Rate

Essential items:

Food items (cereals, pulses)
Medicines
Transportation services
Restaurant services (non-AC)

12% Rate

Standard items:

Processed foods
Computers, mobile phones
Business class air travel
Work contracts

18% Rate

Standard rate (most items):

Most goods and services
Restaurant services (AC)
IT services
Financial services

28% Rate

Luxury/sin items:

Luxury cars
Pan masala, tobacco
5-star hotels
Entertainment (cinema, amusement parks)

Exemptions and Zero-Rated Supplies

Exempt Supplies (No GST):

Fresh vegetables, fruits, milk
Educational services
Healthcare services
Religious services

Zero-Rated Supplies (0% GST with ITC):

Export of goods/services
Supplies to SEZ (Special Economic Zone)
ITC available even though rate is 0%

1.7 Registration Eligibility and Process

Mandatory Registration Thresholds

Registration is Mandatory if:

Aggregate Turnover: Exceeds ₹20 lakhs (₹10 lakhs for special category states)
Inter-State Supplies: Making inter-state taxable supplies (irrespective of turnover)
E-commerce Operators: Operating electronic commerce platforms
Casual Taxable Persons: Making taxable supplies without fixed place of business
Non-Resident Taxable Persons: Foreign entities supplying in India
Reverse Charge Mechanism: Liable to pay tax under reverse charge

Registration Process Flow

Registration Process Flowchart

Placeholder for step-by-step visual guide showing:

1. Visit GST Portal → 2. New Registration → 3. Fill Part-A → 4. Get TRN

5. Fill Part-B → 6. Upload Documents → 7. Submit → 8. Get ARN

9. Verification → 10. Receive GSTIN

[Image: Step-by-step registration process flowchart with screenshots]

Step 1: Visit GST Portal (www.gst.gov.in)
Step 2: Click on "Services" → "Registration" → "New Registration"
Step 3: Fill Part-A of REG-01 form (Basic Details)
Step 4: Receive Temporary Reference Number (TRN)
Step 5: Fill Part-B of REG-01 form (Complete Details)
Step 6: Upload required documents
Step 7: Submit application and receive Application Reference Number (ARN)
Step 8: Verification by tax officer (if required)
Step 9: Receive GSTIN (GST Identification Number)

Deep Dive: Registration Timeline

Processing Time:

Aadhaar Authentication: 3 working days (if opted)
Without Aadhaar: 7 working days
Physical Verification: Additional 7 days (if required)
Total Maximum: 15 working days from ARN generation

Required Documents

For Proprietorship:

PAN Card
Aadhaar Card
Address Proof
Bank Account Details
Photograph

For Company/LLP:

Certificate of Incorporation
PAN of Company
Board Resolution
Authorized Signatory Details
Address Proof of Business

1.8 REG-01 Form Structure and Documentation

REG-01 Form Overview

REG-01 is the application form for new GST registration. It is divided into two parts: Part-A (Basic Details) and Part-B (Complete Details). Understanding each section is crucial for successful registration.

Part-A: Basic Details

Information Required in Part-A:

Legal name of business (as per PAN)
Permanent Account Number (PAN)
Email address (for OTP verification)
Mobile number (for OTP verification)
State/UT where registration is sought
District

REG-01 Part-A Form Screenshot

Placeholder for GST portal screenshot showing:

• Legal Name field

• PAN input field

• Email and Mobile verification

• State/District selection

• OTP verification section

[Image: REG-01 Part-A form with all fields highlighted]

Part-B: Complete Details

Sections in Part-B:

Business Details: Trade name, constitution, commencement date
Principal Place of Business: Complete address, contact details
Additional Places: Warehouses, godowns (if any)
Goods and Services: HSN/SAC codes, description
Bank Account Details: Account number, IFSC, branch
Authorized Signatory: Details of person authorized to sign
Verification: Declaration and digital signature

REG-01 Part-B Form Screenshot

Placeholder for detailed form showing:

• Business details section

• Address fields with validation

• HSN/SAC code selection

• Bank account details

• Document upload section

• Digital signature area

[Image: REG-01 Part-B form with all sections visible]

Common Mistakes in REG-01 Filing

Errors to Avoid:

Mismatch between PAN name and business name
Incorrect state code or district selection
Missing or incorrect HSN/SAC codes
Incomplete address details
Wrong bank account details or IFSC code
Uploading wrong documents or poor quality scans
Not verifying email/mobile before submission

1.9 Business Schemes: Regular vs Composition

Regular Scheme vs Composition Scheme

Feature	Regular Scheme	Composition Scheme
Turnover Limit	No limit	Up to ₹1.5 crores (₹75 lakhs for special states)
Tax Rate	As per GST rates (5%, 12%, 18%, 28%)	1% (Manufacturers), 5% (Restaurants), 6% (Others)
Input Tax Credit	Can claim ITC	Cannot claim ITC
Returns Filing	Monthly/Quarterly (GSTR-1, GSTR-3B)	Quarterly (CMP-08, GSTR-4)
Inter-State Sales	Allowed	Not allowed (except to SEZ)

Decision Framework: Which Scheme to Choose?

Choose Regular Scheme if:

You have high input tax credit availability
You make inter-state supplies
Your customers need GST invoices with ITC
Turnover exceeds ₹1.5 crores

Choose Composition Scheme if:

Turnover is below ₹1.5 crores
Limited input purchases (low ITC)
Only intra-state supplies
Want simplified compliance

Regular vs Composition Scheme Comparison Chart

Placeholder for visual comparison showing:

• Side-by-side comparison table

• Decision tree flowchart

• Cost-benefit analysis chart

• Eligibility criteria checklist

[Image: Visual comparison chart of Regular vs Composition schemes]

Deep Dive: Financial Impact Analysis

Example: Manufacturing Business (Turnover: ₹1 crore)

Regular Scheme:

Output Tax: ₹18,00,000 (18%)

Input Tax Credit: ₹12,00,000

Net Tax: ₹6,00,000

Composition Scheme:

Tax Rate: 1%

No ITC Available

Net Tax: ₹1,00,000

Note: Composition saves ₹5,00,000 but customer cannot claim ITC. Choose based on customer requirements.

1.10 Real-World Case Studies and Practice

Case Study 1: E-commerce Seller Registration

Scenario: Priya runs an online clothing store from her home in Delhi. She sells through Amazon and Flipkart. Her annual turnover is ₹15 lakhs.

Analysis:

Turnover is below ₹20 lakhs threshold
BUT: Making supplies through e-commerce operators (Amazon/Flipkart)
Decision: Registration is MANDATORY (Section 24(x) of CGST Act)
Cannot opt for composition scheme (e-commerce suppliers not eligible)

Case Study 2: Multi-State Business

Scenario: Tech Solutions Pvt. Ltd. has offices in Mumbai and Bangalore. They provide IT services to clients across India. Annual turnover: ₹50 lakhs.