Unit 3: Goods and Services Tax
Direct and Indirect Tax notes · PTU syllabus (MCOP301-18)
On this page
- Unit summary
- Pre-GST structure and its deficiencies
- Administration of indirect taxation in India
- Constitutional framework of GST
- The GST model
- Taxable event and the concept of supply
- Levy and collection of CGST and IGST
- Composition scheme (Section 10)
- Reverse charge mechanism (RCM)
- Exemptions under GST (Section 11)
- Input tax credit and GST liability
- Procedural compliance (summary)
- Key terms
- Quick revision
- Important questions
Unit summary
GST replaced most indirect taxes with a single, destination-based tax. This unit covers the pre-GST structure and its deficiencies, administration of indirect taxes, the constitutional framework of GST, the CGST/IGST/SGST/UTGST model, taxable event and supply, levy and collection, composition and reverse charge, exemptions, input tax credit and computation of GST liability, and procedural compliance.
After this unit you can
- Explain the deficiencies of the pre-GST structure and the GST constitutional framework
- Explain the dual GST model, supply and levy
- Explain composition, reverse charge, exemptions and ITC
- Summarise GST procedural compliance
PTU syllabus topics
- Pre-GST tax structure and deficiencies
- administration of indirect taxation
- GST constitutional framework
- the CGST/IGST/SGST/UTGST model
- taxable event and concept of supply
- levy and collection
- composition scheme and reverse charge
- exemptions
- input tax credit and GST liability computation
- procedural compliance
Intra-state supply
CGST + SGST (or UTGST)
Inter-state supply
IGST
Net GST payable
Output tax − eligible input tax credit
Reverse charge
Recipient pays instead of supplier
Composition scheme
Small taxpayers pay a flat rate on turnover
Topic 1
Pre-GST structure and its deficiencies
Cascading of taxes
Tax on tax — no credit of excise against VAT or of CST
Multiplicity of taxes
Many laws, returns and authorities
Non-integrated market
Check-posts, entry tax, varying state rates
Classification disputes
Goods vs services (software, works contracts)
Limited input credit
Service tax credit not available against VAT
Compliance burden
Separate registrations and returns
Tax evasion and unorganised sector
Example
A manufacturer paid excise on production; the trader then paid VAT on the price including excise — excise itself was taxed again (cascading), raising consumer prices.
Topic 2
Administration of indirect taxation in India
- Central Board of Indirect Taxes and Customs (CBIC) under the Department of Revenue, Ministry of Finance — administers CGST, IGST, customs and central excise.
- State tax departments — SGST and state taxes on petroleum and liquor.
- GST Council — recommends rates, exemptions, thresholds and laws.
- GSTN (Goods and Services Tax Network) — IT backbone for registration, returns, payments.
- Appellate structure: Appellate Authority → GST Appellate Tribunal (GSTAT) → High Court → Supreme Court; Authority for Advance Ruling (AAR) and Appellate AAR.
Topic 3
Constitutional framework of GST
- 1
122nd Constitution Amendment Bill (2014)
Passed by Parliament in August 2016
- 2
101st Constitutional Amendment Act, 2016
Ratified by states, assent on 8 September 2016
- 3
Article 246A
Concurrent power to Parliament and state legislatures to make GST laws; Parliament exclusively for inter-state supplies
- 4
Article 269A
IGST on inter-state supplies, apportioned between Centre and states
- 5
Article 279A
GST Council
- 6
Article 366(12A)
Defines GST as tax on supply except alcoholic liquor for human consumption
- 7
GST Compensation to States Act, 2017
Compensation for revenue loss for 5 years (till June 2022)
GST Council (Article 279A)
- Chairperson: Union Finance Minister; members: Union MoS (Revenue/Finance) and the Finance/Taxation Minister of each state.
- Quorum: one-half of total members. Decisions: at least three-fourths of weighted votes — Centre one-third, states together two-thirds.
- Functions: recommends taxes to be subsumed, exempted goods and services, model GST laws, rates and slabs, thresholds, special provisions for special category states, dispute resolution.
- Legislation: CGST Act 2017, IGST Act 2017, UTGST Act 2017, GST (Compensation to States) Act 2017 and 31 SGST Acts.
Exam tip
The GST Council is often called an example of cooperative federalism — use the phrase in long answers.
Topic 4
The GST model
CGST
Central GST on intra-state supplies — CGST Act, 2017
SGST
State GST on intra-state supplies — State GST Acts
UTGST
Union Territory GST in UTs without legislature (Chandigarh, Ladakh, etc.)
IGST
Integrated GST on inter-state supplies, imports and supplies to/from SEZs — IGST Act, 2017
| Type of supply | Tax levied |
|---|---|
| Within Punjab (intra-state) | CGST 9% + SGST 9% (for an 18% item) |
| Punjab to Haryana (inter-state) | IGST 18% |
| Within Chandigarh (UT) | CGST 9% + UTGST 9% |
| Import of goods | IGST 18% + basic customs duty |
| Supply to an SEZ unit | IGST (zero-rated) |
- Settlement of IGST: the Centre transfers the SGST portion of IGST to the consuming (destination) state — making GST destination-based.
Topic 5
Taxable event and the concept of supply
The taxable event under GST is supply of goods or services or both.
7(1)(a)
Sale, transfer, barter, exchange, licence, rental, lease or disposal for consideration in the course or furtherance of business
7(1)(b)
Import of services for consideration, whether or not in business
7(1)(c)
Activities in Schedule I even without consideration
Schedule II
Whether an activity is a supply of goods or services
Schedule III
Neither supply of goods nor services
- Schedule I (without consideration): permanent transfer of business assets where ITC was availed; supplies between related persons or distinct persons (branches in different states) in the course of business; principal–agent supplies; import of services from a related person abroad. Gifts up to ₹50,000 a year by an employer to an employee are not supply.
- Schedule II examples: transfer of title in goods = supply of goods; lease or rental = supply of services; works contract and restaurant service = supply of services.
- Schedule III (not supply): services by an employee to an employer; services by courts and MPs/MLAs; funeral and burial services; sale of land and (generally) completed building; actionable claims other than specified actionable claims (lottery, betting, gambling, online gaming, horse racing); high-sea sales; merchant trade.
Exam tip
For "is this a supply?" questions, check four tests: goods or services, made for consideration, in the course or furtherance of business, and taxable territory.
Topic 6
Levy and collection of CGST and IGST
- Section 9 (CGST) / Section 5 (IGST): tax levied on all intra-state (CGST) or inter-state (IGST) supplies on the value determined under Section 15, at rates notified on Council recommendation — CGST up to 20%, IGST up to 40%.
- Exclusions: alcoholic liquor for human consumption; five petroleum products until notified.
- Who pays: normally the supplier (forward charge); under reverse charge, the recipient; e-commerce operators pay tax on certain services (Section 9(5)) — passenger transport (cab aggregators), accommodation, restaurant services through apps.
- Threshold for registration: aggregate turnover above ₹40 lakh (goods, most states), ₹20 lakh (services), ₹20 lakh/₹10 lakh in special category states.
Topic 7
Composition scheme (Section 10)
| Feature | Provision |
|---|---|
| Eligibility | Aggregate turnover up to ₹1.5 crore (₹75 lakh in special category states) in the preceding year |
| Rates (CGST + SGST) | Manufacturers 1%, traders 1% (on taxable turnover), restaurants 5%, other service providers 6% (turnover up to ₹50 lakh — Section 10(2A)) |
| Input tax credit | Not available |
| Tax collection | Cannot collect tax from customers; issue bill of supply |
| Returns | Quarterly statement CMP-08 and annual return GSTR-4 |
| Not eligible | Inter-state outward supply, e-commerce sellers of goods, non-resident and casual taxable persons, manufacturers of ice cream, pan masala, tobacco |
- Must mention "composition taxable person, not eligible to collect tax on supplies" on the bill of supply and at the place of business.
Topic 8
Reverse charge mechanism (RCM)
Under RCM, the recipient pays the tax instead of the supplier.
Section 9(3)
Notified goods and services — e.g., goods transport agency (GTA), legal services by an advocate, sponsorship services, services by a director to a company, cashew nuts and raw cotton from agriculturists, renting of commercial property by an unregistered person to a registered person
Section 9(4)
Specified supplies from unregistered persons to specified registered persons (e.g., promoters of real estate)
Section 5(3) IGST
Import of services
- The recipient must register (no threshold) and pay tax in cash; ITC of RCM tax is available if used for business.
- Self-invoice must be issued for supplies from unregistered persons.
Example
A company in Ludhiana pays ₹1,00,000 to an advocate. The company (recipient) pays GST of ₹18,000 (CGST 9% + SGST 9%) under RCM and can claim it as ITC.
Topic 9
Exemptions under GST (Section 11)
- The Central Government, on the recommendation of the GST Council, may exempt goods or services generally (by notification — absolutely or conditionally) or specially (by special order in exceptional circumstances).
- Exempt supply includes nil-rated, non-taxable and wholly exempt supplies; no ITC is available on inputs used for exempt supplies.
Important exemptions
| Goods | Services |
|---|---|
| Fresh fruits and vegetables, cereals (unbranded/unpacked) | Health care by clinical establishments and doctors |
| Fresh milk, curd, eggs | Education by an educational institution up to higher secondary and approved courses |
| Salt, jaggery | Services by RBI, government (certain) |
| Books, newspapers | Agricultural services — cultivation, storage, warehousing of agricultural produce |
| Human blood, contraceptives | Transport of passengers by public transport (non-AC buses, metro, rail in second class) |
| Handloom products (some) | Residential dwelling rented for residence (to unregistered person) |
| Individual life and health insurance (from 22 September 2025) | Services by charitable entities for specified activities |
Tax on output
Nil
Nil (exports, SEZ supplies)
Input tax credit
Not available
Available or refund allowed
Purpose
Relief to consumers
Competitive exports
Topic 10
Input tax credit and GST liability
Input tax credit (ITC) — GST paid on inputs, input services and capital goods used in the course of business can be set off against output tax.
Conditions (Section 16)
- Possession of a tax invoice/debit note; goods or services received; supplier has paid the tax and the invoice appears in GSTR-2B; recipient files returns; payment to supplier within 180 days (else ITC reversed with interest).
- Time limit: ITC must be claimed by 30 November following the end of the financial year (or the annual return date, if earlier).
Blocked credits (Section 17(5))
Motor vehicles for passenger transport (≤ 13 persons, except for specified businesses), food and beverages, outdoor catering, beauty treatment, health services, club membership, travel benefits for employees on vacation, works contract and construction of immovable property (other than plant and machinery), goods lost, stolen, destroyed or given as free samples, tax paid under composition, personal consumption.
- 1IGST credit
First against IGST, then CGST and SGST in any order and proportion
- 2CGST credit
Against CGST, then IGST — never SGST
- 3SGST credit
Against SGST, then IGST — never CGST
- 4IGST credit must be fully used before CGST or SGST credit
Example
Output tax: IGST ₹50,000, CGST ₹30,000, SGST ₹30,000. ITC: IGST ₹60,000, CGST ₹20,000, SGST ₹15,000. Use IGST credit: ₹50,000 against IGST, remaining ₹10,000 against CGST. CGST payable = 30,000 − 10,000 − 20,000 = 0. SGST payable = 30,000 − 15,000 = ₹15,000 in cash.
- Apportionment (Section 17(1)–(2)): ITC on inputs used partly for exempt supplies is reversed proportionately (Rules 42–43).
Topic 11
Procedural compliance (summary)
| Area | Key requirement |
|---|---|
| Registration | Threshold ₹40 lakh (goods) / ₹20 lakh (services); compulsory cases under Section 24; GSTIN based on PAN |
| Tax invoice | Before/at removal of goods; within 30 days for services; e-invoicing above ₹5 crore turnover |
| E-way bill | Movement of goods above ₹50,000 |
| Returns | GSTR-1 (outward supplies, 11th), GSTR-3B (summary and payment, 20th), GSTR-9 (annual) |
| Payment | Electronic cash and credit ledgers; interest 18% on delay |
| Refunds | RFD-01 within 2 years; exports and inverted duty structure |
Key terms
- Cascading
- Tax on tax in the pre-GST system
- Supply
- Taxable event under GST
- Composition scheme
- Simplified scheme with flat rates and no ITC
- Reverse charge
- Recipient pays GST
- Input tax credit
- Credit of GST paid on inputs against output tax
Quick revision
- Pre-GST: multiple taxes, cascading, fragmented market.
- 101st Amendment; Articles 246A, 269A, 279A.
- CGST + SGST intra-state; IGST inter-state and imports.
- Composition ₹1.5 crore; RCM on GTA, legal services; exemptions by Section 11.
- ITC conditions and order of utilisation; compliance summary.
Important exam questions
Practice questions written to the PTU exam pattern for this unit's syllabus: short answers (Section A style) and long answers (Sections B and C style).
Short-answer questions
- Q1.State two deficiencies of the pre-GST regime.
- Q2.What is Article 279A?
- Q3.What is IGST?
- Q4.What is mixed supply?
- Q5.Give two examples of reverse charge.
- Q6.What are blocked credits?
Long-answer questions
- Q1.Explain the deficiencies of the pre-GST tax structure and the need for GST.
- Q2.Explain the constitutional framework and the dual GST model.
- Q3.Explain the concept of supply, composition scheme and reverse charge.
- Q4.Explain input tax credit and computation of GST liability.
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