Goods and Services Tax (GST) — India's Tax Reform

What Is GST?

GST is a comprehensive, multi-stage, destination-based indirect tax levied on every value addition in the supply chain. It replaced multiple cascading taxes (excise duty, service tax, VAT, CST, octroi, entry tax, luxury tax, etc.) with a single unified tax.

"One Nation, One Tax, One Market"

Key distinction: Petroleum and alcohol are excluded from GST for fundamentally different reasons. Alcoholic liquor for human consumption is excluded by the Constitution itself — specifically through the definition of GST in Article 366(12A) (which expressly excludes alcohol) and the retention of State List Entry 51 (Seventh Schedule) which preserves states' exclusive power to tax alcohol. Petroleum products are technically within GST's scope but the GST Council has not yet notified a date for their inclusion — this is a political decision, not a constitutional bar. So petroleum CAN be brought under GST by Council recommendation; alcohol CANNOT without a Constitutional Amendment. This distinction is a Prelims trap.

Constitutional Framework

Key Articles Inserted by 101st Amendment

GST Council (Article 279A)

Exam Tip: The GST Council's voting design ensures neither Centre nor States can unilaterally push through decisions. Centre has 1/3rd votes, so it CANNOT reach 3/4th alone. States collectively have 2/3rd, which is also less than 3/4th. This forces consensus — a deliberate cooperative federalism feature. But after the Mohit Minerals (2022) ruling, even this consensus is advisory, not binding. For Mains, connect this to the broader Centre-State fiscal autonomy debate.

Union of India v. Mohit Minerals (2022): The Supreme Court held that GST Council's recommendations are not binding on Centre or States — they are persuasive. This preserves cooperative federalism.

GST Structure

Types of GST

Example: A Rs. 100 product sold within Maharashtra at 18% GST → 9% CGST (to Centre) + 9% SGST (to Maharashtra). If sold from Maharashtra to Gujarat → 18% IGST (collected by Centre, consuming state's share transferred to Gujarat).

GST Rate Slabs

Original Structure (2017–2025)

GST 2.0 Reforms (56th GST Council, 3 September 2025, New Delhi; effective 22 September 2025)

Major simplification — the 12% slab was eliminated (items moved to 5% or 18%), the 28% slab was effectively abolished for most goods (compensation cess merged into new headline rates), and a consolidated three-slab structure emerged: 5%, 18%, and 40%.

Critical Prelims distinction: The 28% slab is NOT fully gone — it survives for tobacco/beedi with cess on top until the compensation cess loans are repaid. For all other goods, the 28% + Cess combination is replaced by a single 40% rate. The GST maximum ceiling has been proposed to be raised to 60% (a legal cap, not an immediate rate) to accommodate future flexibility.

Other key reforms: automated risk-based refund system (90% provisional refund for exporters from 1 November 2025); GSTAT (GST Appellate Tribunal) made operational (principal bench New Delhi, 31 state benches, 45 locations; effective September–December 2025); individual life and health insurance exempted from GST (group/corporate insurance at 18% remains unchanged); automated GST registration within 3 working days for businesses with liability ≤ Rs. 2.5 lakh/month (effective 1 November 2025).

Input Tax Credit (ITC)

The backbone of GST — eliminates cascading (tax-on-tax) effect.

• ITC allows a business to claim credit for GST paid on inputs (raw materials, services) against the GST collected on output (sales)
• Only available for registered taxable persons
• Conditions: Must have a valid tax invoice; goods/services must be used for business purposes; supplier must have filed returns
• Inverted duty structure — when input tax rate > output tax rate, taxpayer can claim refund

Common Mistake: Aspirants assume GST completely eliminated cascading. It did not — since petroleum, alcohol, and electricity are outside GST, businesses using these as inputs (e.g., transport companies buying diesel, restaurants buying liquor) CANNOT claim ITC on them. This creates a "broken chain" in the credit mechanism, effectively reintroducing cascading for these inputs. This is one of the strongest arguments for including petroleum under GST.

GST Compensation Cess

• Purpose: Compensate states for revenue loss due to GST implementation
• Duration: 5 years (2017–2022); extended to March 2026 to repay COVID-era borrowings; largely ended 31 March 2026 — cess merged into 40% GST rate for most goods (aerated drinks, luxury vehicles, coal, etc.)
• Base year: 2015-16 revenue with 14% annual growth guaranteed
• Levied on: Luxury and sin goods (tobacco, aerated drinks, motor vehicles, coal)
• Tobacco exception: Compensation cess on cigarettes, pan masala, gutkha, beedi, unmanufactured tobacco continues beyond March 2026 until the entire COVID-era back-to-back loan to states is fully discharged; date of discontinuation to be notified separately.
• Issue: Centre borrowed Rs. 2.69 lakh crore on behalf of states during COVID; cess on tobacco continues to repay this residual amount

GST Registration and Compliance

Taxes Subsumed Under GST

Central Taxes Subsumed

• Central Excise Duty
• Additional Duties of Excise
• Service Tax
• Additional Customs Duty (CVD)
• Special Additional Duty of Customs (SAD)
• Central surcharges and cesses related to supply of goods and services

State Taxes Subsumed

• State VAT
• Central Sales Tax (CST)
• Purchase Tax
• Luxury Tax
• Entry Tax / Octroi
• Entertainment Tax (except those levied by local bodies)
• Taxes on advertisements, lotteries, betting, gambling

Impact of GST

Positives

• One market — eliminated inter-state barriers, reduced logistics costs
• Reduced cascading — ITC mechanism ensures tax only on value addition
• Improved compliance — digital trail through GSTN
• Revenue buoyancy — GST collections crossed Rs. 2 lakh crore/month in FY26
• Formalisation — more businesses brought into the tax net
• Consumer benefit — lower prices for many goods due to eliminated cascading

Challenges

• Complexity for small businesses — multiple returns, technology adoption
• Petroleum exclusion — biggest revenue item still outside GST
• Compensation cess extension — created fiscal strain
• Rate rationalisation — frequent changes create uncertainty
• Inverted duty structure — refund delays for exporters and certain sectors

Cross-paper relevance

• GS3 — Indian Economy (primary) — GST structure, 101st Amendment, GST Council, CGST/SGST/IGST, rate rationalisation, GST 2.0 reforms
• GS2 — Federalism: GST Council as model of cooperative federalism; Centre-State revenue sharing; compensation mechanism
• GS3 — Fiscal policy: indirect tax buoyancy, input tax credit, compliance and formalisation
• Essay — "GST: India's boldest indirect tax reform"; "One nation, one tax — vision and reality"

Recent Developments (2024–2026)

GST at 9 Years — Records in Both FY25 and FY26

FY 2024-25: Gross GST collection reached Rs. 22.08 lakh crore — a 9.4% increase over FY24, with an average monthly collection of Rs. 1.84 lakh crore. April 2025 collection of Rs. 2.37 lakh crore set a then-record monthly high.

FY 2025-26: Gross GST collection reached Rs. 22,27,096 crore (Rs. 22.27 lakh crore) — up 8.3% from FY25. April 2026 collection of Rs. 2,42,702 crore (Rs. 2.43 lakh crore) is the NEW all-time high monthly GST collection since inception (surpassing April 2025's Rs. 2.37 lakh crore). March 2026 collection was Rs. 2,00,064 crore (+8.8% YoY), marking the first time in FY26 a non-April month crossed Rs. 2 lakh crore.

The GST Network (GSTN) has been upgraded to handle over 90 million returns per month. Invoice Matching System (IMS) — introduced from October 2024 — allows recipients to accept, reject, or keep invoices pending for ITC claims, reducing false credit claims. The Government's focus in "GST 2.0" has been to broaden the base (bringing petroleum products and real estate under GST) and reduce litigation (over 17,000 advance rulings backlog).

UPSC angle (Prelims 2027): April 2026 — Rs. 2,42,702 crore — all-time high monthly GST collection; FY26 annual: Rs. 22.27 lakh crore; FY25: Rs. 22.08 lakh crore; Invoice Matching System (IMS, Oct 2024); GST 2.0 reform agenda (petroleum, dispute reduction) are high-probability Prelims and Mains current-affairs questions.

GST Council 2024-25 — Political Economy of Rate Rationalisation

The GST 2.0 structural changes (56th Council, rate structure) are detailed in the GST Rate Slabs section above. What the static rate tables cannot show is the political economy of why rationalisation took 8 years.

The insurance GoM (constituted at the 54th Council, September 2024) was the critical path-breaker. Insurance at 18% GST was technically defensible — financial services are standard-rated — but politically unsustainable: India's insurance penetration is ~4% of GDP against a 7%+ target in the IRDAI Vision 2047. The GoM's 8-month deliberation (September 2024 to April 2025) involved a specific fiscal trade-off: Centre and states collectively forgo approximately Rs. 3,000–3,500 crore annually from individual insurance exemption; they accepted this as a social-sector investment in penetration-led growth.

The 12% slab elimination had been recommended since the 2018 Sushil Modi-chaired GoM — it took 7 years to implement because slab migration requires consensus on revenue-neutral classification (is processed cheese a 5% merit good or an 18% standard good?). The eventual solution was to use the GST 2.0 reform as a package deal — states accepted insurance revenue loss in exchange for retaining 40% sin-goods revenue that would otherwise have been diluted.

UPSC angle: The political economy of GST rate rationalisation (state revenue concerns, IGST distribution, insurance penetration argument) and the 8-year delay between GST launch and 12%-slab elimination are strong Mains GS3 analytical frameworks. The Centre-State fiscal bargaining within the GST Council is a live cooperative federalism case study.

GST Compensation Cess — Beyond 2026 Extension Uncertain

The Compensation Cess lifecycle and the COVID-era extension mechanism are explained in the GST Compensation Cess section above. The analytical dimension here is the structural fiscal reset for states.

States that received compensation payments (particularly revenue-deficit states like Punjab, Kerala, Himachal Pradesh, and Chhattisgarh) had budgeted for 14% annual revenue growth that was never realistic from own-GST collections. The five-year guarantee created a moral hazard: states had lower incentive to enforce GST compliance aggressively since the Centre topped up any shortfall. From April 2026, this safety net is removed.

The post-cess environment means three things for state fiscal management: (a) states must invest in GST enforcement infrastructure (data analytics, e-way bill verification, anti-profiteering action); (b) the demand for petroleum to be brought under GST — which would add significant IGST/SGST revenue — becomes more urgent for states; (c) the fiscal federalism stress test begins: states with strong GST administration (Karnataka, Maharashtra, Tamil Nadu) will diverge further from states with weak compliance infrastructure (some North-East and central states).

Important nuance (Prelims 2027 trap): The cess did NOT simply "end" on 31 March 2026 — it was restructured. For most goods (aerated drinks, luxury cars, coal), the compensation cess was merged into the new 40% consolidated GST rate effective 22 September 2025, so those items effectively still carry the equivalent of the old 28% + cess burden, just under one headline rate. Only for tobacco/beedi does the separate cess continue beyond March 2026, until the COVID-era back-to-back loans to states are fully repaid. The GoM on compensation cess has also recommended raising the legal GST ceiling from 40% to 60% to provide headroom for future rate adjustments.

UPSC angle: Post-cess fiscal federalism (state revenue self-reliance), petroleum-under-GST as a state revenue argument, the moral hazard of the compensation guarantee, and the Centre's borrowing mechanism (back-to-back loans to states) are all Mains GS3 analytical themes. The cess restructuring (merged into 40% for most goods; continuing for tobacco until loans repaid) is a Prelims 2027 fact — do not confuse "cess ended" with "cess removed."

Vocabulary

Anti-profiteering

• Pronunciation: /ˌæntɪ-ˈprɒfɪtɪərɪŋ/
• Definition: Legal mandate under Section 171 of CGST Act requiring businesses to pass on benefits of GST rate reductions or ITC gains to consumers
• Root: Greek anti- = against + Latin profectus = advancement → profit; compound coined in regulatory law
• Explanation: When GST rates are reduced or when a business gains additional ITC benefits due to GST implementation, Section 171 mandates that such benefits must be passed on to consumers through commensurate price reductions. The National Anti-Profiteering Authority (NAA) was constituted to examine complaints. The GST Council recommended a sunset clause for anti-profiteering with effect from 1 April 2025, with the Competition Commission of India (CCI) handling residual cases.
• Origin: Anti- (Greek anti, against) + profiteering (making excessive profits, from profit — Latin profectus, advancement). The concept draws from wartime price control laws; in the GST context, it was borrowed from Malaysia and Australia's GST implementation models.
• Synonyms: Price pass-through mandate (descriptive term used in economic analysis); no exact synonym exists in Indian tax law
• Antonyms: Price gouging (the practice anti-profiteering aims to prevent); profiteering (excessive profit-making that this provision targets)
• UPSC: GS3 — Consumer protection, GST governance; Prelims (Section 171, NAA, CCI takeover), Mains (effectiveness of anti-profiteering, comparison with other countries' GST models)
• Related: [[GST Compensation]], [[Composition Scheme]]
• Part of Speech: adjective (attributive); also used as a noun (the practice/regime of preventing profiteering)
• Word Family: profiteer (n/v), profiteering (n/v pres.p), anti-profiteering (adj/n), profit (n/v), profiteered (v past)
• Usage: The anti-profiteering provisions of the GST regime were conceived as a consumer-welfare safeguard, ensuring that statutory rate cuts translated into lower retail prices rather than swelling corporate margins; yet their case-by-case adjudication exposed the difficulty of legislating fairness without a transparent, formula-based methodology.
• Mnemonic: "ANTI- (against) + PROFIT + -EER (one who does)" — a rule set against those who would PROFIT-EER, i.e. milk a crisis or a tax cut for excess gain. Picture a war-time shopkeeper jacking up bread prices, and a stamp coming down: "ANTI-PROFITEERING."

Key Terms

GSTN

• Definition: The Goods and Services Tax Network (GSTN) is the not-for-profit company that builds and operates the IT backbone (the GST Common Portal) for the administration of India's Goods and Services Tax, handling registration, return filing, tax payment and inter-governmental tax settlement. Incorporated on 28 March 2013 as a Section 8 company, it is now a 100% government-owned entity.
• Context: GST, launched on 1 July 2017, unified a host of indirect taxes and required a single, nationwide digital platform to process the data of crores of taxpayers across the Centre and all States/UTs. GSTN was created to provide this shared, common IT infrastructure so that taxpayers face a single interface while the Centre and States retain their respective administrative powers. Originally structured as a public-private partnership (49% government, 51% private financial institutions), it was later converted into a wholly government-owned company on the GST Council's recommendation.
• UPSC Relevance: GSTN is a foundational concept that underpins the GS3 economy theme of GST and indirect-tax administration, and the GS2 theme of cooperative/fiscal federalism (shared Centre-State IT infrastructure). For Prelims, examiners test its nature (Section 8 not-for-profit company), its ownership change to 100% government control, and the Centre-State 50:50 equity split. For Mains, it is useful as an example of digital governance and the institutional architecture enabling "one nation, one tax." No verified PYQ exists for this exact term, but it supports the broader GST question family frequently tested.

E-way Bill

• Definition: The E-way (Electronic Way) Bill is an electronic document, generated on the GST portal (ewaybillgst.gov.in) in Form GST EWB-01, that must accompany the movement of goods worth more than Rs 50,000, under Section 68 of the CGST Act, 2017 read with Rule 138 of the CGST Rules, 2017.
• Context: Before GST, inter-state movement of goods required state-specific physical way bills and check-post clearances, causing long truck queues and fragmenting India's logistics market. The e-way bill replaced these with a single nationwide electronic permit: it became mandatory for inter-State movement from 1 April 2018 (after a failed first attempt on 1 February 2018 due to server crashes), and the phased intra-State rollout was completed when Delhi joined on 16 June 2018. The system is run by the National Informatics Centre (NIC) in association with GSTN, and monthly generation volumes are now widely tracked as a high-frequency indicator of goods movement and economic activity.
• UPSC Relevance: This is a foundational GST-architecture concept that underpins Prelims questions on the GST Council, GSTN, indirect tax reform and statements-based questions on what the e-way bill is and when it is required. For GS3 Mains, it feeds into themes of cooperative federalism, formalisation of the economy, logistics efficiency and technology-enabled tax compliance (alongside e-invoicing and FASTag integration). Its monthly generation data is also exam-relevant as a lead indicator of economic activity cited in the Economic Survey discourse.

CGST

• Definition: CGST (Central Goods and Services Tax) is the tax levied and collected by the Central Government on intra-state supplies of goods and services under the Central Goods and Services Tax Act, 2017 (Act No. 12 of 2017). It is charged alongside SGST/UTGST on the same transaction, with the revenue accruing to the Centre.
• Context: India adopted a dual GST model on 1 July 2017, made possible by the Constitution (101st Amendment) Act, 2016, which inserted Article 246A giving both Parliament and state legislatures concurrent power to tax supplies of goods and services. Under this model, every intra-state supply attracts two equal levies — CGST (to the Centre) and SGST/UTGST (to the state/UT) — while inter-state supplies attract IGST collected by the Centre. CGST subsumed earlier central levies such as Central Excise Duty, Service Tax, Additional Customs Duty (CVD) and central surcharges and cesses. Rates are notified by the Centre on the recommendations of the GST Council (Article 279A).
• UPSC Relevance: CGST is a foundational concept that underpins Prelims questions on the dual GST architecture, the 101st Constitutional Amendment, Articles 246A/269A/279A and the GST Council, where aspirants are often tested on which government levies which component and where the revenue goes. For Mains GS3, it feeds into answers on cooperative fiscal federalism, indirect tax reform and the 2025 GST 2.0 rate rationalisation. Mastery of the CGST–SGST–IGST distinction is essential because UPSC frequently frames statement-based questions around it.

GST Council and Slabs

• Definition: The GST Council is the apex constitutional body (Article 279A, inserted by the 101st Constitutional Amendment Act, 2016) that recommends rates, exemptions, and rules for India's Goods and Services Tax; "slabs" are the tiered tax rates into which goods and services are classified — restructured from the original 5/12/18/28% bands into a simplified 5%/18% (plus a 40% demerit rate) regime under "GST 2.0" effective 22 September 2025.
• Context: GST replaced a fragmented web of central and state indirect taxes when it was launched on 1 July 2017, creating a unified national market. The GST Council was constituted under Article 279A after the 101st Amendment came into force in September 2016, giving the Centre and States a joint platform to decide rates and design — a flagship example of cooperative (and fiscal) federalism. After eight years of a four-slab structure, the 56th Council meeting (3 September 2025) approved a major rate rationalisation collapsing most items into two principal slabs.
• UPSC Relevance: This is a foundational GS3 (Indian Economy — taxation, fiscal policy) and GS2 (federalism, Centre-State relations) concept that underpins recurring questions on indirect tax reform, GST architecture, and cooperative federalism. Prelims typically tests factual recall — the article number (279A), the amendment (101st), composition, and the weighted-voting/quorum rules — while Mains frames it around fiscal federalism, the recommendatory (non-binding) nature of Council decisions after the Mohit Minerals judgment (2022), and revenue-sharing tensions. No verified PYQ exists for this exact term, but it anchors the broader topic family of GST, federal finance, and indirect taxation.

Input Tax Credit (GST)

• Definition: Input Tax Credit (ITC) is the mechanism under GST that lets a registered taxpayer reduce the tax payable on outward supplies (sales) by the GST already paid on inward supplies (purchases of goods or services used in the course or furtherance of business). It is the device that makes GST a value-added tax by allowing tax paid at each stage to be set off against tax collected at the next.
• Context: ITC is the core feature that eliminates the "tax on tax" cascading effect of the pre-GST indirect tax regime, where credit could not flow seamlessly across central and state levies. Its legal basis lies in the Goods and Services Tax framework enabled by the Constitution (101st Amendment) Act, 2016 (assent 8 September 2016), with GST rolled out from 1 July 2017. Eligibility and conditions are governed primarily by Section 16, apportionment and blocked credits by Section 17, and the order of utilisation by Sections 49, 49A, 49B read with Rule 88A of the CGST Act/Rules, 2017. By making credit conditional on the supplier actually reporting and paying tax, ITC also functions as a compliance-anchoring device for the entire chain.
• UPSC Relevance: ITC is a foundational concept that underpins GST questions across the Prelims economy section and GS3 (mobilisation of resources, indirect taxation, fiscal federalism). In Prelims, the testable angles are factual: the conditions under Section 16(2), blocked credits under Section 17(5), and the IGST-first order of cross-utilisation. In Mains GS3, ITC features in analytical questions on how GST removed cascading, broadened the tax base, formalised the economy, and on leakages such as fake-invoicing fraud and ITC-mismatch disputes. No verified direct PYQ exists for this exact term; treat it as the conceptual backbone of the broader GST/indirect-tax question family.

Cascading Effect

• Pronunciation: /kæˈskeɪdɪŋ ɪˈfɛkt/
• Definition: The tax-on-tax problem in indirect taxation where each successive stage of production or distribution levies tax on a value that already includes taxes paid at earlier stages, resulting in an inflated final price for the consumer. Before GST, India's fragmented tax system (Central Excise + State VAT + Service Tax + CST + Octroi) had no cross-credit mechanism — a manufacturer paying 12% excise could not claim credit against 14% VAT on sale, and service tax credits could not offset excise or VAT liabilities, compounding the effective tax burden by an estimated 25-30% above the nominal rate.
• Context: India's pre-GST indirect tax regime imposed multiple taxes at different stages with limited or no cross-credit: Central Excise on manufacture, State VAT on intra-state sale, CST on inter-state sale, service tax on services, plus octroi, entry tax, luxury tax, and entertainment tax. Since businesses could not claim credit across these different taxes (e.g., CENVAT credit did not offset VAT; VAT credit did not offset CST), the effective tax rate was much higher than the nominal rate. GST (launched 1 July 2017) addressed this through a seamless Input Tax Credit (ITC) mechanism under Section 16 of the CGST Act, 2017, allowing full credit of all GST paid on inputs against GST collected on outputs across the supply chain. However, cascading is NOT fully eliminated — petroleum products, alcohol, and electricity remain outside GST, so businesses using these as inputs (transport companies buying diesel, restaurants buying liquor) cannot claim ITC on them, creating a "broken chain" in the credit mechanism.
• UPSC Relevance: GS3 Economy — Prelims: what cascading means (tax-on-tax), how ITC under GST prevents it (credit of input tax against output tax), which items remain outside GST and still cause cascading (petroleum, alcohol, electricity); Mains: pre-GST vs post-GST tax burden analysis (estimated 2-3% GDP gain from eliminating cascading), impact on prices and consumer welfare, why petroleum must be brought under GST to complete the ITC chain, comparison with cascading elimination in other VAT/GST countries.

Dual GST

• Pronunciation: /ˈdjuːəl dʒiː-ɛs-tiː/
• Definition: India's unique concurrent dual GST model where both the Central Government (CGST) and State Governments (SGST/UTGST) levy tax simultaneously on the same intra-state supply of goods and services, while a single Integrated GST (IGST) is levied by the Centre on inter-state supplies and imports, with the consuming state's share apportioned to it. This was mandated by the 101st Constitutional Amendment Act, 2016 (assented 8 September 2016), which inserted Article 246A granting concurrent taxing power to both Centre and States.
• Context: The idea of a nationwide GST was first proposed by the Kelkar Task Force on Indirect Taxes (2000); the Twelfth Finance Commission (2005) endorsed it. The Empowered Committee of State Finance Ministers (chaired by Asim Dasgupta) refined the dual model through years of Centre-State negotiations. India chose the dual model — rather than a unified single GST like Singapore or New Zealand — to preserve states' constitutional right to tax and protect their revenue autonomy, given that states depended heavily on VAT, CST, and other indirect taxes. Canada's federal-provincial GST (GST + PST/HST) served as a reference model. Under the dual structure: intra-state supply attracts CGST (to Centre) + SGST (to State) at equal rates; inter-state supply attracts IGST (collected by Centre, destination state's share transferred). The GST Council (Article 279A) — with Centre holding 1/3rd voting weight and States collectively 2/3rd, decisions by 3/4th majority — ensures consensus-based rate-setting. After the Supreme Court's Mohit Minerals ruling (2022), the Council's recommendations are persuasive, not binding, preserving cooperative federalism.
• UPSC Relevance: GS3 Economy — Prelims: dual GST means concurrent levy by Centre (CGST) and State (SGST) on same transaction, 101st Amendment (2016), Article 246A (concurrent power), IGST for inter-state supply, Kelkar Task Force (2000) first proposed GST, GST Council (Article 279A) — Centre 1/3rd, States 2/3rd, 3/4th majority; Mains: why India chose dual model over unified GST (federal structure, state revenue autonomy), comparison with Canada (dual) vs Singapore/NZ (unified) models, has dual GST strengthened or weakened state fiscal autonomy, Mohit Minerals (2022) implications — Council recommendations are advisory, not binding, impact on cooperative federalism.

Composition Scheme

• Pronunciation: /ˌkɒmpəˈzɪʃən skiːm/
• Definition: A simplified GST compliance scheme under Section 10 of the CGST Act, 2017, for small taxpayers with aggregate turnover up to Rs. 1.5 crore (Rs. 75 lakh for special category states — North-East and Himachal Pradesh), allowing them to pay tax at low flat rates (1% for manufacturers, 5% for restaurants, 0.5% for other suppliers) without the complexity of regular GST returns, but without eligibility to claim Input Tax Credit or make inter-state supplies. A separate provision for service providers with turnover up to Rs. 50 lakh allows composition at 6% (3% CGST + 3% SGST).
• Context: Introduced under Section 10 of the CGST Act, 2017, the Composition Scheme is a voluntary opt-in mechanism aimed at reducing compliance burden for micro and small businesses. Taxpayers opting for the scheme file a single quarterly return (CMP-08) and an annual return (GSTR-4), instead of the monthly GSTR-1 and GSTR-3B required of regular taxpayers. Key restrictions: no ITC claims, no inter-state supply, no e-commerce supply, and every bill must carry the words "composition taxable person, not eligible to collect tax on supplies." The Finance Act 2025 introduced further amendments to Section 10, including easing intra-state operations and relaxing the service cap to 15% for mixed suppliers. The scheme mirrors the Composition Levy that existed under earlier State VAT laws. Taxpayers can opt in using Form CMP-02 by 31 March of the preceding year (e.g., by 31 March 2026 for FY 2026-27). The scheme is critical for formalising small businesses — millions of micro enterprises use it as their entry point into the formal GST framework.
• UPSC Relevance: GS3 Economy — Prelims: Section 10 of CGST Act, turnover limit Rs. 1.5 crore (Rs. 75 lakh for special category states), flat rates (1% manufacturers, 5% restaurants, 0.5% others, 6% for service providers up to Rs. 50 lakh turnover), no ITC eligibility, no inter-state supply allowed, quarterly filing (CMP-08); Mains: has the Composition Scheme helped MSMEs reduce compliance burden (yes — simpler returns, lower rates; no — loss of ITC makes them uncompetitive against regular taxpayers), trade-off between simplification and ITC denial, role in GST formalisation of the informal sector, should the threshold be raised further to cover more businesses.

Zero-rated Supply

• Pronunciation: /ˈzɪəroʊ-reɪtɪd səˈplaɪ/
• Definition: Supplies taxed at 0% GST under Section 16 of the IGST Act where the supplier retains full eligibility to claim Input Tax Credit (ITC) refund on all inputs, ensuring the entire supply chain is free of domestic tax. Only two categories qualify: (1) exports of goods and services, and (2) supplies to Special Economic Zones (SEZ developers and units). The critical distinction from exempt supplies is that zero-rated suppliers can claim full ITC refund, while exempt suppliers cannot — making zero-rating export-friendly and exemption export-neutral.
• Context: Section 16(1) of the IGST Act defines zero-rated supplies. The mechanism ensures Indian exports are completely free of embedded domestic taxes, maintaining the destination-based principle — goods consumed abroad should bear the tax of the destination country, not India's GST. Exporters have two compliance options: (a) supply under a Bond or Letter of Undertaking (LUT) without paying IGST and claim refund of accumulated ITC; or (b) pay IGST at the time of export and claim refund of the IGST paid. The Finance Bill 2026 (Clause 141) proposed deletion of Section 13(8)(b) of the IGST Act, which previously caused certain Indian intermediary services (BPOs, agencies serving foreign clients) to be treated as domestic supplies — once deleted, these services qualify as exports and become zero-rated under Section 16. Automated risk-based refunds (90% provisional refund for exporters from 1 November 2025) under GST 2.0 reforms have significantly reduced the refund timeline, improving export working capital.
• UPSC Relevance: GS3 Economy — Prelims: Section 16 of IGST Act, only two categories (exports + SEZ supplies), zero-rated vs exempt supply (classic UPSC trap — zero-rated allows ITC refund, exempt does NOT), two options for exporters (LUT without payment + ITC refund, or pay IGST + claim IGST refund); Mains: impact of zero-rating on India's export competitiveness (ensures no domestic tax embedded in export prices), inverted duty structure and refund delays as challenges for exporters, SEZ policy and GST — are SEZ benefits being eroded, Finance Bill 2026 Section 13(8)(b) deletion — expanding the scope of zero-rated services exports.

GST Compensation

• Pronunciation: /dʒiː-ɛs-tiː ˌkɒmpɛnˈseɪʃən/
• Definition: A constitutional guarantee under the 101st Amendment Act, 2016, and the GST (Compensation to States) Act, 2017, that the Centre would compensate states for any revenue shortfall from GST implementation by assuring 14% compounded annual growth over a base year of 2015-16 revenue, for an initial period of five years (July 2017 to June 2022). The compensation was funded through a dedicated GST Compensation Cess levied on luxury and demerit goods (pan masala, tobacco, coal, motor vehicles, aerated beverages). The cess has been extended to 31 March 2026 to repay Centre's borrowings made during the COVID-19 pandemic.
• Context: States surrendered their independent power to levy multiple indirect taxes (VAT, entry tax, luxury tax, CST, purchase tax, etc.) when GST was introduced on 1 July 2017. To secure their consent, the Centre guaranteed that if a state's GST revenue grew below 14% per annum (compounded, using 2015-16 state revenue as the base), the Centre would make up the difference from the Compensation Cess pool. During COVID-19, cess collections fell sharply while protected revenue continued growing at 14%, creating a massive gap. The Centre borrowed Rs. 1.1 lakh crore in FY 2020-21 and Rs. 1.59 lakh crore in FY 2021-22 as back-to-back loans to states to cover the shortfall. The five-year compensation period ended in June 2022, but the cess levy was extended to March 2026 to service these borrowings. What happened after March 2026 (important Prelims fact): The GST Council opted to merge the compensation cess into GST rates for most goods — aerated beverages, luxury vehicles, coal, and similar items now face a consolidated 40% GST rate (previously 28% + cess), effective 22 September 2025. The separate cess structure for tobacco and beedi products continues beyond March 2026 until the full COVID-era loan liability is discharged; a date for discontinuation of tobacco cess to be notified separately. The GoM on compensation cess has recommended raising the statutory GST rate ceiling from 40% to 60% as a legal precaution. This resolution — merging cess into rates rather than simply abolishing it — means states that depended on compensation payments now face the challenge of standing on their own GST revenue collections from April 2026.
• UPSC Relevance: GS3 Economy — Prelims: 14% compounded annual growth guarantee, base year 2015-16, original 5-year period (July 2017 to June 2022), cess extended to March 2026 to repay COVID borrowings, cess levied on luxury and demerit goods (tobacco, aerated drinks, coal, motor vehicles, pan masala), Centre borrowed Rs. 2.69 lakh crore on behalf of states during COVID; Mains: was the 14% growth guarantee realistic (most states never achieved 14% own-revenue growth even before GST), impact of COVID on GST revenue and the compensation mechanism, post-March 2026 fiscal challenges for states (especially revenue-deficit states like Punjab, Kerala), should states have demanded a higher compensation period or a different formula, compensation cess as a case study in Centre-State fiscal relations and cooperative federalism.

Important for UPSC

Prelims 2027 Focus

• GST launched on 1 July 2017; 101st Amendment; Article 279A (GST Council)
• GST Council: FM is Chair; Centre 1/3rd vote, States 2/3rd; decisions by 3/4th majority
• Types: CGST, SGST, IGST, UTGST
• Items outside GST: petroleum, alcohol, electricity (constitutional bar for alcohol; political decision for petroleum)
• GST 2.0 (56th Council, 3 Sept 2025, effective 22 Sept 2025): 12% slab eliminated (items → 5% or 18%); 28% slab abolished for most goods (merged into 40%); new three-slab structure: 5%, 18%, 40%; individual life + health insurance (individual policies, ULIPs, family floaters) fully exempt; 36 life-saving drugs newly exempt
• Compensation Cess: 5-year guarantee at 14% growth; extended to March 2026; merged into 40% GST rate for most goods from 22 Sept 2025; tobacco/beedi cess continues separately until COVID loans fully repaid
• GSTAT (GST Appellate Tribunal): President Sanjaya Kumar Mishra (retd. Justice), principal bench Delhi, 31 state benches, 45 locations; operational from Sept–Dec 2025

Mains GS-3 Dimensions

• GST as a tool for cooperative federalism — has it strengthened or weakened state autonomy?
• Why should petroleum be brought under GST? Arguments for and against
• Impact of GST on the informal sector and MSMEs
• GST 2.0 rate rationalisation — is simplification sufficient?
• Mohit Minerals judgment (2022) — implications for Centre-State fiscal relations

Interview Angles

• "Has GST achieved 'One Nation, One Tax'?"
• "Why are some states reluctant about GST?"
• "How would you bring petroleum under GST?"

GST Infrastructure — GSTAT and E-invoicing

GST Appellate Tribunal (GSTAT)

The establishment of GSTAT addresses one of the biggest structural weaknesses in GST implementation since 2017 — an estimated 14,000+ pending GST appeals had no dedicated appellate forum.

E-invoicing Threshold Reduction

Mandatory GST e-invoicing (B2B) was progressively extended to smaller businesses:

As of August 2023, all GST-registered businesses with annual turnover exceeding Rs. 5 crore must generate e-invoices for B2B supplies. B2C e-invoicing is under active consideration for future phases — which would bring retail transactions into the digital audit trail.

UPSC angle: GSTAT (president: retd. Justice Sanjaya Kumar Mishra, May 2024; principal bench Delhi, 31 state benches, 45 locations) is a Prelims-ready fact. The structural argument — why GST needs a specialised tribunal rather than High Courts (domain expertise, faster disposal, lower litigation cost) — is a Mains GS3 governance angle. E-invoicing threshold progression (Rs. 500 crore → Rs. 5 crore) and its role in shrinking the invoice-matching fraud gap are standard Mains evidence points.

Current Affairs Connect

Link these static concepts with live developments:

Exam tip: After every GST Council meeting, note key rate changes and new items included/excluded. Read Ujiyari's economy coverage — GST Council decisions are the single most asked economy current affairs topic.

Sources: GST Council, 101st Amendment — PRS India, PIB — Economic Survey 2025-26, Mohit Minerals judgment — SCI