The Final Sheet: Master Revision for the Indian Economy

Revision is not re-reading, it is re-attacking. This is the article you open in the last week before the exam: every recurring number, every committee, every mnemonic and every PYQ pattern from the economy library, compressed into one sitting. Read it with a pen; test yourself on the tables before you peek.

The structural transformation, in one table

India skipped the textbook script: instead of moving from farm to factory to services, it leapt from farm to services while manufacturing stayed thin. That single fact organises half the economy syllabus:

Base-year alert: the long-used GDP base year of 2011-12 was rebased to 2022-23 with a new series released in February 2026, if a question cites growth rates, check which series it means. (Flagged as a source conflict in the notes below.)

The macro dashboard, numbers that recur

Commit this panel; mains answers without data are essays, not economics:

Fiscal

• Fiscal deficit: 4.3% of GDP (BE 2026-27), down from 4.4% (RE 2025-26), the sub-4.5% pledge met.
• Logic chain: high fiscal deficit → twin-deficit spillover into the CAD.

External

• CAD: $23.3 billion, 0.6% of GDP (FY24-25), "low and manageable".
• Merchandise deficit $282.8 bn; services surplus $188.6 bn; remittances $135.5 bn.
• Forex reserves: record territory near $700 billion (early 2026), covering ~11 months of imports.
• Gross FDI: $81 billion in FY25, a three-year high.

Money and inclusion

• UPI: about 26,820 crore transactions (roughly 22.35 billion a month), ₹314 lakh crore in FY25-26 (85.5% of retail digital payments).
• Jan Dhan: 55.7 crore accounts; female LFPR 40% (2025).
• Extreme poverty: 16.2% → 2.3% (2011 to 2022-23, $2.15 line); national MPI 29.17% → 11.28%.

What moved recently: the 2025-26 update strip

Revision decays fastest on moving numbers, so pin each recurring figure to its period before quoting it:

Rates, ratios and thresholds, the prelims traps

UPSC rarely asks for today's repo rate (it moves); it asks what the terms mean and what the thresholds are. Lock these:

Policy-rate logic (mechanics in the monetary-policy article)

• Repo: RBI lends to banks; reverse repo: RBI borrows from banks; CRR/SLR: reserves banks must park.
• Raising rates = dearer money = inflation control; cutting = growth push.

Thresholds that never change

• 10%: FDI equity norm (Mayaram Committee).
• $250,000: LRS annual remittance limit per resident individual.
• 40:60: HAM funding split (government:developer).
• 39:39:22: NIP cost-sharing (Centre:States:private).
• 0 to 100: Gini scale; 12: indicators in India's national MPI.
• 1994: full current-account convertibility; capital account: partial.

Committees, economists and institutions, the name bank

Must-know (from this library's sources)

• Arvind Mayaram Committee: 10% equity = FDI.
• S.S. Tarapore Committee (1997): roadmap preconditions for capital-account convertibility, fiscal consolidation, inflation target, stronger financial system.
• Shivaraman Committee: led to NABARD's creation (Sixth Plan).
• Raj Krishna (1978): coined the "Hindu growth rate" (~3.5%).
• P.C. Mahalanobis: Second Plan architect; founded the Indian Statistical Institute.

Live in their own articles (cross-reference, don't re-learn here)

• Poverty measurement (Tendulkar, Rangarajan), poverty and unemployment article.
• Monetary framework (Urjit Patel Committee, MPC), monetary policy article.
• Tax reform (Kelkar) and fiscal rules (N.K. Singh FRBM review), fiscal policy and taxation articles.

Mnemonics, memory hooks that survive exam pressure

Current account components: G-SIT

• Goods, Services, Income, Transfers, sit the current account down with G-SIT.

PPP models: ownership rises, then the exceptions

• BOT → BOOT → BOO: increasing private ownership (Transfer, then Own-Transfer, then Own forever).
• EPC: government pays everything. HAM: hybrid, 40-60. Swiss Challenge: unsolicited bid, open to challengers.

WTO principles: M&N

• Most Favoured Nation + National Treatment, M&N, like the chocolate, coats every trade deal.

Twelve plans in one line

• 1-Harrod, 2-Mahalanobis, 3-Gadgil, 4-Stability, 5-Garibi, 6-NABARD, 7-FoodWork, 8-LPG, 9-Justice, 10-Poverty, 11-Inclusive, 12-Sustainable.

NITI vs Planning Commission

• NITI = BAG: Bottom-up, Advisory (no funds), Governing Council of CMs.
• PC = TAF: Top-down, Allocated funds, Five-year plans.

PYQ trend analysis, where the marks actually go

Across 2013-2026 GS-3 economy mains, the frequency map is unmistakable. Renewable energy (9 questions) and Budget/Fiscal policy (8) are the twin peaks, energy security, solar economics and deficit management return almost yearly. Food processing (7) is the sleeper hit. The next tier, BoP/FDI/external financing (5), PPP-infrastructure (5), manufacturing (5), LPG reforms (4), inclusive growth (4+), rewards the structural-transformation narrative. GST (3), growth/planning (3), digital payments (1), NITI vs Planning Commission (1), labour codes (1), trade/protectionism (1) complete the board; note how the 2025-26 papers tilt toward current shocks (protectionism, energy security, digitalisation). In prelims, the repeating themes are RBI functions, inflation indices, banking terms and fiscal concepts, definitional precision beats data memorisation there. The meta-lesson: every mains answer in this paper should carry at least two data points and one committee or scheme name; the questions are designed to reward exactly that.

Key Terms

• Structural transformation: Structural transformation is the long-run shift of an economy's output and workforce from agriculture toward industry and then services, raising productivity and incomes. Economists like Arthur Lewis modelled it as labour moving from low-productivity traditional sectors to modern ones. For UPSC, it frames GS-3 answers on growth, employment, manufacturing policy and why India's services-led path is debated.
• 18% of GDP: The share of agriculture and allied sectors in India's GDP, about 18% in FY25, even though the sector employs roughly 43% of the workforce: the classic structural-transformation mismatch in which most workers remain in the lowest-productivity sector. For UPSC, the gap between output share and employment share is the standard entry point to the jobless growth and disguised unemployment debate. Services contribute about 54 to 55% of GDP with under 30% of jobs, the mirror image of agriculture's employment-heavy, output-light profile.
• 43% of employment: The 43 percent is agriculture's share of India's employment (PLFS 2025), set against its roughly 18 percent share of GDP. The gap between the two shares is the classic disguised-unemployment and low-productivity story: nearly half the workforce produces under a fifth of output. For UPSC it is the defining number of India's structural-transformation narrative, contrasted with services at 55 percent of GDP but under 30 percent of jobs.
• 55% of GDP: 55% of GDP is the services sector's share of gross value added in FY25, reported at 55.3 per cent in the Economic Survey 2024-25, up from 50.6 per cent in FY14. The steady rise reflects the growing weight of trade, finance, IT and professional services in national output. For UPSC, the figure is the go-to statistic for describing India as a service-led economy and for questions on structural transformation in GS-3. the Economic Survey 2024-25 reporting services at 55.3 per cent of GVA in FY25
• 30% of jobs: 30% of jobs is a labour-market statistic indicating that a particular sector, category or segment accounts for roughly three-tenths of employment. Without the sector and year from the original text, it has no standalone UPSC meaning. For UPSC, employment shares are central to debates on jobless growth, informality and the demographic dividend.
• Dashboard: In UPSC answers, a dashboard is a single-screen visual display that consolidates key indicators, maps and trends for monitoring a scheme, programme or sector in real time. Governance and data-driven administration questions use it to discuss transparency, accountability and evidence-based policy. The term carries no special technical meaning beyond this administrative sense.
• Committees: In UPSC polity, 'committees' most often means parliamentary committees: small groups of MPs that scrutinise legislation, budgets and executive action in detail. Financial committees like the Public Accounts Committee and Estimates Committee, plus Department-related Standing Committees, form a mini-parliament that keeps oversight alive between sessions. Their reports, though advisory, carry moral weight. The topic matters because committee reform, opposition chairing conventions and scrutiny quality are recurring mains themes. the Public Accounts Committee examining CAG reports on government spending
• Mains magnets: Mains magnets is shorthand for the high-yield topics that reliably attract questions in the UPSC mains written examination, such as federalism, climate justice, artificial intelligence ethics and women's reservation. Serious aspirants keep a running list of such themes with facts, data and case studies ready for answers. For UPSC it is an answer-enrichment strategy: prepared material on magnet topics raises scores across GS papers.
• Mnemonics inside: As an extraction fragment, 'Mnemonics inside' points to the memory aids aspirants use to master UPSC's vast factual syllabus: acronyms, stories and visual hooks that encode lists like fundamental rights, Ashokan edicts or river tributaries. Used judiciously, they speed prelims recall; used blindly, they substitute for understanding. For UPSC preparation, mnemonics are a study technique, not a substitute for conceptual clarity.
• Sector: A sector is a broad division of the economy grouped by the nature of economic activity: primary (agriculture, mining), secondary (manufacturing, construction) and tertiary (services). Sectoral shares of GDP and employment reveal a country's stage of development and structural change. For UPSC, sectors are central to GS-3 Indian economy: growth trends, employment patterns and the shift toward services are recurring prelims and mains themes. The tertiary (services) sector of the Indian economy
• Share of GDP: Share of GDP is the proportion of a country's gross domestic product contributed by a sector, state or activity, expressed as a percentage. It is calculated from national accounts data and shows the structure of the economy, for example the rising share of services or the falling share of agriculture in India. It matters for UPSC because prelims tests sectoral shares and growth rates, while mains asks how shifts in GDP shares reflect structural transformation and employment challenges.
• Share of employment: Share of employment is the proportion of a country's total workforce engaged in each sector or category, usually expressed as a percentage of total employment. It is a core labour-market indicator drawn from surveys such as India's Periodic Labour Force Survey, revealing structural shifts like the movement of workers from agriculture to services. For UPSC, it underpins prelims questions on employment statistics and mains answers on structural transformation and jobless growth.
• Agriculture: For UPSC, agriculture is India's largest employer, engaging close to half the workforce, while contributing roughly 18 percent of gross value added, a structural gap that explains rural distress and the push for allied sectors and food processing. It depends heavily on the monsoon and is shaped by MSP, subsidies, and irrigation policy. For UPSC, it is the core of GS-3 economy and connects to environment and social issues. Example: null.
• Industry: In UPSC usage, industry denotes the organized production of goods and services through manufacturing and related activities, and it is examined through its contribution to GDP, employment, regional development, and linkages with agriculture and services. Questions span industrial policy, MSMEs, and industrial corridors. For UPSC it is a core GS-3 economy theme linking growth, jobs, and infrastructure.
• Services: Services is the tertiary sector of the economy, covering trade, transport, finance, IT, tourism, health, education and public administration rather than goods production. It is identified by intangibility, skill intensity and high value addition. It accounts for over half of India's GDP and is a major source of exports and urban employment. It matters for UPSC because prelims tests sector shares and services-led growth, while mains asks whether India can sustain growth without a matching manufacturing base. India's IT and business process management exports
• Base-year alert: Base-year alert is a caution applied in UPSC answers and data interpretation: when the base year of an index or series changes, growth rates and comparisons across periods can mislead. India's GDP series, for example, moved from the 2004-05 base to 2011-12, altering measured growth. It reminds aspirants to check the base year before comparing statistics across time, a standard habit for economy data questions.
• GDP base year of 2011-12: The 2011-12 base year was the reference year India used for national accounts from the 2015 revision, replacing 2004-05, to compute GDP at constant prices. Rebasing updates the weights to reflect structural changes in the economy. In February 2026, MoSPI moved to a new 2022-23 base series. For UPSC, base-year revision is a recurring question on the measurement of growth and the comparability of GDP data.
• 4.3% of GDP: The 4.3 percent of GDP is India's Centre-level fiscal deficit budgeted for 2026-27, down from 4.4 percent in 2025-26. It marks the meeting of the government's sub-4.5 percent pledge under its fiscal-consolidation glide path. For UPSC it is a current-affairs dashboard number: the fiscal deficit feeds the twin-deficit chain into the current account, and the figure is the one mains answers cite when judging fiscal discipline.
• about 26,820 crore transactions (roughly 22.35 billion a month), ₹314 lakh crore: These figures capture the scale of India's Unified Payments Interface. In FY 2025-26, UPI processed about 24,162 crore transactions (241.62 billion), worth nearly Rs 314 lakh crore, according to government and NPCI data, making it the world's largest retail fast-payment system by volume, with monthly run rates above 22 billion transactions. It matters for UPSC because Digital India, fintech, and payment-system statistics feature in economy and current-affairs questions. National Payments Corporation of India's Unified Payments Interface
• 55.7 crore: The figure 55.7 crore is a numerical quantity (557 million) that appears in Indian government and media reports, for example describing population segments, scheme coverage, or digital transactions. It has no standalone technical meaning in the UPSC syllabus and is meaningful only with its subject attached. For UPSC, such precise statistics typically surface as data points in questions on economy, health, or welfare schemes, where the reported context, not the number alone, is what candidates must know.
• Arvind Mayaram Committee: The Arvind Mayaram Committee (2014) was constituted to rationalise the definitions of FDI and foreign institutional investment. It recommended that foreign investment of 10% or more in a listed company be treated as FDI (below that as FPI), that all investment in unlisted companies be treated as FDI, and that composite sectoral caps be adopted. Its report, accepted by the government, reshaped India's foreign investment classification. the 10% threshold now used to distinguish FDI from FPI.
• S.S. Tarapore Committee: The S.S. Tarapore Committee (1997) on Capital Account Convertibility recommended a phased move to full convertibility of the rupee, conditional on fiscal consolidation, low inflation and banking-sector strength; a second committee in 2006 reiterated the roadmap. Its preconditions framework is the standard UPSC reference for why India retains capital controls. Cited in answers explaining India's calibrated approach after the 1997 Asian financial crisis.
• Shivaraman Committee: The Shivaraman Committee is the RBI-constituted Committee to Review Arrangements for Institutional Credit for Agriculture and Rural Development (CRAFICARD), chaired by B. Sivaraman and formed on 30 March 1979. Its interim report recommended a dedicated apex institution for rural credit, leading to NABARD's creation in 1982. For UPSC, the committee is a high-yield prelims fact on agricultural credit and rural banking history. recommended the creation of NABARD (established 12 July 1982)
• Raj Krishna: Raj Krishna was an Indian economist (1926-2014) famous for coining the phrase Hindu rate of growth to describe India's roughly 3.5 percent annual GDP growth from the 1950s to the 1970s. A Delhi School of Economics professor, he argued that low growth reflected policy choices and institutional constraints rather than any cultural trait. He matters for UPSC in GS-3 economics, where the Hindu rate of growth frames mains discussions of planning-era performance, the 1991 reforms and India's growth acceleration. he coined the phrase in the late 1970s
• P.C. Mahalanobis: P. C. Mahalanobis (1893-1972) was the Indian statistician who founded the Indian Statistical Institute in Kolkata in 1931 and pioneered the Mahalanobis distance in statistics. As the architect of the Second Five Year Plan's heavy-industry strategy, he shaped India's early planning. For UPSC, he links statistics, institution-building and the planning era, and is a recurring prelims personality. Founded the Indian Statistical Institute, Kolkata, 1931
• BOT → BOOT → BOO: This arrow sequence describes a spectrum of private-sector participation in infrastructure, ordered by increasing private ownership. BOT (Build-Operate-Transfer) returns the asset to the state, BOOT (Build-Own-Operate-Transfer) adds temporary legal ownership during the concession, and BOO (Build-Own-Operate) lets the private firm own the asset permanently while selling its output under long-term agreements. For UPSC, the spectrum tests how risk, ownership, and control are allocated across PPP variants in infrastructure. Independent power producers building thermal plants on a BOO basis and selling electricity to state discoms through long-term power purchase agreements.
• EPC: EPC (Engineering, Procurement and Construction) is a project-delivery model in which a single contractor designs, builds and hands over a project to the government for a fixed payment. The government bears the demand and revenue risk, unlike BOT or HAM models. For UPSC, it is asked in infrastructure and PPP questions. Many national highway sections have been built through EPC contracts awarded by the National Highways Authority of India.
• HAM: HAM (Hybrid Annuity Model) is a highway construction model in which the government pays forty percent of the project cost during construction while the private concessionaire funds the rest and recovers it as annuity payments over the concession period. Adopted by NHAI to revive stalled public-private road projects, it shares risk between state and builder. For UPSC, it illustrates infrastructure financing innovation. NHAI adopted HAM after 2016 to restart highway projects stalled for lack of private capital.
• Swiss Challenge: The Swiss Challenge is a public procurement method in which an unsolicited proposal from a private party is published and opened to competing counter-proposals, with the original proposer given the right to match the best bid. It invites private innovation while preserving competition in infrastructure projects. For UPSC economy and governance it is the standard term for procurement models built on unsolicited bids. Its use by Indian Railways for the proposed redevelopment of railway stations on a public-private partnership basis.
• BAG: BAG is a mnemonic for NITI Aayog's design: Bottom-up planning, an Advisory role with no funds to disburse, and a Governing Council of chief ministers, contrasted with the Planning Commission as TAF (Top-down, Allocated funds, Five-year plans). It captures the shift from centralized plan allocation to cooperative federalism after 2015. For UPSC, it is a quick revision hook for the NITI versus Planning Commission comparison in GS-3. The site's economy article pairs BAG for NITI Aayog with TAF for the Planning Commission to contrast bottom-up advisory planning with top-down fund allocation.
• TAF: TAF is the Technology Adoption Fund, a Rs 500-crore fund launched by IN-SPACe in 2025 to help Indian space startups and MSMEs turn early-stage technologies into commercially viable products. It funds up to 60 percent of project costs for startups and MSMEs (40 percent for larger firms), capped at Rs 25 crore per project, targeting import substitution. For UPSC, it is a current-affairs example of private-sector space reforms and Atmanirbhar Bharat in GS-3 science and technology. IN-SPACe launch, 2025
• Renewable energy (9 questions: Renewable energy is energy drawn from naturally replenishing sources such as solar, wind, hydro, biomass, and geothermal power. India has set ambitious targets including 500 GW of non-fossil fuel capacity by 2030 under its Panchamrit pledges announced at COP26. It matters for UPSC across GS-3 on energy security and climate action, and in prelims for facts on solar parks, wind corridors, and national missions. The Bhadla Solar Park in Rajasthan, among the largest solar parks in the world
• Budget/Fiscal policy (8: Fiscal policy is the government's use of taxation, public spending and borrowing to influence the economy, distinct from monetary policy which is run by the Reserve Bank of India. It covers deficits, subsidies and counter-cyclical stimulus, and in India operates within the framework of the FRBM Act. For UPSC it underpins GS-3 questions on growth, inflation, fiscal consolidation and the Union Budget, and links to monetary policy coordination. The pandemic-era fiscal stimulus packages of 2020 were a textbook counter-cyclical use of fiscal policy.
• Food processing (7: Food processing is the industry that converts raw agricultural produce into finished or semi-finished food products through cleaning, grading, packaging, preservation, and value addition. It links farmers to consumers, reduces post-harvest losses, and creates rural employment. For UPSC, it is a sunrise sector under the Ministry of Food Processing Industries, tying agriculture, industry, and employment together. The Pradhan Mantri Kisan SAMPADA Yojana funds Mega Food Parks, cold chains, and agro-processing clusters across India.
• RBI functions, inflation indices, banking terms and fiscal concepts: This is a UPSC economy topic cluster grouping the Reserve Bank's core functions such as monetary policy, currency issue and banker to the government, with price indices like CPI and WPI, banking terms like CRR, SLR and repo rate, and fiscal concepts like deficits and the FRBM framework. It appears as a study label rather than a single term, and it is high-yield for both prelims and mains economy answers. It carries no single fixed example, so none is given.
• at least two data points and one committee or scheme name: At least two data points and one committee or scheme name is a popular mains answer-writing rule: every argument in a GS answer should be backed by at least two concrete data points and the name of one relevant committee or government scheme. It converts general statements into evidence-rich, scoreable answers. It matters for UPSC because data-and-scheme enrichment is a standard expectation in GS mains evaluation.
• The Goods and Services Tax is: The Goods and Services Tax is India's unified indirect tax, launched on 1 July 2017 through the 101st Constitutional Amendment, replacing central excise, service tax and state VATs with a destination-based dual levy of CGST plus SGST, and IGST on inter-state trade. The GST Council under Article 279A governs rates and rules. It matters because it reshaped fiscal federalism, logistics and formalization, and remains among the most tested UPSC economy topics in both prelims and mains. launched 1 July 2017
• The GST Council (Article 279A: The GST Council is the joint federal body created by the 101st Constitutional Amendment of 2016 under Article 279A to decide GST rates, exemptions, thresholds and rules. Chaired by the Union Finance Minister, it gives the Centre one-third of the weighted votes and the states two-thirds, with decisions requiring a three-fourths majority. It matters because it is the operating core of cooperative federalism in taxation and a staple UPSC prelims and mains topic on fiscal federalism. created by the 101st Amendment; first meeting September 2016
• Compensation: Compensation is payment made to a person for loss, damage, or the acquisition of their property or rights. In UPSC contexts it appears in land acquisition law, where the 2013 Act mandates market-value-based payment with rehabilitation; in environmental law through the polluter-pays principle; and in criminal law through victim compensation schemes. For UPSC, it links fundamental rights, especially Article 300A on property, with welfare and justice. Under the Right to Fair Compensation and Transparency in Land Acquisition Act, 2013, rural landowners receive up to four times the market value of acquired land.
• Inflation indices: Inflation indices are the statistical measures used to track price changes, notably the Consumer Price Index (CPI), which reflects retail prices faced by households, and the Wholesale Price Index (WPI), which tracks prices at the wholesale level. India targets CPI inflation under its monetary policy framework. For UPSC they are central to GS-3 questions on inflation, monetary policy, and price stability.
• Banking stress: Banking stress is the condition in which a bank or the banking system faces pressure on asset quality, profitability, liquidity or capital adequacy, often reflected in rising non-performing assets. It can force credit contraction, raise borrowing costs and slow growth, and may require government recapitalisation. For UPSC it is the central concept behind India's NPA problem and the reforms under the Insolvency and Bankruptcy Code and bank mergers.
• Financial markets: Financial markets are platforms where savers and borrowers transact in instruments like shares, bonds, and derivatives. They split into money markets for short-term debt regulated by the RBI and capital markets for long-term securities regulated by SEBI, alongside forex and commodity segments. Efficient markets allocate capital, discover prices, and manage risk. For UPSC they matter for answers on financial inclusion and regulation. The 1992 Harshad Mehta securities scam exposed settlement-system gaps and hastened the creation of the National Stock Exchange.
• Deficit types and the FRBM glide path: refers to the family of deficit measures, fiscal, revenue, primary, effective revenue and monetised deficits, together with the Fiscal Responsibility and Budget Management Act's consolidation roadmap. The post-Covid glide path aimed for a fiscal deficit below 4.5 percent of GDP by 2025-26, after which the framework shifted toward a debt-to-GDP anchor. For UPSC this pairing is the standard frame for Budget and fiscal-policy questions. the Union Budget 2025-26 estimated the fiscal deficit at 4.4 percent of GDP, meeting the glide-path goal
• Farm support: Farm support is government assistance to farmers through instruments such as minimum support prices, input subsidies on fertilizer, power and credit, income transfers and crop insurance. It stabilizes farm incomes and sustains food production, but raises questions of fiscal burden, market distortion and WTO subsidy limits. For UPSC it is central to debates on agriculture, subsidies and food security in GS-3. PM-KISAN's income support of Rs 6,000 per year paid to landholding farmer families in three instalments.
• Digital money: Digital money, in a UPSC context, is money held and transferred in electronic form rather than as physical cash or coins. It includes bank deposits moved through apps, mobile wallet balances, UPI transfers and central bank digital currencies. Its spread affects monetary policy transmission, financial inclusion, tax compliance and the fight against black money. For UPSC the term matters for economy answers on payment systems, the RBI and the digitalisation of finance.
• Labour codes (2024 PYQ: Labour codes are the four statutes, the Code on Wages (2019), the Industrial Relations Code (2020), the Code on Social Security (2020) and the Occupational Safety, Health and Working Conditions Code (2020), that consolidate 29 labour laws. They came into force on 21 November 2025, extending social security to gig workers and fixing a national floor-wage framework. They matter for UPSC because labour reform appeared in the 2024 prelims and the codes are now live GS-2 and GS-3 current affairs. the Code on Wages, 2019
• National income trio: The national income trio refers to the three landmark milestones in Indian national income estimation: Dadabhai Naoroji's first estimate for 1867-68, V.K.R.V. Rao's first scientific estimate for 1931-32, and the National Income Committee of 1949 under P.C. Mahalanobis with D.R. Gadgil and V.K.R.V. Rao as members. Together they trace the evolution from early guesswork to systematic measurement. It matters for UPSC GS-3 prelims, where the first estimator and the 1949 committee are classic one-mark questions. The National Income Committee was appointed in 1949 under the chairmanship of P.C. Mahalanobis
• Disguised unemployment is: Disguised unemployment is a condition in which more workers are engaged in an activity than are actually needed, so the marginal productivity of the extra workers is zero or negative and their removal would not reduce output. It is most visible in Indian agriculture, where entire families work plots that need far fewer hands. For UPSC, it explains hidden rural underemployment and the case for shifting labour to industry and services.
• Premature deindustrialisation is: Premature deindustrialisation is the phenomenon, named by economist Dani Rodrik, in which developing countries reach peak manufacturing shares of employment and output at much lower income levels than the early industrializers did, and then begin losing industry. Workers shift instead into low-productivity informal services, weakening the classic manufacturing-led growth path. It matters for UPSC because GS-3 economy questions on Make in India and structural transformation increasingly invoke this concept. Dani Rodrik (2015)

GST: the one-tax recap

The Goods and Services Tax is India's destination-based indirect tax, launched on 1 July 2017 through the 101st Constitutional Amendment, subsuming excise, service tax, VAT and a thicket of cesses into one levy with an input-tax-credit chain. The structure: a dual GST, CGST plus SGST on intra-state supply and IGST on inter-state supply; four slabs of 0%, 5%, 12%, 18% and 28%, plus a compensation cess on sin and luxury goods. The GST Council (Article 279A) is chaired by the Union Finance Minister, with every state finance minister as member; decisions need a three-fourths majority, with the Centre holding one-third weight and the states two-thirds. Compensation: states were guaranteed 14% annual revenue growth for five years (till June 2022), funded by the compensation cess, which was later extended to repay back-to-back loans taken during the shortfall years. Three mains PYQs and counting, this is the single most recycled tax topic.

Dropped themes, restored

• Inflation indices: CPI (2024 series) tracks retail prices and anchors the RBI's 4% (plus/minus 2%) inflation target; WPI (base 2011-12) tracks wholesale prices across primary articles, fuel and power, and manufactured products. Prelims staple: which index for which purpose.
• Banking stress: an NPA is a loan whose interest or instalment is overdue by 90-plus days; the Insolvency and Bankruptcy Code, 2016 created time-bound resolution (330 days) through the NCLT with a Committee of Creditors calling the shots, the answer to the twin-balance-sheet legacy.
• Financial markets: SEBI regulates the securities market: equity and debt, IPOs, mutual funds and SIP flows, the capital-raising machinery behind the growth story.
• Deficit types and the FRBM glide path: revenue deficit is revenue spending exceeding revenue receipts; fiscal deficit is the total borrowing requirement; primary deficit is fiscal deficit minus interest payments. The FRBM Act's anchor is 3% of GDP; the N.K. Singh committee aimed for 2.5%; the Budget Estimate for 2026-27 stands at 4.3% (see the dashboard).
• Farm support: MSP is the minimum support price the CACP recommends for 22 mandated crops (plus FRP for sugarcane); the PDS under the National Food Security Act, 2013 delivers 5 kg of foodgrain per person per month (free under PMGKAY); food processing (SAMPADA/PMKSY, mega food parks) is the value-addition bridge.
• Digital money: the e-rupee (CBDC) is the RBI's pilot-stage digital currency in retail and wholesale versions; crypto is taxed at 30% plus 1% TDS but is not legal tender; gig and platform work got its first legal recognition in the Code on Social Security, 2020, with NITI Aayog projecting 6.7% of non-agricultural workers by 2029-30.
• Labour codes (2024 PYQ): four codes, Wages (2019), Industrial Relations, Social Security (2020), and Occupational Safety, Health and Working Conditions (2020), consolidating 29 central labour laws.
• National income trio: GDP is the value of final goods and services produced within the country's borders; GNP is GDP plus net factor income from abroad; NNP is GNP minus depreciation. The demographic dividend is the growth bonus from a rising working-age share of population; India's window runs roughly from 2005 to 2055.
• Disguised unemployment is employment of more workers than a task needs, so the marginal worker's productivity is near zero, the classic surplus-labour farm case used in the dashboard above.
• Premature deindustrialisation is manufacturing's share of output and employment peaking at far lower income levels than in early industrialisers, before the economy gets rich, the puzzle behind India's missing middle.

The curves UPSC recycles

A handful of curves and laws return in prelims and mains with metronomic regularity. Learn each as a definition plus its exam use: