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Economic Terms & Concepts

The Hook: A Note That Became Worthless Overnight

In 1923, a German housewife needed a wheelbarrow full of banknotes just to buy a loaf of bread. Prices were doubling every few days. This was hyperinflation — one of the most dramatic economic concepts you will ever study. And here is the surprise: the same word "inflation" that destroyed savings in Germany appears in almost every SSC, Banking, and State PCS exam in India — sometimes directly, sometimes hidden inside a tricky statement.

Economics is not about memorising dry definitions. It is about understanding how money, markets, and governments behave — and examiners love testing exactly where students get confused. This chapter will make sure you never fall into those traps.

🎯 Learning Objectives

By the end of this chapter, you will be able to:

1. Define and distinguish core economic terms: GDP, GNP, NNP, inflation, deflation, stagflation.
2. Understand national income accounting and its methods.
3. Explain banking terms: repo rate, reverse repo rate, CRR, SLR.
4. Differentiate between budget terms: fiscal deficit, revenue deficit, budget deficit.
5. Recognise the examiner's favourite traps and avoid them.

Part 1: National Income — The Big Family (GDP, GNP, NNP)

What is GDP?

GDP (Gross Domestic Product) is the total market value of all final goods and services produced within the geographical boundary of a country in one year.

Key word: "Domestic" = within the country's borders. It does not matter who produces it — an Indian company or a foreign company operating in India. If it is produced inside India, it counts in India's GDP.

What is GNP?

GNP (Gross National Product) = GDP + Net Factor Income from Abroad (NFIA).

NFIA = income earned by Indians abroad minus income earned by foreigners in India.

Key word: "National" = by the nation's people, wherever they are in the world.

> Simple formula to memorise:
> GNP = GDP + (Income of Indians abroad − Income of foreigners in India)

NNP and the Role of Depreciation

NNP (Net National Product) = GNP − Depreciation.

Depreciation (also called *consumption of fixed capital*) is the wear and tear of machines, buildings, and equipment during production.

• Gross = before removing depreciation
• Net = after removing depreciation

Market Price vs Factor Cost

• Market Price (MP): includes indirect taxes, excludes subsidies.
• Factor Cost (FC): the actual cost of factors of production (land, labour, capital, entrepreneurship).

> Factor Cost = Market Price − Indirect Taxes + Subsidies

🧠 Active Recall: Without looking back — what is the difference between GDP and GNP in one line? What do we subtract from GNP to get NNP?

Methods of Measuring National Income

1. Product Method (Value Added Method) — sum of value added at each production stage.
2. Income Method — sum of all factor incomes (wages + rent + interest + profit).
3. Expenditure Method — sum of all final spending (Consumption + Investment + Government spending + Net Exports), i.e., C + I + G + (X − M).

Who Calculates National Income in India?

The Central Statistics Office (CSO), under the Ministry of Statistics and Programme Implementation (MoSPI), calculates India's national income. India's GDP base year was revised to 2011–12 (a frequently asked fact).

Part 2: Inflation and Its Family

Inflation

Inflation is a sustained rise in the general price level of goods and services over time, which reduces the purchasing power of money.

Types by speed:

• Creeping inflation: slow, mild rise (around 2–3% per year).
• Walking/Trotting inflation: moderate (roughly 3–7%).
• Running inflation: fast (around 10–20%).
• Hyperinflation (Galloping): extremely rapid, out of control (prices rising 50%+ per month).

Types by cause:

• Demand-Pull Inflation: too much money chasing too few goods — demand exceeds supply.
• Cost-Push Inflation: production costs (wages, raw materials, fuel) rise, pushing prices up.

The Confusing Cousins

🧠 Active Recall: Your friend says "inflation came down, so prices fell." Is he right? (No — falling inflation means prices are rising more slowly, i.e., disinflation. Prices fall only in deflation.)

Measuring Inflation in India

• WPI (Wholesale Price Index): measures price changes at the wholesale level; published by the Office of the Economic Adviser, Ministry of Commerce and Industry. Base year: 2011–12.
• CPI (Consumer Price Index): measures retail prices paid by consumers; published by NSO (National Statistical Office), MoSPI. Base year: 2012.
• RBI's inflation target under the monetary policy framework: 4% CPI inflation with a band of ±2% (i.e., 2%–6%).

Part 3: Banking & Monetary Policy Terms

RBI — The Central Bank

The Reserve Bank of India (RBI) was established on 1 April 1935 under the RBI Act, 1934. It was nationalised on 1 January 1949. Headquarters: Mumbai (originally Kolkata).

Key Policy Rates

• Repo Rate: The rate at which RBI lends short-term money to commercial banks against government securities. *Repo = Repurchase agreement.*
• Reverse Repo Rate: The rate at which RBI borrows money from banks (banks park their surplus funds with RBI).
• CRR (Cash Reserve Ratio): The percentage of a bank's total deposits (NDTL) that must be kept with the RBI in cash. Banks earn no interest on CRR.
• SLR (Statutory Liquidity Ratio): The percentage of deposits banks must maintain in the form of liquid assets — cash, gold, or approved government securities — with themselves.

> Memory trick: Repo = RBI Receives interest (banks pay RBI). Reverse Repo = banks receive interest from RBI. CRR = Cash with RBI (no interest). SLR = Securities with the bank itself.

How Rates Control Inflation

• Inflation high → RBI increases repo rate → loans become costly → less money in the market → demand falls → prices cool down.
• Growth slow → RBI decreases repo rate → cheaper loans → more spending → economy revives.

🧠 Active Recall: If RBI wants to reduce inflation, should it raise or cut the repo rate? What happens to CRR money — does the bank earn interest on it?

Other Important Banking Terms

• Bank Rate: The long-term rate at which RBI lends to banks without securities; it signals long-term policy stance.
• MSF (Marginal Standing Facility): Emergency overnight borrowing window for banks against SLR securities, at a rate higher than repo.
• Open Market Operations (OMO): RBI buying/selling government securities to control money supply.
• NPA (Non-Performing Asset): A loan on which interest or principal remains overdue for more than 90 days.

Part 4: Budget & Fiscal Terms

The Union Budget

Presented under Article 112 of the Constitution, where it is called the "Annual Financial Statement."

Types of Deficits

• Budget Deficit = Total Expenditure − Total Receipts (rarely used now).
• Revenue Deficit = Revenue Expenditure − Revenue Receipts. Shows the government is borrowing for day-to-day expenses.
• Fiscal Deficit = Total Expenditure − Total Receipts (excluding borrowings). This is the most watched number — it equals the government's total borrowing requirement.
• Primary Deficit = Fiscal Deficit − Interest Payments. Shows the deficit of the *current* year's policies.

> Mnemonic — "RF-P" ladder: Revenue deficit is part of Fiscal deficit; remove interest from Fiscal and you get Primary. Remember: *"Revenue lives inside Fiscal; Primary is Fiscal minus Interest."*

Direct vs Indirect Taxes

• Direct Tax: paid directly by the person on whom it is imposed — cannot be shifted. Examples: Income Tax, Corporation Tax.
• Indirect Tax: can be shifted to others. Examples: GST, Customs Duty.

GST (Goods and Services Tax) was launched on 1 July 2017 via the 101st Constitutional Amendment Act, 2016. It is a destination-based indirect tax. The GST Council is a constitutional body under Article 279A.

Part 5: Growth, Development & Miscellaneous Terms

• Economic Growth: quantitative increase in output/income (GDP rising).
• Economic Development: growth plus qualitative improvements — health, education, living standards.
• HDI (Human Development Index): published by UNDP; combines life expectancy, education, and per capita income.
• Poverty Line in India: historically estimated by the Tendulkar Committee (2009) and later the Rangarajan Committee (2014).
• Gini Coefficient: measures income inequality — 0 means perfect equality, 1 means perfect inequality.
• Lorenz Curve: the graphical curve behind the Gini coefficient.
• Phillips Curve: shows an inverse relationship between inflation and unemployment (short run).
• Laffer Curve: shows that beyond a point, higher tax rates reduce tax revenue.
• Fiat Money: currency with no intrinsic value, declared legal tender by government order (e.g., the rupee).
• Legal Tender: money that must be accepted by law for payment of debts.
• Demonetisation: withdrawal of a currency's legal tender status — India did this in 1946, 1978, and 2016.

🧠 Active Recall: Which curve links inflation and unemployment? Which committee's methodology followed Tendulkar for poverty estimation?

🧠 Mnemonics Corner

1. "G-D-N" chain: Gross → subtract Depreciation → Net. (Gross − Depreciation = Net, always.)
2. "D for Door" (GDP): Domestic = within the door (border) of the country. National = by the nation's people, anywhere.
3. "CRR = Cash, RBI, Zero interest" — three facts in one line.
4. "Stagflation = Stagnant + Inflation" — the word itself carries the definition.

⚠️ Caution: Examiner's Trap

Trap 1 — "लगभग सही कथन" (Almost-Correct Statement):
"CRR is maintained by banks with themselves in the form of cash and gold." — Sounds right, but this describes SLR. CRR is kept with the RBI, only in cash, and earns no interest. Examiners swap CRR and SLR features constantly.

Trap 2 — "नकारात्मक वाक्यांश" (Negative Wording):
"Which of the following is NOT a direct tax?" Students in a hurry miss the "NOT" and pick Income Tax. Slow down on every "NOT/EXCEPT" question — underline it mentally.

Trap 3 — "समान नाम/अवधारणा" (Similar-Sounding Concepts):
Disinflation vs Deflation — Disinflation = inflation rate falling (prices still rising); Deflation = prices actually falling. One word changes everything. Similarly, Repo vs Reverse Repo direction is frequently reversed in options.

🔁 Linguistic Bridge

🔗 Static-Dynamic Link

Repo rate, reverse repo rate, CRR, and SLR are static concepts but their values change whenever the RBI's Monetary Policy Committee (MPC) meets — roughly every two months (six times a year). For current values, always check the latest RBI monetary policy statement before your exam. The MPC has 6 members (3 from RBI, 3 appointed by the Government), headed by the RBI Governor — this structure is static and frequently asked.

📋 High-Yield Facts Table

📅 Revision Planner

• After 2 days: Blurt out from memory — the GDP→GNP→NNP chain, all four policy rates (repo, reverse repo, CRR, SLR) with one-line definitions, and the three deficits. Check against this chapter and mark what you missed.
• Weekly: Redo the ⚠️ Examiner's Trap box. Write the inflation family (inflation, deflation, disinflation, stagflation, reflation) from memory with one example each.
• Monthly (blurting): Take a blank sheet and reproduce the High-Yield Facts Table entirely from memory. Any fact you cannot recall goes on your personal flashcard list for daily review.

You now own the vocabulary of economics that examiners test again and again. Review on schedule — and these terms will feel like old friends in the exam hall.