Money and Banking

PART 1 — Quick Reference Tables

Table 3.1 — Functions of Money

The most critical function is medium of exchange — it eliminates the need for a double coincidence of wants that crippled barter economies.

Table 3.2 — Money Supply Measures in India (RBI Classification)

Key Relationship: M0 → M1 → M2 → M3 → M4 (each successive measure is broader and less liquid)

The RBI monitors M3 (Broad Money) as the primary monetary aggregate for policy purposes. M1 is the most liquid form.

Table 3.3 — Key Monetary Policy Rates (As of February 2026)

Source: RBI Monetary Policy Committee, February 2026. Repo rate cut by 25 bps from 6.50% to 6.25% in February 2026 MPC meeting.

Table 3.4 — RBI: Key Facts and Functions

Table 3.5 — Banks vs Non-Banking Financial Companies (NBFCs)

PART 2 — Chapter Narrative

From Barter to Money: The Evolution of Exchange

Human societies began with barter — the direct exchange of goods for goods. A farmer with surplus wheat would exchange it for tools from a blacksmith. Simple in theory, this system had serious practical problems.

Problems with Barter:

1. Double coincidence of wants: For an exchange to occur, each party must want exactly what the other has to offer. A wheat farmer needing shoes must find a cobbler who also wants wheat — at the same time, same place, same quantities.

2. No common measure of value: How many kilograms of wheat equals one pair of shoes? A barter economy requires knowing the exchange ratio of every pair of goods. With 1,000 goods, that is 499,500 different exchange ratios.

3. Lack of store of value: Agricultural produce perishes. Surplus wheat cannot be stored indefinitely to save purchasing power for the future.

4. Indivisibility: A cow cannot be divided into parts for small transactions. How do you pay half a cow for a small service?

5. No standard for deferred payments: If you borrow goods today with a promise to repay later, what exactly do you repay? How is value preserved over time?

Money solved all these problems by performing four critical functions.

Functions of Money

1. Medium of Exchange

Money is universally accepted in exchange for goods and services. Unlike barter, money eliminates the double coincidence of wants. The farmer sells wheat for money, then uses that money to buy shoes — two separate transactions with two separate parties.

This function is so fundamental that economists sometimes define money simply as "anything that functions as a medium of exchange."

2. Unit of Account

Money provides a common denominator for expressing the value of all goods and services. Instead of thousands of barter ratios, all prices are expressed in rupees. This makes economic calculation, accounting, and comparison possible.

3. Store of Value

Money holds purchasing power over time. A person who earns money today can save it and spend it in the future. Unlike perishable goods, money (in modern economies with low inflation) retains its value.

However, inflation erodes the store-of-value function. High inflation — like India's double-digit inflation of the 1970s–80s — causes people to convert money into real assets (gold, land) quickly, undermining this function.

4. Standard of Deferred Payment

Money enables credit transactions. Loans are taken and repaid in money terms. All debt contracts — mortgages, bonds, salary agreements — are denominated in money, providing a clear standard for future payment obligations.

💡 Explainer: Why Money Has Value

Modern currency (rupee notes) has no intrinsic value — the paper costs far less than ₹100. Money has value because:

• Government fiat: The government declares it legal tender — legally acceptable for settling debts.
• General acceptability: Everyone accepts money because they expect others to accept it.
• Scarcity: Money supply is controlled; if the government printed unlimited money, it would lose value (hyperinflation).
• Institutional trust: Central banks and banking systems maintain confidence in currency.

This is why economists call modern currency fiat money — it has value by government decree, not intrinsic worth.

Types of Money

1. Commodity Money

Goods that have intrinsic value and also circulate as money. Examples: gold coins, silver coins, salt (in ancient trade routes), cattle.

Problem: Difficult to carry, divide, and standardise.

2. Metallic Money / Coins

Standardised metals (gold, silver, copper) stamped by the state as legal tender. India minted gold and silver coins from the Maurya period onwards.

Full-bodied coins: Face value = metal value. Token coins: Face value > metal value (modern coins).

3. Paper Money (Fiat Money)

Banknotes that are legal tender by government decree. Originally, paper money was backed by gold (gold standard). Today, all major currencies are fiat money — backed only by government authority and trust.

In India: ₹2, ₹5, ₹10, ₹20, ₹50, ₹100, ₹200, ₹500, ₹2,000 notes (₹2,000 discontinued from circulation in 2023).

4. Bank Money (Credit Money / Fiduciary Money)

Deposits in bank accounts — demand deposits and time deposits. This is the largest component of modern money supply. When a bank grants a loan, it creates a deposit in the borrower's account — creating new money. This is the basis of credit creation.

5. Legal Tender

Legal tender is money that must be accepted by law for settling debts. In India:

• Limited legal tender: Coins up to ₹1,000 per transaction (by denomination limits)
• Unlimited legal tender: Banknotes — must be accepted for any amount

6. Near Money

Highly liquid assets that are not money but can be quickly converted to cash — treasury bills, short-term government securities. Not included in M1 but part of broader measures.

Money Supply: The RBI Framework

The RBI measures money supply through four aggregates:

M0 — Reserve Money (High-Powered Money / Monetary Base)

M0 = Currency in Circulation + Bankers' Deposits with RBI + Other Deposits with RBI

M0 is the "base" money — created only by the RBI. It is called high-powered money because every rupee of M0 can support multiple rupees of broader money supply through the money multiplier process.

M1 — Narrow Money

M1 = Currency with the Public + Demand Deposits with Banks + Other Deposits with RBI

M1 is the most liquid measure — these funds can be immediately used for transactions.

M2

M2 = M1 + Savings Deposits with Post Office Savings Banks

Slightly broader than M1, capturing savings held in postal network.

M3 — Broad Money

M3 = M1 + Time Deposits with Banks

M3 is the most watched monetary aggregate. The RBI historically set M3 growth targets as part of monetary policy. Time deposits include fixed deposits (FDs) — less liquid than demand deposits but still financial assets.

M4

M4 = M3 + All Deposits with Post Office Savings Organisation (excluding NSCs)

The broadest measure; rarely used for policy purposes.

🎯 UPSC Connect: Money Supply and Inflation

The Quantity Theory of Money (MV = PT, or Fisher's equation) links money supply to prices:

• M = Money supply, V = Velocity of circulation, P = Price level, T = Volume of transactions
• If V and T are stable, increasing M raises P (inflation)
• This is why excessive printing of money causes inflation
• RBI controls M through CRR, SLR, OMO, and the repo rate

Credit Creation by Commercial Banks

Commercial banks create credit (money) through the process of accepting deposits and making loans. This is called the money multiplier process.

The Process:

1. A person deposits ₹1,000 in Bank A.
2. Bank A must keep a fraction as reserve (say CRR = 10%). It keeps ₹100 and lends out ₹900.
3. The borrower spends the ₹900, which is deposited in Bank B.
4. Bank B keeps ₹90 (10%) and lends out ₹810.
5. This process continues — each bank lending out a fraction of what it receives.

Money Multiplier = 1 / CRR

If CRR = 10% = 0.10, Money Multiplier = 1/0.10 = 10

So an initial deposit of ₹1,000 can theoretically support ₹10,000 of total deposits in the banking system.

In practice, the multiplier is lower because:

• People hold some currency outside banks
• Banks may hold excess reserves
• Not all loans return as deposits to the banking system

At CRR = 4% (current), the theoretical multiplier = 1/0.04 = 25

This demonstrates why the CRR is a powerful tool — changing it by even 0.25% can significantly alter credit availability in the economy.

📌 Key Fact: CRR and SLR Distinguished

CRR funds are held with the RBI and earn no interest for banks. SLR funds must be maintained in approved securities (government bonds, gold, cash) which do earn returns. This is why banks prefer lower SLR requirements — SLR locks funds into government securities at relatively lower yields compared to commercial lending.

The Reserve Bank of India (RBI)

History

The RBI was established on 1 April 1935 under the Reserve Bank of India Act, 1934, based on the recommendations of the Hilton-Young Commission (1926). It was initially a private shareholders' bank with a paid-up capital of ₹5 crore.

After independence, it was nationalised on 1 January 1949 under the Reserve Bank of India (Transfer to Public Ownership) Act, 1948 — bringing it under full government ownership.

The RBI is headquartered in Mumbai (Central Office shifted from Kolkata in 1937).

Functions of the RBI

1. Issue of Currency

The RBI has the sole right to issue banknotes in India (Section 22 of the RBI Act). The ₹1 note and coins are issued by the Government of India (Ministry of Finance). All currency issued by the RBI forms a liability of the RBI — backed by assets (gold, foreign securities, domestic government securities).

2. Banker to the Government

The RBI acts as banker, fiscal agent, and debt manager for both the Central and State Governments. It:

• Maintains government accounts
• Conducts government bond auctions
• Manages public debt
• Provides Ways and Means Advances (WMA) to governments to bridge temporary cash-flow gaps

3. Banker's Bank and Lender of Last Resort

The RBI holds minimum reserves of all commercial banks (CRR). It provides emergency liquidity to banks facing a crisis — acting as the "lender of last resort." This prevents bank runs from cascading into financial crises.

4. Controller of Credit (Monetary Policy)

This is the RBI's most important macroeconomic function. The RBI uses various instruments to control the money supply and credit, targeting price stability and growth.

5. Custodian of Foreign Exchange Reserves

The RBI manages India's foreign exchange reserves (currently around $625–640 billion as of early 2026, one of the world's largest). It intervenes in the forex market to prevent excessive volatility of the rupee.

6. Regulation and Supervision

The RBI supervises commercial banks, cooperative banks, NBFCs, and payment systems. It prescribes capital adequacy norms, prudential lending limits, and conducts inspections.

7. Development Functions

The RBI promotes financial inclusion, runs priority sector lending norms, and has historically set up development finance institutions (DFIs). It manages the Deposit Insurance and Credit Guarantee Corporation (DICGC), which insures deposits up to ₹5 lakh.

Monetary Policy: Tools and Transmission

The Monetary Policy Committee (MPC) — established in 2016 under the RBI Act — sets the policy repo rate. The MPC has 6 members: the RBI Governor (chairperson), two RBI Deputy Governors, and three external members appointed by the Government.

The inflation target: The Government of India and RBI have a flexible inflation targeting framework. The CPI inflation target is 4% with a tolerance band of ±2% (i.e., 2% to 6%).

Quantitative Tools (General Credit Control):

1. Repo Rate (Repurchase Rate)

The rate at which the RBI lends overnight funds to commercial banks against eligible collateral (government securities). Currently 6.25% (post February 2026 cut). When RBI lowers the repo rate:

• Banks' borrowing costs fall
• Banks can lend at lower rates
• Investment and consumption increase
• GDP growth is stimulated (but may risk inflation)

2. Reverse Repo Rate

The rate at which the RBI borrows from commercial banks overnight. Banks park surplus liquidity with the RBI at this rate. Currently linked to the SDF rate (6.00%). Higher reverse repo absorbs liquidity from the system.

3. Marginal Standing Facility (MSF)

Banks can borrow from the RBI above the repo rate at MSF (currently 6.50%), borrowing up to 1% of their Net Demand and Time Liabilities (NDTL). MSF is an emergency window, forming the upper bound of the interest rate corridor.

4. Cash Reserve Ratio (CRR)

Banks must maintain a fixed percentage of their NDTL as cash with the RBI — currently 4%. CRR funds earn no interest. Raising CRR reduces loanable funds (contractionary); lowering CRR expands credit (expansionary).

5. Statutory Liquidity Ratio (SLR)

Banks must maintain a percentage of NDTL in the form of approved liquid assets — currently 18%. These can be held as gold, government and other approved securities, or cash. Historically SLR was as high as 38.5% in 1990, greatly restricting banks' ability to lend commercially.

6. Open Market Operations (OMO)

The RBI buys or sells government securities in the open market:

• OMO Purchase: RBI buys securities from banks → banks receive cash → liquidity injected → money supply increases
• OMO Sale: RBI sells securities → banks pay cash → liquidity absorbed → money supply decreases

OMOs are used for durable liquidity management rather than short-term adjustments.

7. Liquidity Adjustment Facility (LAF)

The LAF is the operating framework for day-to-day liquidity management. Banks can borrow under the repo window or park surplus under the SDF window. The LAF corridor is bounded by the MSF rate (top) and SDF rate (bottom), with the repo rate as the policy rate in the middle.

8. Market Stabilisation Scheme (MSS)

A special OMO-like instrument introduced in 2004 to sterilise large capital inflows. The government issues T-bills/bonds under MSS (beyond the normal borrowing programme), and the proceeds are held in a separate account with the RBI. This prevents capital inflows from causing excess money supply expansion.

Qualitative Tools (Selective Credit Control):

• Margin requirements: RBI sets minimum margins (percentage of loan value that must be funded by the borrower) for specific sectors (e.g., commodity loans) to restrict speculative credit.
• Moral suasion: RBI persuades banks through meetings, letters, and guidelines to align lending with policy objectives.
• Credit rationing: RBI can cap the total credit available to certain sectors.
• Direct action: RBI can penalise or restrict non-compliant banks.

💡 Explainer: How a Repo Rate Cut Reaches You

The transmission chain: RBI cuts repo rate → bank borrowing costs fall → banks cut MCLR (Marginal Cost of Funds Based Lending Rate) → new loans get cheaper → businesses invest more → workers earn more → spending rises → GDP grows.

However, transmission is not immediate or uniform. In India, transmission lags are typically 6–18 months. Legacy fixed-rate loans don't adjust. Banks may not pass the full cut if they face NPAs or weak deposit growth.

🎯 UPSC Connect: MCLR System

The Marginal Cost of Funds Based Lending Rate (MCLR) system, introduced in April 2016, replaced the Base Rate system. MCLR is calculated based on marginal cost of deposits, CRR cost, operating expenses, and profit margin. Home loans, auto loans, and corporate loans are typically linked to MCLR or an external benchmark (like repo rate + spread, as mandated by RBI for floating rate retail loans from October 2019).

Non-Banking Financial Companies (NBFCs)

NBFCs are financial intermediaries registered under the Companies Act — they perform many banking functions but are not banks. They cannot accept demand deposits (savings/current accounts) and are not part of the payment and settlement system.

Categories of NBFCs:

• NBFCs-D (Deposit-accepting): Can accept public deposits but only time deposits, not demand deposits. Subject to stricter RBI regulation.
• NBFCs-ND (Non-deposit accepting): Do not accept public deposits; rely on market borrowings.
• Systemically Important NBFCs (NBFC-SI): Asset size ≥ ₹500 crore; subject to bank-like prudential norms.

Important NBFC categories:

• Infrastructure Finance Company (IFC): Funds long-term infrastructure
• Microfinance Institution (MFI): Small loans to low-income borrowers
• Housing Finance Company (HFC): Home loans (now also regulated by RBI after 2019)
• Core Investment Company (CIC): Holds stakes in group companies

Why NBFCs Matter: They serve segments that banks don't adequately cover — rural borrowers, micro-enterprises, used vehicle finance. After the IL&FS crisis (2018) and DHFL collapse (2019), NBFC regulation was tightened significantly.

📌 Key Fact: Shadow Banking

NBFCs that borrow short-term and lend long-term (maturity mismatch) — similar to banks but without the safety net — are called shadow banks. IL&FS, a large infrastructure NBFC, defaulted in 2018 causing a liquidity crisis across NBFCs and mutual funds, demonstrating the systemic risks of shadow banking.

Digital Money and Payments: UPI

Unified Payments Interface (UPI) was launched by the National Payments Corporation of India (NPCI) in April 2016. It is a real-time payment system that enables instant money transfers between bank accounts using a smartphone.

Key features:

• 24×7 availability, including weekends and holidays
• Uses Virtual Payment Address (VPA) — no need to share bank account details
• Interoperable across all participating banks
• Can initiate both push (send) and pull (collect) transactions

UPI Performance (as of early 2026):

• Monthly transaction volume: Over 16 billion transactions per month
• Monthly transaction value: Over ₹23 lakh crore per month
• UPI accounts for over 80% of retail digital payment volumes in India
• Available in multiple countries (Singapore, UAE, France, UK, Nepal, Sri Lanka, Bhutan, Mauritius, Malaysia)

Impact on Money Supply: UPI does not directly change M1 or M3 — it merely facilitates faster movement of existing bank money. However, it has increased the velocity of money (M×V = P×T) and has drawn more transactions into the formal banking system, widening the tax base and reducing black money.

Other Digital Payment Systems:

• IMPS (Immediate Payment Service): 24×7 real-time bank transfers (pre-UPI, 2010)
• NEFT (National Electronic Funds Transfer): Half-hourly batches (now 24×7)
• RTGS (Real Time Gross Settlement): Large value (above ₹2 lakh) real-time transfers
• NACH (National Automated Clearing House): Bulk recurring payments (salaries, EMIs)

🔗 Beyond the Book: CBDCs — The Next Frontier

The RBI launched the Central Bank Digital Currency (CBDC) — the Digital Rupee (e₹) — in pilot form:

• Wholesale CBDC (e₹-W): Launched November 2022 for settlement of secondary market transactions in government securities
• Retail CBDC (e₹-R): Launched December 2022 in pilot cities

Unlike UPI (which uses existing bank deposits), CBDC is issued directly by the RBI — it is a direct liability of the RBI, similar to physical currency. It operates on distributed ledger technology (DLT). The goal is to reduce costs of physical currency management while maintaining state control over money.

PART 3 — Frameworks and Mnemonics

Framework 1: The Money Supply Pyramid

    M4 (Broadest — includes post office deposits)
   ────────────────────────────────────────────
   M3 = M1 + Time Deposits (Broad Money — KEY MEASURE)
  ──────────────────────────────────────────────────
  M2 = M1 + Post Office Savings Deposits
 ────────────────────────────────────────────────────
 M1 = Currency with Public + Demand Deposits (Narrow Money)
────────────────────────────────────────────────────────────
M0 = Reserve Money = High-Powered Money (RBI-created base)

Liquidity decreases going up the pyramid. Policy focus is M3.

Framework 2: The LAF Corridor

MSF Rate: 6.50%  ← Emergency ceiling (banks borrow here when desperate)
              |
Repo Rate: 6.25%  ← Policy rate (target for overnight money market rates)
              |
SDF Rate: 6.00%  ← Floor (banks park excess funds here; no collateral needed)

The width of the corridor (MSF − SDF = 50 bps) has been maintained constant while the entire corridor shifted down by 25 bps in February 2026.

Framework 3: Credit Creation — Step by Step

Total Deposits = Initial Deposit × Money Multiplier = ₹10,000 × 25 = ₹2,50,000

Mnemonic: RBI Functions — "MILD DRESS"

M — Monetary policy (MPC, repo rate) I — Issue of currency L — Lender of last resort D — Debt management (government borrowings) D — Development functions (financial inclusion) R — Regulation and supervision of banks/NBFCs E — Exchange rate management (forex reserves) S — Settlement systems (payment and clearing systems) S — Statistical data collection and publication

Mnemonic: Money Functions — "MUSS"

M — Medium of exchange U — Unit of account S — Store of value S — Standard of deferred payment

Exam Strategy

For UPSC Prelims:

Focus on exact values of monetary policy rates (repo 6.25%, CRR 4%, SLR 18% as of February 2026). These change and are favourite Prelims questions. Always check RBI's latest Monetary Policy Statement.

Know the composition of each money supply measure (M0 through M4). Questions often ask which component is included in M1 but not M0, or what distinguishes M3 from M1.

Distinguish RBI from commercial banks clearly — RBI does not deal with the public directly; it deals with banks and the government.

Know that the ₹1 note is issued by the Ministry of Finance, not RBI — a common Prelims trap.

For UPSC Mains (GS3):

Monetary policy answers should demonstrate understanding of the transmission mechanism — not just what tools exist but how they affect the real economy. Use the LAF corridor framework.

When discussing credit creation, use the money multiplier formula and give numerical examples.

NBFCs and shadow banking questions should connect to the IL&FS crisis and RBI's regulatory reforms post-2018.

UPI questions should include current data and India's global fintech leadership.

High-Value UPSC Angles:

• RBI independence vs government control (inflation targeting framework, MPC composition)
• Monetary transmission lags and effectiveness
• Digital currency (CBDC) and its implications
• Financial inclusion through digital payments
• NBFC regulation and systemic risk

Previous Year Questions (PYQs)

Prelims

Q1. With reference to the Indian economy, consider the following statements:

1. Reserve Money (M0) includes bankers' deposits with the RBI.
2. M3 is referred to as 'Broad Money.'
3. The Statutory Liquidity Ratio is currently higher than the Cash Reserve Ratio.

Which of the above statements are correct? (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3 Answer: (d) — all three are correct.

Q2. The 'Marginal Standing Facility Rate' and the 'Net Demand and Time Liabilities' are terms most specifically related to: (a) Capital markets (b) Banking operations (c) Public finance (d) Foreign exchange management Answer: (b)

Q3. In the context of India's monetary policy, which of the following correctly describes the 'Liquidity Adjustment Facility' (LAF)? (a) It allows the government to borrow short-term funds directly from RBI. (b) It is the mechanism through which RBI conducts day-to-day liquidity management through repo and reverse repo/SDF operations. (c) It is a facility for commercial banks to accept deposits from the public at market rates. (d) It is used exclusively for managing India's foreign exchange reserves. Answer: (b)

Mains

Q1. "The Reserve Bank of India's role as a monetary authority goes far beyond simply controlling interest rates." Elaborate on the multifaceted functions of the RBI and discuss how monetary policy transmission works in the Indian context, including its limitations. (GS3, 250 words)

Key points to cover: Issue of currency, banker's bank, lender of last resort, forex management, regulation; transmission chain (repo → MCLR → lending rates → investment → GDP); lags, NPAs reducing transmission, fixed-rate legacy loans, liquidity preference.

Q2. Discuss the role of Non-Banking Financial Companies (NBFCs) in India's financial system. How did the IL&FS crisis of 2018 expose the vulnerabilities of shadow banking, and what regulatory reforms has the RBI undertaken since? (GS3, 150 words)

Key points to cover: NBFCs filling credit gap in rural/MSME/vehicle finance; shadow banking risks (maturity mismatch, liquidity risk); IL&FS default cascade; RBI's response — scale-based regulation, tighter liquidity norms, mandatory credit ratings, harmonisation of NBFC categories.