Money & Money Supply
Money & Money Supply
Comprehensive study of money — its evolution, functions, money supply aggregates (M0-M4), money multiplier, credit creation, currency issuance, CBDC, demonetisation, velocity of circulation, and RBI's role in controlling money supply for government exam preparation.
Key Dates
Reserve Bank of India established — sole authority to issue currency notes in India
India adopted decimal coinage system (100 paise = 1 rupee) and RBI shifted to Minimum Reserve System for note issuance
RBI introduced the new money supply measures (M1, M2, M3, M4) based on Second Working Group on Money Supply recommendations
Demonetisation of Rs 500 and Rs 1000 notes (November 8) — sharp contraction in currency in circulation; 86% of currency by value withdrawn
Rs 2000 notes withdrawn from circulation (May 19) — exchanged/deposited by September 30, 2023; 97.76% returned
One-rupee note is issued by Government of India (Ministry of Finance), not RBI — continues to this day
Ad hoc Treasury Bills abolished — replaced by Ways and Means Advances, ending automatic monetisation of fiscal deficit
RBI launched e-Rupee (CBDC) pilot — wholesale segment (November 1) for G-Sec settlement and retail segment (December 1) through banks
RBI nationalised on January 1, 1949 — Government of India acquired entire share capital; RBI became fully state-owned
FRBM Act implementation began — prohibited RBI from subscribing to primary issues of government securities (ended monetisation)
Paper Currency Act — Government of India started issuing paper currency in India for the first time
RBI introduced new symbol for Indian Rupee (Rs to the current symbol) designed by D. Udaya Kumar
RBI withdrew Rs 500 and Rs 1000 notes — India's first demonetisation exercise; second in 1978 (Rs 1000, 5000, 10000 notes)
Functions of Money
Money serves four primary functions: (1) Medium of Exchange — eliminates the need for double coincidence of wants required in barter. Any commodity that is widely accepted as a medium of exchange is money (this is the most essential function). (2) Measure of Value (Unit of Account) — provides a common denominator to express prices of all goods and services. Without a unit of account, every good would need to be priced in terms of every other good (in a barter economy with n goods, there are n(n-1)/2 exchange ratios). (3) Store of Value — allows purchasing power to be saved for future use. Money is the most liquid store of value but is limited by inflation — if prices rise, money loses purchasing power. Real assets (land, gold) are better stores of value during high inflation. (4) Standard of Deferred Payments — facilitates credit transactions and future obligations (loans, contracts, wages). This function is possible only when money maintains stable value. Some economists add a fifth function: Transfer of Value — money enables transfer of purchasing power from one person to another or one place to another. Money has evolved through stages: Commodity money (cattle, salt, shells, gold, silver) → Metallic coins (standardised weight and purity) → Paper currency (representative money backed by gold, then fiat money) → Bank money (cheques, demand drafts, demand deposits) → Plastic money (credit/debit cards) → Digital money (UPI, mobile wallets, CBDC). India launched the e-Rupee (CBDC) pilot in 2022. Gresham's Law: "Bad money drives out good money" — when two forms of money circulate, people hoard the more valuable form and spend the less valuable. This explains why gold coins disappeared from circulation when paper currency was introduced.
Money Supply Aggregates in India
RBI defines money supply in four measures of increasing breadth: M1 (Narrow Money) = Currency with public + Demand deposits with commercial banks + Other deposits with RBI. M1 is the most liquid measure. Currency with public = Currency in circulation minus Cash held by commercial banks. Demand deposits are current account and savings account deposits that can be withdrawn on demand without notice. Other deposits with RBI include deposits of foreign central banks, international financial institutions (IMF, World Bank), and other institutions. M2 = M1 + Post Office savings bank deposits. Post office savings are included because they are a close substitute for bank savings deposits, though slightly less liquid. M3 (Broad Money) = M1 + Time deposits (Fixed Deposits) with commercial banks. M3 is the most commonly used measure and is often called "aggregate monetary resources." Time deposits are less liquid because they have a lock-in period (premature withdrawal attracts penalty). M4 = M3 + Total Post Office deposits (excluding National Savings Certificates). NSC is excluded because it is a government borrowing instrument, not a deposit. Key relationships: M1 is the most liquid; M4 is the least liquid. M3 is the most tracked and reported measure — RBI publishes M3 data fortnightly. As of March 2024, M3 (broad money) was approximately Rs 228 lakh crore. The ratio of currency to deposits has been declining over decades as digital payments and bank deposits grow — from about 25% in the 1990s to about 15% in 2024. This trend accelerated after demonetisation (2016) and UPI adoption. Important: Demand deposits DO NOT include inter-bank deposits (deposits that banks keep with each other). Only deposits of the public are counted in money supply.
Reserve Money (M0 / High-Powered Money)
Reserve Money (M0) = Currency in Circulation + Bankers' Deposits with RBI + Other Deposits with RBI. It is also called High-Powered Money (H) or Monetary Base because it forms the base for money creation through the banking system. Every rupee of reserve money can support multiple rupees of broad money supply (M3) through the credit creation process. Currency in Circulation = Notes in circulation + Rupee coins + Small coins. This includes currency held by the public AND cash held by commercial banks in their vaults. Bankers' deposits with RBI = CRR (Cash Reserve Ratio) deposits that banks must maintain + excess reserves that banks voluntarily keep. RBI controls M0 directly through several instruments: (1) Open Market Operations (OMOs): RBI buys government securities → injects reserve money → M0 increases. RBI sells securities → absorbs reserve money → M0 decreases. (2) CRR changes: Increase in CRR → banks deposit more with RBI → less money available for lending → M0 composition changes but credit creation slows. (3) Repo/reverse repo operations under LAF: Short-term liquidity management. Repo (RBI lends) → injects liquidity. Reverse repo (RBI absorbs) → reduces liquidity. (4) Foreign exchange operations: RBI buys dollars → pays in rupees → M0 increases. RBI sells dollars → absorbs rupees → M0 decreases. Sources of Reserve Money (RBI's balance sheet assets): Net RBI credit to government (holdings of G-Secs) + RBI credit to banks (repo lending) + Net foreign exchange assets of RBI + Government's currency liabilities to the public (rupee coins). As of March 2024, Reserve Money was approximately Rs 46 lakh crore. The Money Multiplier (m) = M3 / M0. If reserve ratio is r and currency-deposit ratio is c, then m = (1+c)/(c+r). In India, the money multiplier is approximately 5 — meaning every Rs 1 of reserve money supports approximately Rs 5 of broad money. A higher CRR reduces the money multiplier. A higher currency-deposit ratio (people holding more cash relative to bank deposits) also reduces the multiplier.
Credit Creation by Commercial Banks
Commercial banks create money through the process of credit creation (also called deposit multiplication). When a bank receives a deposit, it keeps a fraction as reserves (CRR + voluntary excess reserves) and lends out the rest. The loan amount gets deposited in another bank, which again keeps reserves and lends — this process continues, multiplying the original deposit into a much larger amount of money. Example: Initial deposit Rs 10,000. CRR 4%. Bank A keeps Rs 400 as reserves, lends Rs 9,600. This Rs 9,600 becomes a deposit in Bank B. Bank B keeps Rs 384, lends Rs 9,216. This continues geometrically. Total deposits created = Initial Deposit / Reserve Ratio = 10,000 / 0.04 = Rs 2,50,000. This is the Deposit Multiplier = 1/r where r = reserve ratio. Limitations of credit creation in practice: (1) All loans may not return as deposits to the banking system — some may be held as cash (leakage). (2) Banks may keep excess reserves beyond CRR (especially in times of uncertainty). (3) Demand for loans may be insufficient — banks cannot force lending. (4) RBI's SLR (Statutory Liquidity Ratio) requires banks to hold a portion of deposits in government securities, reducing loanable funds. Current SLR is 18% — banks must hold 18% of NDTL (Net Demand and Time Liabilities) in G-Secs, gold, or approved securities. (5) Capital adequacy requirements (Basel III norms require CRAR of 9% in India, vs 8% globally) limit how much banks can lend relative to their capital. The implications for monetary policy are significant: RBI does not directly control the total money supply (M3). It controls reserve money (M0) and influences the money multiplier through CRR, SLR, and interest rate policy. If banks are reluctant to lend (risk aversion), even large injections of reserve money may not increase M3 proportionally — this is the "pushing on a string" problem seen during economic slowdowns.
Currency Issuance in India
RBI issues all currency notes except the one-rupee note (issued by the Ministry of Finance, signed by the Finance Secretary). All other notes bear the signature of the RBI Governor and carry the promise "I promise to pay the bearer the sum of...". This promise is a legacy of the gold standard when notes could be exchanged for gold; today, notes are fiat money backed by government guarantee, not gold. Section 22 of the RBI Act 1934 gives RBI the sole right to issue bank notes in India. Notes are printed at four printing presses: Dewas (Madhya Pradesh), Nasik (Maharashtra) — both owned by Security Printing and Minting Corporation of India Limited (SPMCIL, a GoI enterprise), and Mysuru (Karnataka) and Salboni (West Bengal) — owned by Bharatiya Reserve Bank Note Mudran Private Limited (BRBNMPL, a wholly-owned subsidiary of RBI). All coins are minted by the Government of India at four mints: Mumbai, Kolkata, Hyderabad, and Noida. Coins are issued by GoI under the Coinage Act 2011. RBI acts as agent for coin distribution. RBI follows the Minimum Reserve System (MRS) since 1957 — it must maintain minimum reserves of Rs 200 crore (Rs 115 crore in gold + Rs 85 crore in foreign securities). Before 1957, RBI followed the Proportional Reserve System (required 40% gold and forex backing for notes). The shift to MRS gave RBI flexibility to issue notes as needed. Legal Tender: Notes issued by RBI are legal tender for unlimited amounts — they must be accepted for any transaction. Coins: Re 1 coins are legal tender for any amount. Coins of higher denomination (Rs 2, 5, 10, 20) are legal tender up to Rs 1,000. Bank notes can be refused if they are torn, defaced, or damaged beyond recognition — RBI has a Note Refund Policy for exchange of mutilated notes. Denomination: RBI can issue notes in denominations of Rs 2, 5, 10, 20, 50, 100, 200, 500, and 2000 (Section 24 of RBI Act). The Rs 2000 note was introduced in November 2016 post-demonetisation and withdrawn in May 2023. Currently, the highest denomination in circulation is Rs 500.
Demonetisation — 2016 and Historical Context
India has had three demonetisation episodes: (1) 1946: British India government withdrew Rs 500 and Rs 1000 notes to curb black money generated during World War II. Limited impact as these denominations were not widely held. (2) 1978: Janata government under PM Morarji Desai demonetised Rs 1000, Rs 5000, and Rs 10000 notes under the High Denomination Bank Notes (Demonetisation) Act 1978. Again limited impact — only Rs 1.46 crore in these notes was in circulation. (3) 2016: PM Modi announced demonetisation of Rs 500 and Rs 1000 notes on November 8, 2016 (effective midnight). This was unprecedented in scale — Rs 15.44 lakh crore (86.4% of currency in circulation by value) was demonetised. New Rs 500 and Rs 2000 notes were introduced. Stated objectives: (a) Curb black money and counterfeit currency. (b) Push digital payments. (c) Attack terror financing. (d) Formalise the economy. Impact: Currency in circulation fell from Rs 17.97 lakh crore (November 4, 2016) to Rs 7.8 lakh crore (January 6, 2017) — a contraction of 57%. GDP growth in Q3 FY17 slowed to 6.1% from 7.3% in Q2. Informal sector (which is largely cash-dependent) was severely hit. Employment in informal sector declined by an estimated 1.5 million jobs (CMIE data). 99.3% of demonetised currency was returned to banks (Rs 15.31 lakh crore out of Rs 15.44 lakh crore) — this undermined the objective of extinguishing black money held as cash. However, the government received information about 1.8 crore suspect depositors for tax scrutiny. Digital payments surged: UPI transactions grew from 0.3 crore/month (November 2016) to 9.3 crore/month (March 2017) and to 1,342 crore/month (March 2024). BHIM app was launched in December 2016. Formal banking expanded — current and savings account deposits surged as people deposited cash. PMJDY accounts saw deposits rise significantly. RBI's 2018 Annual Report noted that the cost of printing new notes was Rs 7,965 crore. Rs 2000 note withdrawal (May 2023): RBI withdrew Rs 2000 notes from circulation on May 19, 2023, using powers under Section 24(2) of the RBI Act. Unlike 2016, the notes remained legal tender and could be exchanged/deposited at banks by September 30, 2023. Rs 3.56 lakh crore of Rs 2000 notes were in circulation; 97.76% (Rs 3.48 lakh crore) was returned.
Velocity of Circulation & Quantity Theory
Velocity of Circulation (V) = Number of times a unit of money changes hands in a given period = Total value of transactions / Money supply. A higher velocity means money circulates faster — each unit of money finances more transactions. Fisher's Equation of Exchange: MV = PT, where M = money supply, V = velocity of circulation, P = general price level, T = volume of transactions. This is an identity (always true by definition). The Quantity Theory of Money (Classical view): Assumes V and T are constant in the short run (V determined by institutional factors like payment frequency, banking habits; T determined by real output at full employment). If V and T are constant, an increase in M leads to a proportional increase in P (inflation). This implies money is "neutral" — it only affects prices, not real output. Cambridge Cash Balance Approach: Md = kPY, where k = fraction of nominal income people wish to hold as money (cash balance), Y = real income. This approach emphasises the demand for money (why people hold money) rather than supply and velocity. k = 1/V, so the two approaches are mathematically equivalent but conceptually different. Cambridge approach introduces the idea that people hold money for convenience (transactions motive, precautionary motive) — foreshadowing Keynes. Keynes's Liquidity Preference Theory: People demand money for three motives — (1) Transactions motive (day-to-day purchases), (2) Precautionary motive (emergency needs), (3) Speculative motive (to take advantage of expected changes in interest rates/bond prices). Interest rate is the "price" of holding money rather than interest-bearing bonds. In a liquidity trap, interest rates are so low that everyone prefers to hold cash rather than bonds — monetary policy becomes ineffective (V falls as fast as M rises). Monetarism (Milton Friedman): "Inflation is always and everywhere a monetary phenomenon." Friedman argued V is stable (not constant) and predictable. Central banks should follow a fixed monetary growth rule (k-percent rule) rather than discretionary policy. India's experience: Post-demonetisation, velocity fell sharply (more money was held in banks rather than circulating). During COVID-19, velocity again fell as spending collapsed. As the economy recovered and digital payments accelerated, velocity patterns changed. The rise of UPI effectively increases V — the same money facilitates more transactions as transfer speed increases from days (cheques) to seconds (UPI).
Central Bank Digital Currency (CBDC) — e-Rupee
A Central Bank Digital Currency (CBDC) is a digital form of fiat currency issued by the central bank. Unlike cryptocurrencies (Bitcoin, Ethereum), CBDC is centralised, regulated, and backed by the sovereign. RBI announced its CBDC framework in the "Concept Note on CBDC" (October 2022). Two forms: (1) Wholesale CBDC (e-Rupee-W): For financial institutions. Pilot launched November 1, 2022 for settlement of government securities. Participants: 9 banks (SBI, Bank of Baroda, Union Bank, HDFC Bank, ICICI Bank, Kotak Mahindra Bank, Yes Bank, IDFC First Bank, HSBC). Reduces settlement risk and improves efficiency of inter-bank transactions. (2) Retail CBDC (e-Rupee-R): For general public. Pilot launched December 1, 2022 in select cities (Mumbai, New Delhi, Bengaluru, Bhubaneswar, initially; expanded to 13 cities). Users can hold e-Rupee in digital wallets provided by banks. Transaction types: person-to-person (P2P) and person-to-merchant (P2M). Works both online and offline (for small value transactions without internet). Key features of e-Rupee: (a) Legal tender — same as physical currency. (b) No interest — unlike bank deposits. (c) Central bank liability — RBI is directly liable, unlike UPI/NEFT which involve bank intermediation. (d) Programmability — potential for targeted subsidies (e.g., fertiliser subsidy that can only be spent on fertiliser), expiring money (stimulus that must be spent by a date). (e) Privacy — RBI aims for "managed anonymity" — small transactions anonymous (like cash), large transactions tracked (KYC). How CBDC differs from UPI: UPI is a payment system that transfers bank deposits. CBDC is actual digital cash — a direct claim on RBI. When you pay via UPI, bank deposits move from one account to another. When you pay via CBDC, digital currency moves like physical cash. Implications for banking: If people shift deposits to CBDC (which is risk-free, being a central bank liability), banks may face deposit disintermediation — reducing their ability to create credit. RBI will manage this through design choices (no interest on CBDC, transaction limits). Global context: China's Digital Yuan (e-CNY) is the most advanced major CBDC with 260+ million wallets. Bahamas launched the Sand Dollar (2020) — world's first nationwide CBDC. EU is working on the Digital Euro. US has been studying but not launched a digital dollar. India's e-Rupee is among the earliest CBDC pilots by a major economy.
Black Money, Hawala & Informal Economy
Black money refers to income or wealth on which taxes have not been paid. It exists in two forms: (1) Cash — physical currency held outside the banking system. (2) Assets — real estate, gold, foreign accounts, shell companies. India's informal/parallel economy is estimated at 20-30% of GDP (though estimates vary widely due to the hidden nature of the phenomenon). The 2016 demonetisation targeted cash-based black money but did not address asset-based black money. Hawala: An informal value transfer system operating outside conventional banking. A person gives money to a hawala dealer (hawaridar) in one country, and the recipient collects equivalent money from a dealer in another country. No physical movement of money — settlement happens through trade, goods, or periodic netting between dealers. Hawala is used for: (a) Legitimate remittances by migrants (cheaper and faster than banks). (b) Tax evasion — moving undeclared income abroad. (c) Terror financing — FATF (Financial Action Task Force) identifies hawala as a key ML/TF risk. Hawala is illegal in India under FEMA (Foreign Exchange Management Act 1999). The Enforcement Directorate (ED) investigates hawala violations. Measures against black money: (1) Benami Transactions (Prohibition) Amendment Act 2016 — transactions in someone else's name to hide true ownership are punishable. Properties can be confiscated. (2) Black Money (Undisclosed Foreign Income and Assets) Act 2015 — tax evasion on foreign income/assets punishable with 10 years' imprisonment + 120% penalty. (3) Income Declaration Scheme 2016 — voluntary disclosure with 45% tax+penalty. (4) Operation Clean Money — data analytics to identify tax evaders from demonetisation deposits. (5) Automatic Exchange of Financial Account Information — India joined OECD's Common Reporting Standard (CRS) — signatory countries share financial data to detect offshore tax evasion. India receives information from 107 countries including Switzerland. (6) Cash transaction restrictions: PAN mandatory for transactions above Rs 2 lakh. No cash payment above Rs 2 lakh in a single transaction (Section 269ST of Income Tax Act). Cash donations to political parties limited to Rs 2,000.
Digital Payments & UPI Revolution
India has experienced a digital payments revolution, fundamentally altering the velocity and usage pattern of money. UPI (Unified Payments Interface): Launched August 2016 by NPCI (National Payments Corporation of India). Real-time, 24x7 interbank transfer system using mobile phones. UPI transactions (March 2024): 1,342 crore transactions worth Rs 19.78 lakh crore in a single month. Total UPI transactions FY24: 13,116 crore worth Rs 199.9 lakh crore — larger than India's GDP at current prices. Key UPI features: Interoperable across banks and apps (PhonePe, Google Pay, Paytm, BHIM). UPI-linked to bank accounts (not wallets). Zero cost for person-to-person transfers. QR code-based merchant payments. UPI Lite (offline small-value transactions, up to Rs 500). UPI 123PAY (feature phone payments via IVR). UPI for NRIs (linking NRE/NRO accounts). Cross-border: UPI linked to Singapore's PayNow (September 2023), Sri Lanka, UAE, France — expanding international acceptance. Other digital payment systems: NEFT (National Electronic Funds Transfer — batch processing, hourly settlements, available 24x7 since December 2019). RTGS (Real Time Gross Settlement — for large-value transfers above Rs 2 lakh, real-time, 24x7 since December 2020). IMPS (Immediate Payment Service — real-time, pre-cursor to UPI). NACH (National Automated Clearing House — for recurring payments like EMIs, subscriptions). BBPS (Bharat Bill Payment System — centralised bill payment). AePS (Aadhaar-enabled Payment System — biometric authentication for basic banking at micro-ATMs). Digital payments impact on money supply: (1) Reduces demand for physical currency — Currency-to-GDP ratio declined from 12% (2016) to about 11.5% (2024). (2) Increases velocity — same money circulates faster digitally. (3) Enhances financial inclusion — even illiterate users can transact via AePS. (4) Improves tax compliance — digital trail makes tax evasion harder. (5) Reduces cost of cash management — RBI spends Rs 4,000-5,000 crore annually on printing, distributing, and managing physical currency.
Money Supply & Inflation Linkage
The relationship between money supply and inflation is one of the most important macroeconomic linkages. Classical/Monetarist view: MV = PY (modified Fisher equation where T is replaced by Y = real output). If V is stable and Y grows at a fixed rate, then excess money supply growth (M growing faster than Y) directly causes inflation. Friedman: "Inflation is always and everywhere a monetary phenomenon." This view suggests central banks should control money supply to control inflation. Keynesian view: Inflation can also be caused by demand-pull factors (excess aggregate demand), cost-push factors (supply shocks like oil price increases, wage hikes), and structural factors (supply bottlenecks). Money supply growth is a necessary but not sufficient condition for sustained inflation. In the short run, money supply increase may increase output (not just prices) if there is spare capacity. India's experience: (1) 1970s-80s: High fiscal deficits monetised by RBI (printing money to fund government spending via ad hoc Treasury Bills). M3 growth averaged 17-18% per year. Inflation averaged 8-10%. Strong positive correlation between M3 growth and inflation. (2) 1991 reforms: FRBM Act (2003) and prohibition on RBI subscribing to primary G-Sec issues ended monetisation. M3 growth moderated. (3) 2008-2013: Large fiscal deficits post-global financial crisis and expansionary monetary policy led to high inflation (CPI above 10%). RBI tightened monetary policy aggressively. (4) 2016-2020: Demonetisation caused temporary M3 contraction. Digital payments partly offset the impact. CPI inflation moderated to 4-5%. (5) COVID-2020: RBI expanded M0 significantly (cut CRR from 4% to 3%, expanded repo lending, Government Securities Acquisition Programme — GSAP). M3 growth surged to 12%+. But inflation initially stayed low because velocity collapsed (lockdown). As economy reopened (2021-22), supply chain disruptions + excess liquidity caused CPI inflation to breach 6% upper tolerance band. RBI responded by raising repo rate from 4% to 6.5% and absorbing excess liquidity. RBI's current framework: Flexible Inflation Targeting (since 2016). Target: CPI inflation at 4% (with +/-2% band). RBI uses repo rate as the primary instrument. Money supply growth is monitored but not targeted directly. The transmission mechanism runs through: Repo rate → bank lending/deposit rates → credit growth → aggregate demand → inflation.
Near Money & Liquidity Spectrum
Not all assets are equally liquid. The liquidity spectrum ranges from the most liquid (cash) to the least liquid (real estate). Near Money refers to assets that are highly liquid and can be quickly converted to cash but are not money themselves. Examples: Treasury Bills (91/182/364 day maturity, traded in secondary market). Fixed Deposits (can be broken with penalty). Post Office Savings and Time Deposits. Government Securities (traded on NDS-OM). Mutual Fund units (especially liquid funds — same-day redemption). Commercial Paper and Certificates of Deposit. The distinction between money and near money matters because: (1) If near money substitutes are abundant, people need less actual money for transactions — velocity effectively increases. (2) Changes in interest rates affect the relative attractiveness of money (zero/low interest) vs near money (higher interest) — influencing demand for money. (3) Financial innovation creates new near-money instruments — M3 may not fully capture the effective money supply. Liquid Funds in India: Assets under management of liquid mutual funds exceed Rs 5 lakh crore. These funds invest in instruments with maturity up to 91 days. They offer T+1 redemption (same business day for requests before cut-off time). For corporate treasurers, liquid funds are effectively money — they park surplus cash in liquid funds and redeem as needed. This blurs the line between M3 money supply and the effective purchasing power in the economy. Money Market Instruments in India: Call Money/Notice Money (overnight/short-term inter-bank lending), Repo (RBI's LAF), Treasury Bills, Commercial Paper (CP), Certificates of Deposit (CD), Collateralised Borrowing and Lending Obligation (CBLO — now replaced by TREP, Triparty Repo). These instruments are close substitutes for money and their yields are key indicators of liquidity conditions in the economy.
Monetary Base Approach vs Credit Approach
Two approaches to understanding money supply determination: (1) Monetary Base (Money Multiplier) Approach: M3 = m x M0, where m is the money multiplier. Central bank controls M0, and m is determined by CRR, currency-deposit ratio, and excess reserve ratio. Changes in M0 cause proportional changes in M3 (scaled by multiplier). This is the traditional textbook approach. Limitation: The multiplier is not stable in practice — it changes with bank behaviour, public preferences, and market conditions. During crises, banks hoard excess reserves and the multiplier collapses. (2) Credit/Endogenous Money Approach (Post-Keynesian): Banks create money by extending credit — they do not need prior deposits or reserves to lend. When a bank grants a loan, it simultaneously creates a deposit (money). The sequence is: Loans → Deposits → Reserves (banks borrow reserves from RBI/interbank market after lending). Money supply is demand-determined — it grows when creditworthy borrowers demand loans. Central bank can influence the price of credit (interest rate) but not directly control the quantity of money. This approach better explains why M3 sometimes grows faster or slower than M0 would predict. Practical implication for India: RBI uses a combination approach. It sets the policy interest rate (repo rate) to influence credit demand (price-based approach) and also manages liquidity through OMOs, CRR, and LAF (quantity-based approach). The shift from a quantity-targeting to an interest rate-targeting framework happened in the late 1990s. The adoption of Flexible Inflation Targeting (2016) formalised the interest rate approach. RBI publishes: (a) M3 growth data (fortnightly). (b) Sectoral credit deployment data (monthly). (c) Reserve money data (weekly). (d) Liquidity conditions via LAF data (daily). These data points help analysts assess whether money supply growth is consistent with the inflation target and economic growth.
Historical Evolution of India's Monetary System
India's monetary history spans millennia: Ancient Period: Punch-marked coins (6th century BCE — Mahajanapada era) — the earliest Indian coins were silver/copper with punch marks. Mauryan empire standardised coinage. Kautilya's Arthashastra mentions a superintendent of mint (Lakshanadhyaksha). Gold coins: Kushana period (Kanishka) and Gupta period (Samudragupta) produced gold coins — Gupta gold coins are among the finest in ancient world. Medieval Period: Delhi Sultanate introduced the Tanka (silver) and Jital (copper). Muhammad bin Tughlaq's experiment with token currency (brass/copper coins at face value of silver Tanka) failed catastrophically — people counterfeited brass coins, causing economic chaos. Sher Shah Suri introduced the Rupiya (silver coin of 178 grains) in 1540-45 — the direct ancestor of the modern Rupee. Mughal period: Standardised silver rupee, gold mohur, copper dam. British Period: (1) East India Company issued its own coins from Bombay, Madras, and Calcutta mints. (2) Coinage Act 1835 established uniform coinage across British India — silver rupee as standard. (3) Paper Currency Act 1861 — government started issuing paper currency. (4) Hilton-Young Commission (1926) recommended creation of a central bank — led to establishment of RBI (1935). (5) RBI established on April 1, 1935 under the RBI Act 1934. Initially privately owned (shareholders), nationalised on January 1, 1949. (6) Under the gold exchange standard, the rupee was pegged to the British pound (and through it to gold). After WWII and Indian independence, the rupee was pegged to the pound at Rs 1 = 1s 6d. (7) Devaluation: 1949 (Rs 4.76/$ to Rs 3.31/$, forced by pound devaluation), 1966 (Rs 4.76/$ to Rs 7.50/$ — 36.5% devaluation, economic crisis), 1991 (two-step devaluation as part of LPG reforms). Post-Independence Monetary Evolution: Gold standard abandoned. Managed float exchange rate since 1993. RBI shifted from direct instruments (CRR/SLR changes) to indirect instruments (LAF, OMOs, MSF). Inflation targeting adopted in 2016.
Currency in Circulation — Trends & Analysis
Currency in Circulation (CIC) is a key monetary indicator. CIC (March 2024): approximately Rs 35.15 lakh crore. CIC as percentage of GDP: approximately 11.5% — this ratio, called the Currency-to-GDP ratio, indicates the economy's dependence on physical cash. Trends: Pre-demonetisation: CIC was Rs 17.97 lakh crore (November 4, 2016). CIC-to-GDP ratio: about 12%. Post-demonetisation low: Rs 7.8 lakh crore (January 6, 2017). Recovery: CIC crossed the pre-demonetisation level by March 2018 and has been growing steadily since. COVID-19 impact: CIC surged to Rs 28.3 lakh crore by March 2021 — people hoarded cash due to uncertainty. CIC-to-GDP ratio rose to 14.5%. This hoarding behaviour (similar to a liquidity trap) is a classic response to uncertainty. Post-COVID normalisation: CIC growth has moderated as digital payments absorb transaction demand. Denomination composition (March 2024): Rs 500 notes account for 87.3% of currency value in circulation but only 37.5% by number. Rs 100 notes: 4.3% by value, 18.8% by number. Rs 200 notes: 2.5% by value, 8.1% by number. Rs 10 and Rs 20 notes together: less than 1% by value but 14.3% by number. The high concentration in Rs 500 notes post-withdrawal of Rs 2000 notes is notable. RBI's Clean Note Policy: RBI withdraws soiled (worn-out) notes from circulation and replaces them with fresh notes. The lifespan of a note depends on denomination — Rs 10 notes may last 1-2 years, Rs 500 notes may last 4-5 years. RBI shredded approximately 2,200 crore pieces of soiled notes in FY24. The cost of currency management (printing, transportation, secure storage, destruction) is a significant RBI expenditure — approximately Rs 4,984 crore in FY24.
Money Supply Data — How to Read RBI Publications
For exam preparation and analytical purposes, understanding how RBI publishes money supply data is essential. Key RBI publications: (1) Weekly Statistical Supplement (WSS): Published every Friday. Contains reserve money data (M0), RBI's balance sheet, and key monetary variables. Most current high-frequency monetary data. (2) Money Supply (M3) data: Published fortnightly. Shows components and sources of M3. Components side: Currency with public, demand deposits, time deposits, other deposits with RBI. Sources side: Net bank credit to government (Centre + States), bank credit to commercial sector, net foreign exchange assets, government's currency liabilities, banking sector's net non-monetary liabilities. (3) Monthly Bulletin: Comprehensive monetary and banking statistics. Includes sectoral deployment of bank credit (agriculture, industry, services, personal loans), deposit growth, and credit-deposit ratio. (4) Annual Report: Full-year analysis of monetary developments, credit growth, inflation dynamics, and policy actions. (5) Report on Trend and Progress of Banking: Annual assessment of banking sector health. Key ratios to monitor: M3 growth rate (target: consistent with nominal GDP growth + inflation target). Credit growth rate (indicates investment demand). Credit-Deposit ratio (how much of deposits are being lent — optimal range 70-80%). Currency-Deposit ratio (indicates cash preference). Reserve Money growth rate (indicator of RBI's monetary stance). Incremental Credit-Deposit ratio (marginal lending from new deposits — can exceed 100% if banks draw down excess SLR). The relationship between money supply and fiscal deficit: Government borrowing (fiscal deficit financed by G-Secs) expands money supply when banks buy G-Secs using depositors' money. If RBI directly buys G-Secs (monetisation), it directly expands M0. This is why FRBM Act prohibits RBI participation in primary G-Sec auctions — to prevent inflationary monetisation. However, RBI can buy G-Secs in the secondary market (OMOs) for liquidity management — this technically increases M0 but is justified as a monetary policy tool, not fiscal financing.
Relevant Exams
Money supply is a high-frequency topic especially in banking exams (IBPS PO/Clerk) and UPSC. Questions on M1 vs M3 definitions, components of reserve money, money multiplier, credit creation, and the CBDC framework appear regularly. SSC exams test factual recall — who issues one-rupee notes, what is legal tender, Minimum Reserve System, and demonetisation dates. UPSC Prelims asks analytical questions combining money supply with inflation, velocity of circulation, and monetary policy. UPSC Mains GS Paper 3 may ask essays on digital currency, demonetisation impact, or the relationship between money supply and inflation. Banking exams increasingly test CBDC, UPI transaction data, and digital payments framework.