Money & Money Supply
Money & Money Supply
Money supply aggregates (M0-M4), reserve money, credit creation, money multiplier, velocity of circulation, CBDC, demonetisation, and UPI form the backbone of banking and UPSC papers. Know M1 vs M3 definitions, who issues the one-rupee note, the Minimum Reserve System, and the e-Rupee framework. Expect questions linking money supply growth to inflation via the Quantity Theory.
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of Rs 500 and Rs 1000 notes (November 8) — sharp contraction in currency in circulation; 86% of currency by value withdrawn
Rs 2000 notes withdrawn from circulation (May 19) — exchanged/deposited by September 30, 2023; 97.76% returned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 performs four primary functions: (1) Medium of Exchange — eliminates the double coincidence of wants required in barter. Any commodity widely accepted as a medium of exchange qualifies as money (the most essential function). (2) Measure of Value (Unit of Account) — provides a common denominator for expressing prices. Without it, a barter economy with n goods requires n(n-1)/2 exchange ratios. (3) Store of Value — lets purchasing power be saved for future use. Money is the most liquid store of value but inflation erodes it — real assets (land, gold) store value better during high inflation. (4) Standard of Deferred Payments — facilitates credit transactions and future obligations (loans, contracts, wages). This function works only when money maintains stable value. Some economists add a fifth: Transfer of Value — enabling purchasing power transfer across persons and places. Money has evolved through stages: commodity money (cattle, salt, shells, gold, silver) to metallic coins (standardised weight and purity) to paper currency (representative money backed by gold, then fiat money) to bank money (cheques, demand drafts, demand deposits) to plastic money (credit/debit cards) to digital money (UPI, mobile wallets, CBDC). India launched the e-Rupee (CBDC) pilot in 2022. Gresham's Law states "bad money drives out good money" — when two forms 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/savings account deposits withdrawable 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 (a close substitute for bank savings, though slightly less liquid). M3 (Broad Money) = M1 + Time deposits (Fixed Deposits) with commercial banks. M3 is the most commonly used measure, often called "aggregate monetary resources." Time deposits are less liquid due to lock-in periods (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 the least. M3 is the most tracked — RBI publishes M3 data fortnightly. As of March 2024, M3 stood at approximately Rs 228 lakh crore. The currency-to-deposit ratio has been declining — from about 25% in the 1990s to about 15% in 2024 — as digital payments and bank deposits grow. This trend accelerated after demonetisation (2016) and UPI adoption. Important: demand deposits DO NOT include inter-bank deposits (deposits banks keep with each other). Only deposits of the public count in money supply.
Reserve Money (M0 / High-Powered Money)
Reserve Money (M0) = Currency in Circulation + Bankers' Deposits with RBI + Other Deposits with RBI. 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 supports multiple rupees of broad money (M3) through credit creation. Currency in Circulation = Notes in circulation + Rupee coins + Small coins (includes currency held by the public AND cash in commercial bank vaults). Bankers' deposits with RBI = CRR deposits that banks must maintain + voluntary excess reserves. RBI controls M0 directly through: (1) Open Market Operations (OMOs) — RBI buys G-Secs to inject reserve money (M0 increases), sells to absorb (M0 decreases). (2) CRR changes — higher CRR locks more money with RBI, slowing credit creation. (3) Repo/reverse repo under LAF — repo (RBI lends) injects liquidity; reverse repo (RBI absorbs) reduces it. (4) Foreign exchange operations — RBI buys dollars (pays rupees, M0 rises), sells dollars (absorbs rupees, M0 falls). Sources of Reserve Money (RBI balance sheet assets): net RBI credit to government (G-Sec holdings) + RBI credit to banks (repo lending) + net foreign exchange assets + government's currency liabilities to the public (rupee coins). As of March 2024, Reserve Money stood at 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). India's multiplier is approximately 5 — every Rs 1 of reserve money supports approximately Rs 5 of broad money. Higher CRR reduces the multiplier. Higher currency-deposit ratio (people holding more cash vs bank deposits) also reduces it.
Credit Creation by Commercial Banks
Commercial banks create money through credit creation (deposit multiplication). When a bank receives a deposit, it keeps a fraction as reserves (CRR + voluntary excess reserves) and lends the rest. The loan amount gets deposited in another bank, which again keeps reserves and lends — this geometric process multiplies the original deposit. Example: Initial deposit Rs 10,000, CRR 4%. Bank A keeps Rs 400, lends Rs 9,600. Bank B receives Rs 9,600, keeps Rs 384, lends Rs 9,216. Total deposits created = Initial Deposit / Reserve Ratio = 10,000 / 0.04 = Rs 2,50,000. The Deposit Multiplier = 1/r where r = reserve ratio. Practical limitations: (1) Not all loans return as deposits — some may be held as cash (leakage). (2) Banks may keep excess reserves beyond CRR (especially during uncertainty). (3) Loan demand may be insufficient — banks cannot force lending. (4) SLR (currently 18%) requires banks to hold 18% of NDTL in G-Secs, gold, or approved securities, reducing loanable funds. (5) Capital adequacy (Basel III requires CRAR of 9% in India, vs 8% globally) limits lending relative to capital. Monetary policy implication: RBI does not directly control M3. It controls M0 and influences the multiplier through CRR, SLR, and interest rate policy. If banks are reluctant to lend (risk aversion), even large reserve money injections may not increase M3 proportionally — the "pushing on a string" problem seen during 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 RBI Governor's signature with the promise "I promise to pay the bearer the sum of..." — 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 sole right to issue bank notes. Notes are printed at four presses: Dewas (MP) and Nasik (Maharashtra), owned by SPMCIL (a GoI enterprise); Mysuru (Karnataka) and Salboni (West Bengal), owned by BRBNMPL (RBI's wholly-owned subsidiary). All coins are minted by GoI at four mints: Mumbai, Kolkata, Hyderabad, and Noida, under the Coinage Act 2011. RBI acts as agent for coin distribution. RBI follows the Minimum Reserve System (MRS) since 1957 — maintaining minimum reserves of Rs 200 crore (Rs 115 crore in gold + Rs 85 crore in foreign securities). Before 1957, 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: RBI notes are legal tender for unlimited amounts. Re 1 coins are legal tender for any amount. Coins of Rs 2, 5, 10, 20 are legal tender up to Rs 1,000. Notes can be refused if torn, defaced, or damaged beyond recognition — RBI has a Note Refund Policy for mutilated notes. Denomination: RBI can issue notes in 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 withdrew Rs 500 and Rs 1000 notes to curb WWII-era black money. 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. 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 (effective midnight). Unprecedented in scale — Rs 15.44 lakh crore (86.4% of currency by value) demonetised. New Rs 500 and Rs 2000 notes introduced. Stated objectives: curb black money, push digital payments, attack terror financing, 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 57% contraction. GDP growth in Q3 FY17 slowed to 6.1% from 7.3%. The informal sector was severely hit; estimated 1.5 million jobs lost (CMIE). 99.3% of demonetised currency returned to banks (Rs 15.31 of Rs 15.44 lakh crore) — undermining the objective of extinguishing cash-held black money. However, 1.8 crore suspect depositors were flagged for tax scrutiny. Digital payments surged: UPI transactions grew from 0.3 crore/month (November 2016) to 1,342 crore/month (March 2024). BHIM app launched in December 2016. RBI's new-note printing cost was Rs 7,965 crore. Rs 2000 note withdrawal (May 2023): notes remained legal tender and could be exchanged/deposited by September 30. Of Rs 3.56 lakh crore in circulation, 97.76% (Rs 3.48 lakh crore) was returned.
Velocity of Circulation & Quantity Theory
Velocity of Circulation (V) = total value of transactions / money supply — the number of times a unit of money changes hands in a given period. Higher velocity means money circulates faster, financing more transactions per unit. Fisher's Equation of Exchange: MV = PT, where M = money supply, V = velocity, P = price level, T = transaction volume. This identity holds true by definition. The Quantity Theory of Money (classical view): assumes V and T are constant in the short run. If so, an increase in M leads to a proportional increase in P (inflation). Money is "neutral" — affecting only prices, not real output. Cambridge Cash Balance Approach: Md = kPY, where k = fraction of nominal income held as money, Y = real income. k = 1/V, so mathematically equivalent to Fisher but conceptually different — it emphasises money demand (why people hold money), foreshadowing Keynes. Keynes's Liquidity Preference Theory: people demand money for three motives — transactions (day-to-day purchases), precautionary (emergencies), and speculative (exploiting expected interest rate/bond price changes). Interest rate is the "price" of holding money over interest-bearing bonds. In a liquidity trap, rates are so low that everyone prefers cash — monetary policy becomes ineffective (V falls as fast as M rises). Monetarism (Milton Friedman): "Inflation is always and everywhere a monetary phenomenon." V is stable and predictable. Central banks should follow a fixed monetary growth rule (k-percent rule). India's experience: post-demonetisation, velocity fell sharply as more money sat in banks. During COVID, velocity collapsed again as spending froze. As the economy recovered and digital payments accelerated, velocity patterns shifted. UPI effectively increases V — the same money facilitates more transactions as transfer speed moves from days (cheques) to seconds (UPI).
Central Bank Digital Currency (CBDC) — e-Rupee
A CBDC is a digital form of fiat currency issued by the central bank. Unlike cryptocurrencies (Bitcoin, Ethereum), CBDC is centralised, regulated, and sovereign-backed. RBI released its "Concept Note on CBDC" in October 2022. Two forms: (1) Wholesale CBDC (e-Rupee-W) — for financial institutions. Pilot launched November 1, 2022 for G-Sec settlement. 9 participating banks (SBI, Bank of Baroda, Union Bank, HDFC Bank, ICICI Bank, Kotak, Yes Bank, IDFC First, HSBC). Reduces settlement risk and improves inter-bank transaction efficiency. (2) Retail CBDC (e-Rupee-R) — for the general public. Pilot launched December 1, 2022 in select cities (initially Mumbai, New Delhi, Bengaluru, Bhubaneswar; expanded to 13 cities). Users hold e-Rupee in bank-provided digital wallets. Supports P2P and P2M transactions, works online and offline (for small-value transactions without internet). Key features: (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 spendable only on fertiliser), expiring money (stimulus with a spend-by date). (e) Privacy — RBI targets "managed anonymity" (small transactions anonymous like cash, large transactions tracked via KYC). How CBDC differs from UPI: UPI transfers bank deposits between accounts. CBDC is actual digital cash — a direct claim on RBI. When you pay via CBDC, digital currency moves like physical cash. Banking implication: if people shift deposits to risk-free CBDC, banks face deposit disintermediation — reducing credit creation capacity. RBI will manage this through design (no CBDC interest, transaction limits). Global context: China's e-CNY leads with 260+ million wallets. Bahamas launched the Sand Dollar (2020) — first nationwide CBDC. EU is developing the Digital Euro. India's e-Rupee is among the earliest major-economy CBDC pilots.
Black Money, Hawala & Informal Economy
Black money is income or wealth on which taxes remain unpaid. It exists as cash (physical currency outside the banking system) and assets (real estate, gold, foreign accounts, shell companies). India's parallel economy is estimated at 20-30% of GDP. The 2016 demonetisation targeted cash-based black money but left asset-based black money untouched. Hawala: an informal value transfer system outside conventional banking. A person gives money to a hawala dealer in one country; the recipient collects equivalent money from a dealer in another country. No physical money moves — settlement happens through trade, goods, or periodic netting. Hawala serves legitimate remittances (cheaper and faster than banks), tax evasion, and terror financing. FATF identifies hawala as a key ML/TF risk. Hawala is illegal in India under FEMA 1999. The Enforcement Directorate (ED) investigates violations. Measures against black money: (1) Benami Transactions (Prohibition) Amendment Act 2016 — transactions in someone else's name to hide ownership are punishable; properties can be confiscated. (2) Black Money Act 2015 — foreign income/asset tax evasion 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; 107 countries (including Switzerland) share financial data. (6) Cash restrictions: PAN mandatory for transactions above Rs 2 lakh. No cash payment above Rs 2 lakh in a single transaction (Section 269ST). Cash donations to political parties limited to Rs 2,000.
Digital Payments & UPI Revolution
India has experienced a digital payments revolution that fundamentally altered money's velocity and usage. UPI (Unified Payments Interface): launched August 2016 by NPCI. Real-time, 24x7 interbank transfer via mobile phones. UPI transactions (March 2024): 1,342 crore transactions worth Rs 19.78 lakh crore in a single month. FY24 total: 13,116 crore transactions 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), linked to bank accounts (not wallets), zero-cost P2P transfers, QR code-based merchant payments, UPI Lite (offline small-value up to Rs 500), UPI 123PAY (feature phone via IVR), UPI for NRIs (NRE/NRO accounts). Cross-border: UPI linked to Singapore's PayNow (September 2023), Sri Lanka, UAE, France. Other systems: NEFT (batch processing, 24x7 since December 2019), RTGS (real-time for transfers above Rs 2 lakh, 24x7 since December 2020), IMPS (real-time, precursor to UPI), NACH (recurring payments), BBPS (bill payment), AePS (biometric authentication for basic banking at micro-ATMs). Digital payments' impact on money supply: (1) reduces physical currency demand — 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 transact via AePS; (4) improves tax compliance — digital trails make evasion harder; (5) reduces cash management cost — RBI spends Rs 4,000-5,000 crore annually on printing, distributing, and managing physical currency.
Money Supply & Inflation Linkage
The money supply-inflation relationship is among the most important macroeconomic linkages. Classical/Monetarist view: MV = PY. If V is stable and Y grows at a fixed rate, excess M growth directly causes inflation. Friedman: "Inflation is always and everywhere a monetary phenomenon." Keynesian view: inflation can also stem from demand-pull (excess aggregate demand), cost-push (supply shocks like oil prices, wage hikes), and structural factors (supply bottlenecks). Money supply growth is necessary but not sufficient for sustained inflation. In the short run, M increases may raise output (not just prices) if spare capacity exists. India's experience: (1) 1970s-80s — high fiscal deficits monetised by RBI via ad hoc Treasury Bills. M3 growth averaged 17-18%, inflation 8-10%. Strong positive correlation. (2) 1991 reforms — FRBM Act and prohibition on primary G-Sec monetisation ended the cycle. M3 growth moderated. (3) 2008-2013 — large fiscal deficits and expansionary policy drove CPI above 10%. RBI tightened aggressively. (4) 2016-2020 — demonetisation caused temporary M3 contraction. CPI moderated to 4-5%. (5) COVID-2020 — RBI expanded M0 significantly (CRR cut from 4% to 3%, expanded repo, GSAP). M3 surged 12%+. Inflation initially stayed low as velocity collapsed (lockdown). As the economy reopened (2021-22), supply disruptions + excess liquidity pushed CPI above the 6% upper band. RBI raised repo from 4% to 6.5% and absorbed excess liquidity. RBI's current framework: Flexible Inflation Targeting (since 2016). Target: CPI at 4% (+/-2% band). Repo rate is the primary instrument. Money supply growth is monitored but not directly targeted. Transmission runs through: repo rate to bank lending/deposit rates to credit growth to aggregate demand to inflation.
Near Money & Liquidity Spectrum
The liquidity spectrum ranges from the most liquid (cash) to the least (real estate). Near Money refers to highly liquid assets quickly convertible to cash but not money themselves: Treasury Bills (91/182/364-day maturity, traded in secondary market), Fixed Deposits (breakable with penalty), Post Office deposits, Government Securities (traded on NDS-OM), Mutual Fund units (especially liquid funds with same-day redemption), Commercial Paper, and Certificates of Deposit. The money vs near money distinction matters because: (1) abundant near-money substitutes reduce actual money demand for transactions — velocity effectively increases; (2) interest rate changes affect the relative attractiveness of money (zero/low interest) vs near money (higher interest) — influencing money demand; (3) financial innovation creates new near-money instruments that M3 may not fully capture. Liquid Funds in India: AUM exceeds Rs 5 lakh crore. These invest in instruments with maturity up to 91 days and offer T+1 redemption. For corporate treasurers, liquid funds function as money — parking surplus cash and redeeming as needed. This blurs the line between M3 and effective purchasing power. Money market instruments: Call Money/Notice Money (overnight/short-term inter-bank lending), Repo (RBI's LAF), Treasury Bills, Commercial Paper (CP), Certificates of Deposit (CD), TREP (Triparty Repo, replaced CBLO). These are close money substitutes whose yields indicate liquidity conditions.
Monetary Base Approach vs Credit Approach
Two approaches explain money supply determination: (1) Monetary Base (Money Multiplier) Approach: M3 = m x M0, where m is the multiplier. The central bank controls M0; m depends on CRR, currency-deposit ratio, and excess reserve ratio. M0 changes cause proportional M3 changes scaled by the multiplier. This is the standard textbook approach. Limitation: the multiplier is unstable in practice — it shifts 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. When a bank grants a loan, it simultaneously creates a deposit (money). The sequence runs: Loans then Deposits then Reserves (banks borrow reserves from RBI/interbank market after lending). Money supply is demand-determined — growing when creditworthy borrowers seek loans. The central bank influences the price of credit (interest rate) but cannot directly control the quantity. This better explains why M3 sometimes grows faster or slower than M0 would predict. India's practical approach: RBI combines both. It sets the repo rate to influence credit demand (price-based) and manages liquidity through OMOs, CRR, and LAF (quantity-based). The shift from quantity-targeting to interest rate-targeting happened in the late 1990s. Flexible Inflation Targeting (2016) formalised the interest rate approach. RBI publishes: (a) M3 growth data (fortnightly), (b) sectoral credit deployment (monthly), (c) reserve money data (weekly), (d) liquidity conditions via LAF data (daily). These help analysts assess whether money supply growth aligns 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) — earliest Indian coins in silver/copper. Mauryan empire standardised coinage. Kautilya's Arthashastra mentions a superintendent of mint (Lakshanadhyaksha). Gupta-period gold coins rank among the finest in the ancient world. Medieval Period: Delhi Sultanate introduced the Tanka (silver) and Jital (copper). Muhammad bin Tughlaq's token currency experiment (brass/copper at silver Tanka face value) failed catastrophically — counterfeiting caused economic chaos. Sher Shah Suri introduced the Rupiya (silver, 178 grains) in 1540-45 — the direct ancestor of the modern Rupee. Mughal period standardised the silver rupee, gold mohur, and 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 — silver rupee as standard. (3) Paper Currency Act 1861 — government began issuing paper currency. (4) Hilton-Young Commission (1926) recommended creating a central bank, leading to RBI's establishment. (5) RBI established April 1, 1935 under RBI Act 1934. Initially privately owned, nationalised January 1, 1949. (6) Under the gold exchange standard, the rupee was pegged to the British pound. (7) Devaluations: 1949 (forced by pound devaluation), 1966 (36.5%, economic crisis), 1991 (two-step as part of LPG reforms). Post-Independence: gold standard abandoned, managed float since 1993, RBI shifted from direct instruments (CRR/SLR) to indirect (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. Currency-to-GDP ratio: approximately 11.5% — indicating the economy's dependence on physical cash. Trends: Pre-demonetisation CIC was Rs 17.97 lakh crore (November 4, 2016). Post-demonetisation low: Rs 7.8 lakh crore (January 6, 2017). CIC crossed the pre-demonetisation level by March 2018. COVID impact: CIC surged to Rs 28.3 lakh crore by March 2021 as people hoarded cash due to uncertainty — CIC-to-GDP ratio rose to 14.5% (a classic liquidity trap response). 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 but only 37.5% by number. Rs 100 notes: 4.3% by value, 18.8% by number. Rs 200: 2.5% by value, 8.1% by number. Rs 10 and Rs 20 together: less than 1% by value but 14.3% by number. The high concentration in Rs 500 post-Rs 2000 withdrawal is notable. RBI's Clean Note Policy: RBI withdraws soiled notes and replaces with fresh ones. Lifespan varies — Rs 10 notes last 1-2 years, Rs 500 notes 4-5 years. RBI shredded approximately 2,200 crore soiled note pieces in FY24. Currency management cost (printing, transportation, secure storage, destruction): approximately Rs 4,984 crore in FY24.
Money Supply Data — How to Read RBI Publications
Understanding RBI's money supply publications is essential for exams and analysis. Key publications: (1) Weekly Statistical Supplement (WSS) — published every Friday. Contains reserve money (M0), RBI's balance sheet, and key monetary variables. Most current high-frequency data. (2) Money Supply (M3) data — published fortnightly. Shows components (currency with public, demand deposits, time deposits, other deposits with RBI) and sources (net bank credit to government, bank credit to commercial sector, net foreign exchange assets, government's currency liabilities, banking sector's net non-monetary liabilities). (3) Monthly Bulletin — monetary and banking statistics including sectoral credit deployment (agriculture, industry, services, personal loans), deposit growth, credit-deposit ratio. (4) Annual Report — full-year analysis of monetary developments, credit growth, inflation dynamics, policy actions. (5) Report on Trend and Progress of Banking — annual banking sector health assessment. Key ratios to track: M3 growth rate (should align with nominal GDP growth + inflation target), credit growth (indicates investment demand), credit-deposit ratio (optimal 70-80%), currency-deposit ratio (cash preference indicator), reserve money growth (RBI's monetary stance), incremental credit-deposit ratio (can exceed 100% if banks draw down excess SLR). Money supply and fiscal deficit: government borrowing (fiscal deficit financed by G-Secs) expands money supply when banks buy G-Secs with depositor money. If RBI buys G-Secs directly (monetisation), it directly expands M0. 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 — technically increasing M0 but 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.