Inflation and Prices

Flagship anchor

Inflation is a sustained rise in the general price level over time, which erodes the purchasing power of money. India measures it mainly through the Consumer Price Index (CPI) and the Wholesale Price Index (WPI). The RBI's monetary policy targets CPI inflation at 4 percent within a 2 to 6 percent band (see money and banking and the rbi). CAPF tests the index definitions, who compiles each (CPI by the NSO under MoSPI, WPI by the Office of the Economic Adviser under DPIIT), the base years, the types and causes of inflation, who gains and loses, the control measures, and the family of related terms (deflation, disinflation, stagflation, reflation). The standard references are the RBI Monetary Policy Report, NCERT Class XII "Introductory Macroeconomics", the Economic Survey, and Ramesh Singh's "Indian Economy".

Types and causes of inflation

By intensity

• Creeping: mild, low single digit, slow.
• Walking or trotting: faster but still moderate.
• Running: rapid, high single to low double digit.
• Galloping or hyperinflation: very high, money loses value rapidly (the classic example being Weimar Germany or Zimbabwe).

By cause

• Demand-pull inflation: aggregate demand exceeds aggregate supply ("too much money chasing too few goods"). Driven by rising incomes, easy credit, and government spending. A demand-side phenomenon.
• Cost-push inflation: rising costs of production (wages, raw materials, fuel) push prices up even without extra demand. A supply-side phenomenon.
• Imported inflation: higher prices of imported goods (notably crude oil) or a weaker rupee feed into domestic prices. See external sector trade and bop.
• Structural inflation: arises from bottlenecks and rigidities in a developing economy (poor supply chains, infrastructure gaps).

Headline versus core

• Headline inflation is the all-items rate.
• Core inflation strips out volatile food and fuel to reveal the underlying, sticky trend that monetary policy can influence. Central banks watch core to avoid over-reacting to temporary food-price spikes.

Related terms

• Deflation: a sustained fall in the general price level (negative inflation). Harmful because it can depress spending and output (consumers defer purchases expecting lower prices), raising the real debt burden.
• Disinflation: a fall in the rate of inflation; prices still rise, but more slowly.
• Stagflation: the difficult combination of stagnant growth (high unemployment) with high inflation at the same time, which defeats the usual policy trade-off.
• Reflation: deliberate stimulation of demand to lift prices out of deflation.
• Skewflation: a price rise concentrated in a few commodities (often food items such as onions or pulses) while the general level is stable.

Static facts to memorise

CPI versus WPI

Inflation by cause

The CPI sub-groups and weights (broad)

The CPI (Combined) basket is divided into major groups, with food carrying the largest weight, which is why food-price shocks move headline CPI sharply:

Because food has such a large weight, monetary policy watches core inflation (excluding food and fuel) to read the underlying trend, while supply-side action targets food directly.

Effects: who gains and who loses

The clean exam line: borrowers gain, lenders and fixed-income earners lose.

Other price concepts

• Base effect: the influence of the previous year's price level on the current inflation rate; a high base last year mechanically lowers this year's rate even if prices are unchanged month-on-month.
• Inflationary expectations: if people expect prices to keep rising, they demand higher wages and front-load purchases, which becomes self-fulfilling. Anchoring expectations is a core aim of inflation targeting.
• Phillips curve: the short-run inverse relationship between inflation and unemployment; stagflation is the breakdown of this trade-off.
• Indexation: linking payments (such as dearness allowance, computed from CPI-IW) to a price index to protect real incomes.
• Real versus nominal interest rate: the real rate equals the nominal rate minus inflation; high inflation can make real rates negative, hurting savers.

Measures to control inflation

• Monetary measures (RBI): raise the repo rate, CRR or SLR; conduct open market sales to absorb liquidity. The transmission runs from the policy rate to bank lending rates to demand and finally to prices. See money and banking and the rbi.
• Fiscal measures (Government): cut public spending, raise direct taxes to dampen demand, rationalise subsidies. See budget and fiscal policy.
• Supply-side and administrative measures: import essential goods, release buffer stocks of foodgrains, curb hoarding through the Essential Commodities Act, restrict or ban exports of scarce commodities, cut import duties on key items, impose stock limits. See agriculture and rural economy.

Governance and security angle

Sustained high inflation, especially in food and fuel, is a social-stability concern: it squeezes the poor hardest, can drive unrest and protests, and erodes confidence in governance. Buffer-stock management and the public distribution system are therefore as much about order as about welfare. Price stability is treated as a public good that underpins both economic and internal-security objectives, which is why food inflation in particular is watched so closely and why the Government intervenes through export bans and stock limits when prices of staples spike. Onion and pulse price shocks have repeatedly become political and law-and-order issues.

How CAPF asks it (authored practice)

1. The Consumer Price Index (Combined) in India is compiled by: a) the RBI b) the NSO under MoSPI c) the Office of the Economic Adviser d) the Labour Bureau Answer: b. CPI (Combined) is compiled by the NSO under MoSPI; the WPI is by the Office of the Economic Adviser.

2. Inflation that is caused by a rise in the prices of imported crude oil is best classified as: a) demand-pull b) cost-push and imported c) structural d) core Answer: b. Costlier imported inputs push up production costs, a cost-push and imported phenomenon.

3. A situation of high inflation combined with high unemployment and stagnant output is called: a) deflation b) disinflation c) stagflation d) reflation Answer: c. Stagflation is stagnation plus inflation occurring together.

4. Which group typically gains during a period of unexpected inflation? a) pensioners b) creditors c) borrowers d) savers in cash Answer: c. Borrowers repay loans in money of lower real value.

5. The Wholesale Price Index in India: a) includes services b) is the headline measure for monetary policy c) excludes services and is dominated by manufactured products d) is compiled by the RBI Answer: c. WPI excludes services; CPI is the monetary-policy headline.

6. A fall in the rate of inflation, while prices are still rising, is called: a) deflation b) disinflation c) stagflation d) reflation Answer: b. Disinflation is a slowing of inflation; prices still rise, but more slowly.

7. The short-run inverse relationship between inflation and unemployment is captured by the: a) Lorenz curve b) Laffer curve c) Phillips curve d) Kuznets curve Answer: c. The Phillips curve; stagflation represents its breakdown.

Common confusion

• Inflation versus disinflation versus deflation: inflation is rising prices; disinflation is rising prices but at a slower rate; deflation is actually falling prices.
• CPI versus WPI: CPI is retail and includes services (NSO); WPI is wholesale, excludes services, and is compiled by the Office of the Economic Adviser (DPIIT).
• Demand-pull versus cost-push: demand-pull is excess demand; cost-push is rising costs of supply.
• Headline versus core: headline includes food and fuel; core excludes them to show the underlying trend.
• Devaluation-driven price rise versus general inflation: imported inflation is a subset of the general price rise caused specifically by the external sector.

Memory hook

"Disinflation slows, Deflation falls; demand-Pull Pulls prices up from the demand side, cost-Push Pushes from the supply side." Stagflation = "stag" (stagnant growth) + "flation" (inflation), the worst of both.

Night before

• Inflation = sustained rise in the general price level; CPI is the policy headline.
• CPI by NSO (MoSPI); WPI by the Office of the Economic Adviser (DPIIT); WPI excludes services.
• RBI target: CPI 4 percent, band 2 to 6.
• Demand-pull (too much demand) versus cost-push (rising costs); borrowers gain, lenders lose.
• Stagflation = low growth + high inflation; deflation = falling prices.

Glossary

• Inflation: a sustained rise in the general price level.
• CPI: Consumer Price Index, a retail-price index, the policy headline.
• WPI: Wholesale Price Index, a bulk-stage index excluding services.
• Base year: the reference year whose index is set to 100.
• Demand-pull inflation: inflation from excess aggregate demand.
• Cost-push inflation: inflation from rising input or wage costs.
• Imported inflation: inflation transmitted from costlier imports or a weaker rupee.
• Headline inflation: the all-items inflation rate.
• Core inflation: inflation excluding volatile food and fuel.
• Deflation: a sustained fall in the general price level.
• Disinflation: a fall in the rate of inflation, prices still rising.
• Stagflation: high inflation with stagnant growth and high unemployment.
• Reflation: deliberate demand stimulation to escape deflation.
• Skewflation: a price rise concentrated in a few commodities.
• GDP deflator: the economy-wide price index, nominal over real GDP times 100.
• Base effect: the influence of the prior year's price level on the current inflation rate.
• Inflationary expectations: anticipated future inflation that can become self-fulfilling.
• Phillips curve: the short-run inverse link between inflation and unemployment.
• Real interest rate: the nominal interest rate minus the inflation rate.
• Indexation: linking a payment to a price index to protect real value.

Related notes

• money and banking and the rbi (the MPC, repo rate, and inflation targeting).
• basics national income and growth (the GDP deflator as a price gauge).
• budget and fiscal policy (fiscal measures against inflation).
• agriculture and rural economy (food prices, MSP, buffer stocks, hoarding controls).
• external sector trade and bop (imported inflation via crude oil and the rupee).
• syllabus index

Current affairs hook

CPI inflation, the RBI policy stance, and food-price spikes (especially in vegetables, cereals and pulses) are recurring Budget and Survey themes. CPI inflation has at times moved into the upper part of the target band, driven by food; treat the exact current figure as currency-sensitive and verify against the latest CPI release and RBI policy statement. Global crude oil prices and the rupee exchange rate are the standard imported-inflation hooks, and the periodic revision of CPI and WPI base years is itself a current-affairs item.