Producer Price Index_

Event_Log

1. 011979Islamic RevolutionAssociation

   Mohammad Reza Shah's government falls; the Islamic Republic is proclaimed under Ayatollah Khomeini on 1 April 1979.

   Why this link: Supply disruption, the collapse of the price-control apparatus, and currency depreciation contributed to accelerating consumer-price inflation in the years following the revolution.

   Caveat: The subsequent war economy and its own shortages/rationing are a further, larger driver of the same inflation trend from late 1980 onward, making the revolution's isolated share hard to quantify.

   Lag: 1-3 year lag, gradualSource: Encyclopaedia Britannica
2. 021980Iraq invades Iran, opening the Iran-Iraq WarAssociation

   Saddam Hussein's invasion of Iran begins an eight-year war financed heavily by loans from Gulf Arab states; Iraq accumulates an estimated $30-40bn in war debt to Kuwait and Saudi Arabia alone, a burden that later feeds Iraq's economic grievances against Kuwait ahead of the 1990 invasion.

   Why this link: The eight-year war forced Iran into massive war financing (central-bank money creation, budget deficits), curtailed oil exports from the front-line Kharg terminal, disrupted trade routes, and drove military spending sharply higher, touching essentially every macro, fiscal, trade and price series for Iran across the 1980s.

   Caveat: The war coincided with the post-1979 Revolution's own economic disruption, nationalizations, capital flight, and separately imposed US/Western sanctions; disentangling the war's specific contribution from these simultaneous shocks is not possible from the aggregate data alone.

   Lag: gradual over 8 years (1980-1988)Source: Encyclopaedia Britannica

Related_Laws

Laws related to this measure. A law need not have caused a movement to be listed; confidence reflects how strong the link actually is.

1. 2003Act on Preventing Price Increases Through the End of the Third Development Plan

   Passed in 2003, this law freezes increases in the state-set prices of government goods and services that fall outside the rules of the Third Development Plan, and requires ministries and the parliament and judiciary to cut a share of their operating budgets to fund subsidies for basic goods.

   Why this link: A direct, single-article national price-control instrument: it retroactively cancels all state-sector price/tariff increases made outside the Third Plan's own rules and redirects budget savings toward subsidizing basic goods, an explicit anti-inflation measure named in the text as being 'in execution of inflation-control policies'.

   Caveat: Iran's CPI/WPI trajectory in the early 2000s was also driven by monetary expansion (liquidity growth), the managed exchange-rate regime, oil-revenue inflows, and structural subsidy costs; a freeze on formal state-sector prices does not necessarily control the broader consumer basket, and the law itself expired with the Third Plan (~2004), limiting any lasting effect.

   Lag: same fiscal year (1382-83)
2. 2010Executive Bylaw of Article 7 of the Targeted Subsidies Act

   Issued in 2010 to implement Article 7 of the 2010 Targeted Subsidies Act, this bylaw sets up the household economic-information questionnaire used to identify subsidy recipients and defines cash and in-kind subsidy payments, including discounted utility prices and microfinance for economic empowerment of low-income households.

   Why this link: This bylaw operationalizes the resource-allocation side (cash/in-kind transfers, discriminatory utility pricing, welfare programs funded from subsidy savings) of Iran's landmark December 2010 subsidy reform, whose companion price-setting provisions sharply raised energy/fuel prices; the domestic oil-product consumption series and the CPI series for 2010-2012 are the standard indicators cited for this reform's impact.

   Caveat: This specific bylaw governs downstream distribution of subsidy savings (welfare/cash-transfer programs), not the fuel/electricity price-setting itself, which is set by companion instruments under the same parent law -- the causal chain to consumption/price charts runs through the broader reform package, not this bylaw alone. The 2010-2012 period also saw intensifying international sanctions and currency depreciation, which independently drove inflation and consumption patterns.

   Lag: same fiscal year onset (late 2010), effects unfolding over 2011-2017
3. 2021Value Added Tax Act

   Passed in 2021, this law is Iran's current Value Added Tax Act, imposing VAT on the sale of goods and provision of services nationwide and setting the base rate, exemptions, and administrative procedures for collection, refunds and penalties under the Tax Affairs Organization.

   Why this link: A national VAT is passed through to retail prices to some degree; the 2021 law re-legislated the VAT regime at a rate (9%) close to its predecessor's, so it is at most one of several price-level drivers.

   Caveat: Inflation in Iran over this period is overwhelmingly driven by exchange-rate depreciation and money-supply growth under sanctions, not VAT changes; a single-digit VAT rate has only a marginal, hard-to-isolate effect on aggregate CPI/WPI.

   Lag: same fiscal year, minor pass-through