JPMorgan: Israel’s economic outlook hinges on length of Iran war
Bank warns prolonged conflict could widen deficit, delay rate cuts, and weigh on growth.
JPMorgan Chase published an in-depth analysis on Thursday examining potential war scenarios involving Iran and their implications for the Israeli economy. The report does not introduce new data or revise forecasts, but instead frames the current situation using existing research and historical comparisons.
Last week, after issuing two reports and updating its outlook on Israel, JPMorgan, the world’s largest bank, revised its macroeconomic projections. It lowered its 2026 growth forecast by 0.7 percentage points to 4.1%, raised its inflation forecast by 0.4 percentage points to 2.4%, and now expects only one interest rate cut this year, to 3.75%, compared with three cuts previously anticipated.
The central assumption underlying the analysis is straightforward: the economic impact will depend primarily on the duration of the war. A longer conflict would lead to higher defense spending, a wider fiscal deficit, and weaker growth. While the bank’s base case assumes a relatively short conflict, it highlights meaningful risks that the war could extend for several months.
The report opens with a historical perspective: most interstate wars over the past 200 years have been relatively short, with half ending within five months. This forms the basis of JPMorgan’s baseline scenario. Statistical models, which factor in the significant military asymmetry between the U.S. and Israel on one side and Iran on the other, as well as the tendency of democracies to pursue decisive outcomes, suggest the conflict could last between 1.5 and 4.5 months.
In practical terms, this implies that the current conflict may already be midway through its course in an optimistic scenario, while in a more pessimistic case, more than 100 days of fighting could still lie ahead.
JPMorgan also points to the nature of military strategy as an indicator of duration. The U.S. and Israel are pursuing what it describes as a “maneuver” strategy, which historically leads to shorter conflicts. This contrasts with “attrition” or “punishment” strategies, such as guerrilla warfare, which tend to prolong wars for years.
However, the report identifies several factors that could significantly extend the conflict. These include a potential expansion of war objectives, particularly toward regime change in Iran, the involvement of additional countries or escalation by Iranian proxies such as Hezbollah and the Houthis, and a lack of trust between the parties that could hinder diplomatic resolution. Another risk is Iran shifting the conflict toward a prolonged war of attrition.
Economically, JPMorgan emphasizes that the longer the war continues, the deeper the disruption to daily activity. Extended mobilization of reservists, reliance on remote learning, and logistical constraints would weigh on productivity. At the same time, the report notes signs of what it describes as “operational resilience,” pointing to the gradual easing of restrictions by Israel’s Home Front Command from essential-only activity to partial economic activity.
External factors could also amplify the impact. While Israel is largely self-sufficient in natural gas, it remains exposed to global price shocks, particularly in oil and food. This risk would increase if disruptions affect key supply routes such as the Strait of Hormuz.
From a policy perspective, the report suggests that prolonged fighting would likely require further increases in defense spending. On monetary policy, the Bank of Israel is expected to remain cautious. The war is viewed as a negative supply shock that puts upward pressure on prices, while heightened uncertainty reduces the likelihood of near-term interest rate cuts.
