Complete Commentary on the IMF World Economic Outlook 2026 — How War Ruins Growth

The IMF has attached an unusual subtitle to its April 2026 World Economic Outlook (WEO): “Global Economy in the Shadow of War.” The tone is heavier than when the OECD warned a month ago that “growth opportunities have been completely offset.” This IMF report is not merely a collection of growth rate figures. It is a substantial report that analyzes, using 80 years of data, how war devastates the economy, how increased defense spending changes livelihoods, and why recovery remains so slow even after the war ends. While the sheer volume of numbers may make it seem difficult, I will summarize and explain only the essential points that investors need to know.

1OECD Next is the IMF — Two institutions said the same thing with different weight.

When the OECD released its emergency report last month, the key sentence was: “The growth opportunity to raise it to 3.2% has been entirely erased.” If you read that post ( Analysis of the OECD Report → ), the conclusion of this IMF report will not be unfamiliar. The direction is the same. However, the IMF has come forward with much more substantial evidence.

The IMF's reference forecast projects a global growth rate of 3.1% in 2026 , assuming the war ends in a relatively short period. Since 3.4% was possible before the war, this represents a downward revision of 0.3 percentage points . However, the important point is that this figure is based on an 'optimistic scenario.' If the war drags on, the situation changes.

Placing the perspectives of the two institutions side by side reveals the structure. The OECD focused on the “immediate shock,” while the IMF analyzed “how the shock will persist and through what channels.” This is precisely why the IMF report is more useful for investors.

2 Three Pathways of Intensifying Shocks — Energy, Supply Chains, and Finance

The IMF analyzed three pathways for the transmission of the war's economic shock. The first is rising energy prices, the second is supply chain disruptions, and the third is financial market tightening due to risk-off sentiment.

Let's look at the energy sector first. Qatar's Ras Laffan complex is the core site of this shock. It is significant enough that IMF Managing Director Kristalina Georgieva mentioned it personally. This complex produces approximately 93% of the Gulf's LNG, with over 80% of that exported to the Asia-Pacific region. This structure means South Korea, Japan, and Taiwan will bear the brunt of the direct impact. Oil prices are projected to reach $82 per barrel under the baseline, $100 under the aggravated scenario, and as high as $110 under the severe scenario. The impact on natural gas could be even greater than that on oil prices, due to the technical complexity of restarting operations and the relatively small reserves.

Supply chain shocks are manifesting in both shipping and aviation. The IMF has stated that maritime and air traffic in the Strait of Hormuz and surrounding waters is being severely disrupted. A particular problem is that food prices are rising as well. When energy prices rise, fertilizer costs increase, and when transportation costs rise, food prices follow suit. Inflation is not simply a matter of oil prices.

What about the financial markets? The IMF assessed that financial market volatility to date remains “accommodative from a historical perspective.” This means there is risk-off sentiment, but not at the level of a panic. However, emerging economies, particularly those that are energy importers with weak currencies, are taking a much harder hit. If a strong dollar and rising oil prices occur simultaneously, energy costs in domestic currencies could more than double.

3 What Happens If the War Is Prolonged — A Complete Explanation of the 3 IMF Scenarios

In this report, the IMF presented three unprecedented scenarios side by side. The fate of the global economy will change completely depending on “when it ends.” We explain this in a way that even beginners can understand.

The numbers in the severe scenario are chilling. Oil prices surge by 100% , and gas prices for Europe and Asia rise by 200% . Food prices are assumed to increase by an additional 5% in 2026 and 10% in 2027. Inflation expectations jump by up to 100 basis points in developed countries and up to 130 basis points in emerging markets. Readers who remember the oil shock of the 1970s will likely get the picture.

No one can guarantee which scenario the current situation is closest to. Even the IMF itself has firmly stated that “even the most optimistic scenario entails a downward trend in growth.”

4Will Increasing Defense Spending Improve the Economy? — IMF Chapter 2 Complete Explanation

The answer to the question of whether increasing defense spending is good or bad for the economy is that it is “slightly good in the short term and quite bad in the medium term.” This is the conclusion reached by the IMF after analyzing data from 164 countries since 1946. Knowing this gives a different perspective on the current debate surrounding South Korea’s defense budget.

According to the IMF, in a typical defense spending boom, defense expenditures increase by an average of 2.7 percentage points of GDP and last for an average of over 2.5 years . Approximately two-thirds of this additional spending is funded by an expansion of the fiscal deficit . In other words, instead of collecting more taxes or cutting other expenditures, the government simply takes on debt.

In the short term, there is clearly an economic stimulus effect. Orders for defense-related companies increase, soldiers' salaries lead to consumption, and the production of military equipment boosts manufacturing capacity utilization. The IMF estimates that the defense spending multiplier is approximately 1 on average. This means that spending 1 trillion won increases GDP by about 1 trillion won.

However, the medium term is the problem. As debt accumulates, it crowds out private investment. When the government raises funds by selling government bonds, interest rates rise, making it difficult for companies to borrow money for investment. A more serious issue is that welfare spending is cut . With the total fiscal pie fixed, it is a matter of arithmetic that increasing defense spending leads to reductions in education, healthcare, and the social safety net. This effect is even more pronounced in a wartime situation.

This analysis is particularly important given that NATO has set a defense spending target of 5% of GDP by 2035. South Korea is no exception. The economic impact varies completely depending on how defense spending is utilized (weapons imports vs. domestic R&D) and how it is financed (tax increases vs. deficit financing).

5Why Does the Economy Recover Slowly Even After a War Ends?

The core message of Chapter 3 of the IMF is this: “The damage from war is greater than that of financial crises or natural disasters, and recovery is much slower.” To reach this conclusion, they conducted a comprehensive analysis of global conflict data since World War II.

The average GDP of a war-affected country suffers a cumulative 7% loss over the five years following the start of the conflict. This loss is greater than that of a financial crisis or a major natural disaster. Moreover, in many cases, it does not fully recover even after ten years. Why is this the case? It is because capital (factories, roads, and schools) is destroyed, skilled workers die or evacuate, and institutions and the legal order collapse. These things cannot be restored quickly simply by having money.

The recovery, however minimal, is primarily due to the return of the workforce . GDP rebounds as refugees return and the unemployed find employment. On the other hand, capital accumulation and productivity remain sluggish for a long time. This is because it takes time for companies to gain confidence in whether they should invest in this country again.

The most decisive factor determining the speed of recovery is the sustainability of peace . If war ends only to resurface, an economy that was just beginning to recover collapses again. According to IMF data, the recovery trajectories differ completely between cases where "peace lasts for more than five years" and cases where "war resurfaces within five years." The former recovers, albeit gradually, while the latter barely recovers.

6What Korean Investors Should Pay Attention To

What position does Korea stand in amidst this shock? As analyzed in the OECD report at the time, Korea has a high dependence on energy imports, a large manufacturing sector, and an export-oriented economy. According to the IMF's analytical framework, it falls into the category of a typical "vulnerable energy importing country."

However, it is worth noting that the IMF maintained Korea's growth rate at 1.9% . Why did it not decrease, given the clear adverse effects of the war? The IMF's assessment is that this was due to the government's compilation of a supplementary budget . It implies that the government actively released fiscal funds to offset the growth shock caused by the war. This means that fiscal policy played a significant buffering role, and as long as this structure is maintained, the picture emerges that the Korean economy is holding up relatively well compared to other major energy importing countries.

However, they are not merely playing the role of victims. The IMF has explicitly stated that exports of semiconductor and AI-related technologies are a key driving force supporting the Asian economy. The structure in which South Korean companies SK Hynix and Samsung Electronics benefit from increased demand for HBMs remains intact. Defense exports are also a variable to watch. If NATO’s 5% defense spending target is realized, global demand for weapons will explode, and South Korean defense companies that have already built a track record of exports could benefit.

8 Low growth does not necessarily mean stock prices will fall.

Many people get confused at this point. Since the IMF has lowered its growth forecast, shouldn't we sell our stocks now? The real economy and the capital market move differently. Historically, there are many instances where stock prices rose even in years of low GDP growth. Conversely, there are also cases where stock prices fell when the growth rate was high.

As a war drags on, an interesting phenomenon emerges in the market. Initially, there is a sharp decline driven by fear, but as the conflict drags on, the market becomes accustomed to that fear. Known risks are priced in, and barring a new shock, the momentum for further declines diminishes. Furthermore, if governments supply liquidity to stimulate the economy, the capital market can react in a different direction, even if the real economy remains weak.

9Frequently Asked Questions

Conclusion — The “shadow of war” lingers longer than expected.

The latest IMF report can be summarized in a single line: Wars start quickly, but their economic wounds heal slowly. Even if the war ends quickly as predicted by the baseline, global growth rates will decline, energy prices will rise, and national finances will deteriorate. If the severe scenario becomes reality, a phase of structural stagflation similar to that of the 1970s could emerge.

The IMF paints a bleaker picture than when the OECD stated a month ago that “opportunities have vanished.” However, there is no need to be unconditionally pessimistic. As emphasized by the IMF Managing Director, the attitude of “learn to think of the unthinkable and then stay calm, adapt” applies equally to investors.

The market is currently reflecting the baseline scenario to some extent. There are two things to check in your portfolio. One is to review positions vulnerable to rising energy costs, and the other is to maintain an appropriate weighting in sectors that are relatively safe or benefit from a prolonged war scenario (defense, energy efficiency, dollar assets).

Date: 2026.04.14 · Davar · Global Market Analysis & Investment Strategy 🌍
⚠ This article is for informational purposes only and is not an investment recommendation; investment decisions and responsibilities lie solely with the individual.
Reference materials: IMF World Economic Outlook April 2026 (Chapter 1, 2, 3) · IMF Spring Meetings 2026 Curtain Raiser (Georgieva, 2026.04.09) · OECD Interim Economic Outlook March 2026 · IMF WEO Update January 2026