{
  "title": "Wars Impose Lasting Economic Costs, While More Defense Spending Means Hard Choices",
  "publication": "IMF Blog, April 8, 2026",
  "sourceUrl": "https://www.imf.org/en/blogs/articles/2026/04/08/wars-impose-lasting-economic-costs-while-more-defense-spending-means-hard-choices",
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  "summary": "Rising defense spending requires difficult fiscal choices to avoid raising vulnerabilities, while post-war recovery hinges on policies to reduce uncertainty, rebuild capital, and help displaced people return home",
  "sections": [
    {
      "heading": "Overview",
      "content": "- Wars and rising defense spending are reshaping policy priorities and macroeconomic outcomes globally.\n- Research summarized from two analytical chapters of the April 2026 World Economic Outlook: “Defense Spending: Macroeconomic Consequences and Trade-Offs,” and “The Macroeconomics of Conflicts and Recovery.”\n- Geographic focus and most-affected regions: sub-Saharan Africa, Europe, and the Middle East."
    },
    {
      "heading": "Economic losses (effects of conflicts)",
      "content": "- At conflict onset, output in countries where fighting takes place falls by about 3 percent and continues falling for years.\n- Cumulative output losses reach roughly 7 percent within five years.\n- Output losses from conflicts typically exceed those associated with financial crises or severe natural disasters.\n- Economic scars persist even a decade later.\n- Spillovers: neighboring economies or key trading partners often experience modest declines in output in the early years of a conflict.\n- Definition of major conflicts in the analysis: those involving at least 1,000 battle-related deaths.\n- Major-conflict dynamics:\n  - Government budgets deteriorate as spending shifts toward defense and debt increases.\n  - Output and tax collection collapse.\n  - Imports contract sharply because of lower demand; exports decrease even more substantially, producing a temporary widening of the trade deficit.\n  - Heightened uncertainty triggers capital outflows; both foreign direct investment and portfolio flows decline.\n  - Wartime governments rely more heavily on aid and, in some cases, remittances from citizens abroad to finance trade deficits.\n  - Sustained exchange rate depreciation, reserve losses, and rising inflation occur.\n  - Prices tend to increase at a pace higher than most central banks’ inflation targets, prompting monetary authorities to raise interest rates.\n- Overall conclusion: major conflicts impose substantial economic costs and difficult trade-offs on economies within their borders and hurt other countries, with enduring consequences for economic potential and human well-being."
    },
    {
      "heading": "Spending trade-offs (effects of rising defense spending)",
      "content": "- Episodes studied: large buildups in defense spending in 164 countries since the Second World War.\n- Typical characteristics of defense spending booms:\n  - Duration: typically last nearly three years.\n  - Size: increase defense spending by 2.7 percentage points of gross domestic product.\n  - Comparable benchmark: “broadly similar to what is required by North Atlantic Treaty Organization (NATO) members to reach the 5 percent of GDP defense spending target by 2035.”\n- Aggregate macro effects:\n  - Ramping up defense spending primarily acts as a positive demand shock, boosting private consumption and investment, especially in defense-related sectors.\n  - Short-term raises in both economic output and prices; requires close coordination with monetary policy to temper inflationary pressures.\n  - Aggregate effects on output are likely modest: increases in defense spending typically translate almost one for one into higher economic output.\n  - Multipliers vary widely depending on how outlays are sustained, financed, allocated, and how much equipment is imported.\n- Specific trade-offs and channels:\n  - Output gains are smaller and external balances deteriorate when stimulus is partly spent on imported goods (especially for arms importers).\n  - Buildups that prioritize public investment in equipment and infrastructure, less fragmented procurement, and more common standards can:\n    - expand market size,\n    - support economies of scale,\n    - strengthen industrial capacity,\n    - limit import leakages,\n    - support long-term productivity growth.\n- Financing choices and fiscal consequences:\n  - Defense spending booms are mostly deficit-financed in the near-term; higher revenues play a larger role in later years and when the buildup is expected permanent.\n  - Near-term deficit financing can stimulate the economy but strain fiscal sustainability over the medium term.\n  - Empirical fiscal impacts:\n    - Deficits worsen by about 2.6 percentage points of GDP within three years of the start of a boom.\n    - Public debt increases by about 7 percentage points within three years of the start of a boom (14 percentage points in wartime).\n  - Higher public debt can crowd out private investment and offset initial expansionary effects.\n  - Mitigation options:\n    - Durable financing arrangements when the increase is permanent.\n    - Raising revenues (cost: reducing consumption and dampening demand boost).\n    - Re-ordering budget priorities (cost: reductions in spending on social protection, health, and education)."
    },
    {
      "heading": "Policies for recovery (post-conflict recovery and policy recommendations)",
      "content": "- Recovery speed and pattern:\n  - Recoveries are often slow and uneven and crucially depend on the durability of peace.\n  - When peace is sustained, output rebounds but often remains modest relative to wartime losses.\n  - In fragile economies with renewed conflict, recoveries frequently stall.\n  - Recovery driven primarily by labor (reallocation from military to civilian activities and gradual return of refugees); capital stock and productivity remain subdued.\n- Key policy measures to restore confidence and promote recovery:\n  - Early macroeconomic stabilization.\n  - Decisive debt restructuring.\n  - International support, including aid and capacity development.\n  - Domestic reforms to rebuild institutions and state capacity, promote inclusion and security, and address lasting human costs (lost learning, poorer health, diminished economic opportunities).\n- Policy design principles:\n  - Comprehensive and well-coordinated policy packages are far more effective than piecemeal measures.\n  - Policies that simultaneously reduce uncertainty and rebuild the capital stock can:\n    - reinforce expectations,\n    - encourage capital inflows,\n    - facilitate the return of displaced people.\n- Ultimate objective: successful post-war recovery should lay the foundation for stability, renewed hope, and improved livelihoods for communities affected by conflict.\n\nSource: Hippolyte Balima, Andresa Lagerborg, Evgenia Weaver; April 8, 2026.\n\n---\n\n Content in this bundle\n\n- Chapter 2\n  - Chapter 2 (Markdown version){rel=\"alternate\" type=\"text/markdown\"}\n  - Chapter 2 (PDF){rel=\"external\" type=\"application/pdf\"}\n- Chapter 3\n  - Chapter 3 (Markdown version){rel=\"alternate\" type=\"text/markdown\"}\n  - Chapter 3 (PDF){rel=\"external\" type=\"application/pdf\"}\n\n---\n\n References\n\n- World Economic Outlook\n- How Fragile States Can Gain by Strengthening Institutions and Core Capacities\n\nSource: https://www.imf.org/en/blogs/articles/2026/04/08/wars-impose-lasting-economic-costs-while-more-defense-spending-means-hard-choices"
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    "Authors: Hippolyte Balima, Andresa Lagerborg, Evgenia Weaver",
    "Published: April 8, 2026",
    "Wars and rising defense spending are reshaping policy priorities and macroeconomic outcomes globally.",
    "Research summarized from two analytical chapters of the April 2026 World Economic Outlook: “Defense Spending: Macroeconomic Consequences and Trade-Offs,” and “The Macroeconomics of Conflicts and Recovery.”",
    "Geographic focus and most-affected regions: sub-Saharan Africa, Europe, and the Middle East.",
    "At conflict onset, output in countries where fighting takes place falls by about 3 percent and continues falling for years.",
    "Cumulative output losses reach roughly 7 percent within five years.",
    "Output losses from conflicts typically exceed those associated with financial crises or severe natural disasters.",
    "Economic scars persist even a decade later.",
    "Spillovers: neighboring economies or key trading partners often experience modest declines in output in the early years of a conflict.",
    "Definition of major conflicts in the analysis: those involving at least 1,000 battle-related deaths.",
    "Major-conflict dynamics:",
    "Overall conclusion: major conflicts impose substantial economic costs and difficult trade-offs on economies within their borders and hurt other countries, with enduring consequences for economic potential and human well-being.",
    "Episodes studied: large buildups in defense spending in 164 countries since the Second World War.",
    "Typical characteristics of defense spending booms:",
    "Aggregate macro effects:",
    "Specific trade-offs and channels:",
    "Financing choices and fiscal consequences:",
    "Recovery speed and pattern:",
    "Key policy measures to restore confidence and promote recovery:",
    "Policy design principles:",
    "Ultimate objective: successful post-war recovery should lay the foundation for stability, renewed hope, and improved livelihoods for communities affected by conflict.",
    "**Chapter 2**",
    "**Chapter 3**",
    "[World Economic Outlook](https://www.imf.org/en/publications/weo/issues/2026/04/14/world-economic-outlook-april-2026)",
    "[How Fragile States Can Gain by Strengthening Institutions and Core Capacities](https://www.imf.org/en/blogs/articles/2026/03/18/how-fragile-states-can-gain-by-strengthening-institutions-and-core-capacities)"
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