{ "title": "Climate Shocks, Debt Defaults and Investment in Climate Adaptation – Squaring an Impossible Trilemma", "publication": "IMF Working Papers, June 26, 2026", "sourceUrl": "https://www.imf.org/en/publications/wp/issues/2026/06/23/climate-shocks-debt-defaults-and-investment-in-climate-adaptation-squaring-an-impossible-577218", "canonical": "https://www.imf.org/en/publications/wp/issues/2026/06/23/climate-shocks-debt-defaults-and-investment-in-climate-adaptation-squaring-an-impossible-577218", "overlayPath": "/en/publications/wp/issues/2026/06/23/climate-shocks-debt-defaults-and-investment-in-climate-adaptation-squaring-an-impossible-577218/index.md", "summary": "Climate disasters tend to be associated with increased sovereign default risk. Countries face an “impossible trilemma”: scale up adaptation investment, keep debt sustainable amidst high borrowing costs and avoid the higher risk of default from delayed adaptation.", "sections": [ { "heading": "Overview", "content": "- Climate disasters are associated with increased sovereign default risk.\n- Countries face an “impossible trilemma”: scale up adaptation investment, keep debt sustainable amidst high borrowing costs, and avoid the higher risk of default from delayed adaptation.\n- Study uses a global panel of disaster event-level shocks to link disaster losses, adaptive capacity, concessional Official Development Assistance (ODA), and sovereign default probabilities.\n- Context: declining ODA increases the importance of well-designed support for climate adaptation policies." }, { "heading": "Key findings", "content": "- A 1pp increase in disaster related losses as a share of GDP raises the odds of sovereign default by approximately 2-3 percent.\n- An additional US$1 billion in cumulative Official Development Assistance (ODA) is associated with a 0.13 point gain in a country’s adaptive capacity.\n- The authors map concessional ODA finance to default probability using average marginal effects and predicted margins to produce a budgeting yardstick for calibrating needed ODA to sovereign default risk reduction targets." }, { "heading": "Quantitative results and metrics", "content": "- Disaster loss impact: \"1pp increase in disaster related losses as a share of GDP\" → increase in default odds of \"approximately 2-3 percent\".\n- Concessional ODA impact: \"An additional US$1 billion in cumulative Official Development Assistance (ODA)\" → \"0.13 point gain\" in adaptive capacity.\n- Publication specifics that appear in the source:\n - Pages: 27\n - Volume: 2026\n - Issue: 128\n - Series: Working Paper No. 2026/128\n - DOI: https://doi.org/10.5089/9798229051026.001\n - ISBN: 9798229051026\n - ISSN: 1018-5941" }, { "heading": "Policy implications and recommendations", "content": "- Prioritize well-designed concessional ODA for climate adaptation to reduce sovereign default risk.\n- Use the translated relationships between concessional ODA and default probability as a practical budgeting yardstick to calibrate ODA allocations against sovereign default risk reduction targets.\n- Recognize trade-offs inherent in the trilemma: scaling adaptation investment must be balanced with debt sustainability considerations and the timing of adaptation to avoid higher default risk." }, { "heading": "Methodological note", "content": "- Evidence is derived from a global panel of disaster event-level shocks.\n- The mapping of concessional ODA to default probability relies on average marginal effects and predicted margins to quantify finance-to-risk relationships.\n\nConstance de Soyres, Emmanuella Obeng, and Joanne Tan. June 26, 2026. \"Climate Shocks, Debt Defaults and Investment in Climate Adaptation – Squaring an Impossible Trilemma\", IMF Working Papers 2026, 128 (2026).\n\n---\n\n Content in this bundle\n\n- Working Paper\n - Working Paper (Markdown version){rel=\"alternate\" type=\"text/markdown\"}\n - Working Paper (PDF){rel=\"external\" type=\"application/pdf\"}\n\n---\n\nSource: https://www.imf.org/en/publications/wp/issues/2026/06/23/climate-shocks-debt-defaults-and-investment-in-climate-adaptation-squaring-an-impossible-577218" } ], "bullets": [ "[Markdown version](/en/publications/wp/issues/2026/06/23/climate-shocks-debt-defaults-and-investment-in-climate-adaptation-squaring-an-impossible-577218/index.md)", "[Structured JSON version](/en/publications/wp/issues/2026/06/23/climate-shocks-debt-defaults-and-investment-in-climate-adaptation-squaring-an-impossible-577218/index.json)", "[Bundle manifest](/en/publications/wp/issues/2026/06/23/climate-shocks-debt-defaults-and-investment-in-climate-adaptation-squaring-an-impossible-577218/bundle-manifest.json)", "Authors: Constance de Soyres, Emmanuella Obeng, Joanne Tan", "Published: June 26, 2026", "Series: IMF Working Papers", "DOI: https://doi.org/10.5089/9798229051026.001", "Climate disasters are associated with increased sovereign default risk.", "Countries face an “impossible trilemma”: scale up adaptation investment, keep debt sustainable amidst high borrowing costs, and avoid the higher risk of default from delayed adaptation.", "Study uses a global panel of disaster event-level shocks to link disaster losses, adaptive capacity, concessional Official Development Assistance (ODA), and sovereign default probabilities.", "Context: declining ODA increases the importance of well-designed support for climate adaptation policies.", "A 1pp increase in disaster related losses as a share of GDP raises the odds of sovereign default by approximately 2-3 percent.", "An additional US$1 billion in cumulative Official Development Assistance (ODA) is associated with a 0.13 point gain in a country’s adaptive capacity.", "The authors map concessional ODA finance to default probability using average marginal effects and predicted margins to produce a budgeting yardstick for calibrating needed ODA to sovereign default risk reduction targets.", "Disaster loss impact: \"1pp increase in disaster related losses as a share of GDP\" → increase in default odds of \"approximately 2-3 percent\".", "Concessional ODA impact: \"An additional US$1 billion in cumulative Official Development Assistance (ODA)\" → \"0.13 point gain\" in adaptive capacity.", "Publication specifics that appear in the source:", "Prioritize well-designed concessional ODA for climate adaptation to reduce sovereign default risk.", "Use the translated relationships between concessional ODA and default probability as a practical budgeting yardstick to calibrate ODA allocations against sovereign default risk reduction targets.", "Recognize trade-offs inherent in the trilemma: scaling adaptation investment must be balanced with debt sustainability considerations and the timing of adaptation to avoid higher default risk.", "Evidence is derived from a global panel of disaster event-level shocks.", "The mapping of concessional ODA to default probability relies on average marginal effects and predicted margins to quantify finance-to-risk relationships.", "**Working Paper**" ], "related": [ { "title": "Working Paper", "role": "paper", "sourceUrl": "https://www.imf.org/-/media/files/publications/wp/2026/english/wpiea2026128-source-pdf.pdf", "summary": { "path": "/-/media/files/publications/wp/2026/english/wpiea2026128-source-pdf.pdf.md", "mime": "text/markdown" }, "binary": { "path": "/-/media/files/publications/wp/2026/english/wpiea2026128-source-pdf.pdf", "mime": "application/pdf" } } ], "alternates": { "markdown": "/en/publications/wp/issues/2026/06/23/climate-shocks-debt-defaults-and-investment-in-climate-adaptation-squaring-an-impossible-577218/index.md", "json": "/en/publications/wp/issues/2026/06/23/climate-shocks-debt-defaults-and-investment-in-climate-adaptation-squaring-an-impossible-577218/index.json", "bundleManifest": "/en/publications/wp/issues/2026/06/23/climate-shocks-debt-defaults-and-investment-in-climate-adaptation-squaring-an-impossible-577218/bundle-manifest.json" }, "generatedAtUtc": "2026-09-17T03:36:36.542Z" }