How the IMF’s Climate Lending Tool Is Beginning to Unlock Global Climate Finance

The International Monetary Fund is experimenting with a new approach to climate finance, and early results suggest it could help vulnerable economies attract more funding for climate resilience. A recent study by IMF researchers Y. Diallo, P. Escalante, L. Kaltani, T. Kapan, F. Langowski and D. Nyberg from the IMF's Finance Department examines the early impact of the Resilience and Sustainability Facility (RSF), a lending programme launched in 2022. Their analysis indicates that the initiative is beginning to draw additional financing from international development partners, though attracting private investors remains a challenge.

The RSF is part of the IMF's broader Resilience and Sustainability Trust, established to help countries address long-term structural threats such as climate change and pandemics. Unlike traditional IMF programmes, which focus on stabilising economies during financial crises, the RSF supports reforms that improve long-term resilience. These reforms include strengthening climate-related fiscal planning, improving public investment management, and creating regulatory frameworks that encourage climate investment.

The Growing Climate Finance Gap

The initiative comes at a time when global demand for climate finance is rapidly rising. Over the past decade, investment in climate-related sectors such as renewable energy, clean transport and energy efficiency has grown significantly. Yet the funding required to meet climate goals still far exceeds the amount currently available.

Developing countries face the largest financing gaps. Many of these economies are highly exposed to climate risks such as floods, droughts and extreme weather events, but they often struggle to attract investment due to weak financial systems, regulatory uncertainty and limited project pipelines. Although private climate finance is increasing globally, most climate funding in developing economies still comes from public sources such as development banks and donor governments.

The IMF's RSF was designed to help address these challenges. By linking financing to structural reforms and climate policies, the programme aims to strengthen policy credibility and create an environment that attracts additional funding from international partners.

Early Signs of Catalytic Finance

Initial evidence suggests the facility is beginning to generate results. According to surveys of IMF country teams working on RSF programmes, participating countries received climate financing equivalent to roughly half a percent of GDP between 2023 and 2024. Most of this funding came from public institutions, particularly multilateral development banks and bilateral donors.

One reason for this increase appears to be improved coordination between governments and development partners. Several RSF countries have organised climate finance roundtables that bring together policymakers, international organisations, development banks and private sector representatives. These meetings help identify barriers to climate investment and develop pipelines of projects that could attract funding.

Countries that hosted such roundtables generally reported slightly higher levels of climate finance. The discussions often focus on turning climate priorities into bankable projects that investors are willing to support.

Barriers Still Holding Back Investment

Despite these encouraging signs, major obstacles remain. One of the biggest challenges highlighted in the research is the shortage of investable climate projects. Many countries have clear climate goals but lack the technical capacity to develop projects that meet investors' financial and regulatory requirements.

Other barriers include weak climate data systems, fragmented regulatory frameworks and limited institutional capacity. In addition, private investors often see developing economies as risky due to currency volatility, political uncertainty and unclear returns on investment.

These challenges are particularly severe in low-income countries and fragile states, where financial markets are less developed and government institutions may lack technical expertise. As a result, most climate financing linked to RSF programmes still comes from official sources rather than private investors.

What the Data Says So Far

To better understand the impact of the programme, researchers analysed financial flows across more than one hundred countries over the past two decades. Their statistical analysis suggests that countries with RSF arrangements tend to receive higher levels of climate finance from multilateral development banks compared with similar countries without such programmes.

The study also finds that low-income countries eligible for concessional IMF financing often experience increases in official development assistance after adopting RSF reforms. However, there is little evidence so far that the facility significantly increases private capital flows, such as foreign direct investment.

Researchers note that this outcome may reflect structural realities rather than weaknesses in the programme itself. Many RSF countries have limited access to international capital markets, and structural reforms often take years before they influence investor behaviour.

Building Momentum for Climate Investment

Overall, the study concludes that the RSF is beginning to fulfil its role as a catalyst for climate finance, particularly by mobilising funding from development banks and donor countries. While the programme has not yet succeeded in attracting large volumes of private investment, it appears to be strengthening policy frameworks and encouraging cooperation between governments and international partners.

As more countries implement RSF reforms and additional data becomes available, researchers expect a clearer picture of the programme's long-term impact to emerge. If successful, the facility could become an important tool in helping vulnerable economies secure the financing needed to adapt to climate change and build more resilient economic systems.