Climate change and sovereign debt are no longer separate crises. For the Global South, they have fused into a single, self-reinforcing trap - and the architecture of global finance is holding the lock.

In 2023, low- and middle-income countries spent $970 billion repaying external creditors. That same year, the world’s leading economists agreed that the Global South needs roughly $1 trillion annually to fund climate adaptation and resilience. The near-perfect overlap of these two figures is not a coincidence - it is the arithmetic of a system designed, however unintentionally, to fail the world’s most vulnerable nations.

The doom loop, defined

The “climate-sovereign debt doom loop”, also known as the climate-public debt vicious cycle, is the mechanism by which climate change and debt levels mutually intensify one another. It operates in four interlocking stages. First, climate shocks such as droughts, floods, hurricanes, etc., force governments to borrow heavily for disaster recovery, expanding their debt burden. Second, credit rating agencies respond by downgrading climate-vulnerable countries, as has already happened to Namibia, Pakistan, and Sint Maarten, raising borrowing costs through what economists call a “climate risk premium.” Third, the debt servicing costs crowd out any remaining fiscal space for investment in climate adaptation. And fourth, the global financial architecture cements the trap: the IMF conditions emergency support on fiscal surplus requirements, forcing governments to cut the very climate and social programs that would reduce their vulnerability to the next shock.

The cruellest irony is procedural. These nations carry minimal historical responsibility for the greenhouse gas emissions driving the crisis. Yet they bear its sharpest consequences, and are penalised by financial markets for precisely that vulnerability.

Three channels of injustice

Climate finance and policy, as currently structured, exacerbate this injustice through three distinct channels:

Exposing by Self-protecting - Global North banks sell off bonds from climate-vulnerable nations to limit their own risk, driving down prices and raising borrowing costs for governments least able to afford it.

Decarbonising by Exploiting - The green transition’s demand for lithium, cobalt, and copper fuels “green extractivism”, mineral extraction that destroys ecosystems and displaces indigenous communities across the Global South.

Climate Derisking - Public authorities in developing nations spend scarce fiscal resources subsidising private investors from the Global North, socialising risk while privatising profit.

This third channel, often called the “Wall Street Consensus,” is especially telling. Rather than providing direct public funding for climate action, international institutions push developing governments to offer tax incentives, payment guarantees, and cheap financing to attract private capital. The public assumes the risk; the profit flows north.

The structural deadlock

Underlying all of this is a global financial architecture built to serve a different world. Multilateral Development Banks, the closest thing to a source of stable, low-interest “good debt”, disburse roughly $200 billion annually, far short of the $1 trillion required. Unlike the “legacy debt” that burdens most developing nations - speculative, short-term, high-interest - the world needs debt that is productive, long-maturity, and priced below economic growth rates. That debt is almost entirely unavailable to the Global South.

There is also no international bankruptcy framework. When countries cannot pay, they enter years of politically fraught negotiations (for example, Ghana’s restructuring became a cautionary emblem) during which creditors stop lending, and economies stall. The IMF steps in, but typically demands fiscal surpluses: spending cuts that slash the climate and social programs the country most needs. It is a system that has internalised austerity as medicine, regardless of the disease.

Meanwhile, in Africa, the amount required for climate investment is approximately equal to the amount being repaid to external creditors each year. Countries are not treading water, they are sinking while being told to swim faster.

A billion-dollar contradiction: India’s climate finance gap

India occupies a peculiar and revealing position in the global climate finance story. It is, simultaneously, one of the world’s fastest-growing renewable energy markets, having surpassed 50% of installed power capacity from non-fossil sources ahead of its 2030 NDC target, and a country whose development model continues to exact a serious ecological toll. The contradiction is not incidental; it is structural, and it illuminates many of the tensions this article has described at the global level.

$54B required annually (1.3% of GDP) 4-6% of GDP lost annually to heat stress alone

The scale of what is needed is staggering. Decarbonising just four key sectors, power, road transport, steel, and cement, will require an estimated $467 billion between 2022 and 2030. Steel and cement alone account for more than 80% of that requirement, and both

depend heavily on carbon capture and storage technology that is expensive and not yet available at scale in India. Yet India’s Economic Survey 2025-26 acknowledged plainly that the current levels of international climate finance “fall short of the requirements,” and that domestic actors account for nearly 80% of total climate finance flows: meaning India has largely been financing its own transition, without meaningful global support, while continuing to push for equity and burden-sharing at every COP.

The domestic financing gap has a second, less-acknowledged dimension: the ecological cost of the development path used to generate that growth in the first place. Between 2008 and 2019, over 253,000 hectares of forest were cleared for non-forestry purposes, an average of 46,000 hectares per year, driven by coal mining, industrial townships, highway corridors, railway lines, and power infrastructure. States like Jharkhand and Uttar Pradesh, rich in mineral wealth, have seen their highest-ever rates of forest diversion in recent years. The problem is compounded by how the government counts its forest cover: plantations, orchards, and urban parks are included in official figures, obscuring the loss of mature, biodiverse woodland to mining and industry. Large-scale renewable energy projects, often touted as climate solutions, are not exempt either. The Climate Change Performance Index 2026 found that grid-scale renewable siting in India has triggered land conflicts, displacement, and water stress, reflecting “top-down, non-inclusive” planning that mirrors the green extractivism pattern.

Pathways to a Just Transition

Breaking the doom loop requires more than incremental reform. It demands a transformation of the system’s underlying logic, away from derisking for private profit and toward compensatory justice for historical climate debt.

I. A Climate Justice Facility (CJF), funded by money creation from Global North central banks, would provide perpetual, zero-interest loans with no maturity date. Crucially, this would function not as new debt but as repayment of the North’s historical climate debt, with a procedural justice requirement that local communities lead decision-making.

II. A formal international bankruptcy framework, akin to corporate insolvency law, would allow countries to restructure fairly and quickly, ending the years of economic paralysis that current negotiations impose. A Borrowers’ Forum would give indebted nations collective bargaining power.

III. Tripling MDB lending capacity and reforming the IMF’s Debt Sustainability Analysis to incorporate forward-looking climate scenarios: eliminating the procyclical conditionalities that currently force spending cuts during precisely the moments when public investment is most needed.

IV. Green justice conditionalities must be introduced into all climate-linked lending, ensuring that no “green” loan or subsidy supports companies engaged in extractivism, land grabbing, or human rights violations. The transition cannot be laundered through injustice.

V. Differentiated responsibilities must govern the system’s design. Global North central banks should deploy mitigation tools; Global South institutions should be empowered to prioritise adaptation. RMB refinancing, converting high-interest legacy loans into renminbi at rates as low as 1.5%, offers one immediate mechanism for debt relief without waiting for systemic overhaul.

The political case for these reforms need not rest on altruism alone. Supporting the Global South reduces the regional instability that drives climate migration. The capital created through a Climate Justice Facility would, in large part, return to the Global North as developing nations purchase the machinery and technology needed to build resilient infrastructure. Global stability and export returns are arguments that can be made to domestic audiences in creditor nations.

India too, needs a fundamental reorientation of how its climate transition is financed and governed. Four priorities are clear. First, India must push with greater force in multilateral forums for the concessional, long-term climate finance it is owed: the gap between the $1.3 trillion annually that the G-77 bloc demanded at COP29 and what developed nations have committed is not an abstraction; it is the gap between India self-funding its transition and receiving the support commensurate with its low historical emissions. Second, environmental and social conditionalities must be built into domestic climate spending; renewable energy projects that displace communities or destroy ecosystems cannot be legitimised simply by the energy they generate. Third, India’s forest accounting methodology must be reformed so that industrial deforestation is no longer masked by plantation cover, both for credibility in climate diplomacy and for honest policymaking at home. Finally, the transition must be designed with, not merely for, the communities, tribal, rural, forest-dependent, who live at the intersection of industrial extraction and climate vulnerability. India cannot replicate, at home, the same logic of “decarbonising by exploiting” that it rightly criticises when practised by the Global North.

Behind the political and economic framing, lies a simpler moral reality. The countries most exposed to climate breakdown are those that contributed least to creating it. They are being asked to pay twice: once with their ecosystems and once with their fiscal futures. A financial system that calls itself global must eventually reckon with that fact.  / DAILY WORLD /

( The writer is a researcher interested in topics including climate governance, geopolitics, history and society. Views expressed are her personal. )