Unpacking the barriers to sustainable development (SDGs) in low- and middle-income countries—from debt and data gaps to politics and a flawed global goal-setting machine.

The biggest barriers to sustainable development in low- and middle-income countries are not a lack of plans, but a mix of debt, underfunding, political constraints, data gaps, and a contested Sustainable Development Goals framework. This article examines why the SDGs are off track, what supporters say they have achieved, and why critics argue the model itself needs a reset.

The phrase “barriers to sustainable development in low- and middle-income countries” sounds clinical—like a puzzle for technocrats. On the ground, it looks very different. It looks like a finance minister in Accra deciding whether to service foreign debt or pay teachers. It looks like a nurse in Dhaka reusing gloves because the clinic’s budget is frozen. It looks like a farmer in Honduras watching a hillside washed away by a storm more violent than any in his parents’ lifetime.

All of them live in countries that signed on to the United Nations’ 17 Sustainable Development Goals (SDGs), a sweeping global agenda adopted in 2015 and meant to be achieved by 2030. None of them are on track.

A scoreboard nobody wants to read

The latest SDG progress assessments make for grim reading. The UN’s Sustainable Development Goals Report 2024 finds that, of the targets where trend data exist, only about 17 percent are on track to be achieved by 2030, while progress has stalled or reversed on many others. A companion analysis from the Sustainable Development Solutions Network puts the figure at roughly 16 percent of targets on track, with progress flatlining globally since 2020 and especially severe backsliding on hunger, biodiversity, cities and governance.

Low- and middle-income countries have been hit hardest. The COVID-19 pandemic erased years of gains in poverty reduction, learning, and health. Climate shocks—droughts, floods, cyclones—have wiped out infrastructure and livelihoods in places that did almost nothing to cause global warming. And a tightening global financial environment has choked off affordable credit.

A draft of the SDG report for 2025 underscores the squeeze: debt servicing in low- and middle-income countries reached a record $1.4 trillion, draining budgets that might otherwise fund schools, hospitals, or clean energy.

Against this backdrop, the idea that the world will somehow sprint the last mile by 2030 feels less like optimism and more like denial.

Barrier 1: Money that never really showed up

From the start, the SDGs were ambitious: 169 targets across 17 goals, from ending extreme poverty to protecting oceans. They were also expensive.

UN and World Bank estimates have long suggested that achieving the SDGs requires trillions of dollars each year in additional investment—particularly in infrastructure, health, and education in low- and middle-income countries. Yet the promises made in 2015 have been chronically underfunded. A 2024 UN Financing for Sustainable Development report describes the world as “at a crossroads,” calling for urgent action to close massive SDG and climate investment gaps, reform international institutions, and restore trust.

The core problem is simple: many developing countries are too indebted and too constrained to borrow cheaply or spend freely. Developing countries’ combined external sovereign debt reached $11.4 trillion in 2023, with annual debt service costs soaring to about $1.7 trillion—up 110 percent in a decade, according to an analysis by the Islamic Development Bank Institute.

In practice, this means governments in dozens of low- and middle-income countries now spend more on interest payments than on health, education, or social protection. Every dollar wired to creditors is a dollar not spent on SDG-linked investments.

Supporters of the SDG agenda point out that there has been progress. Multilateral development banks collectively provided a record $137 billion in climate finance in 2024, a 10 percent increase over the previous year, with $85.1 billion directed to low- and middle-income countries and climate finance to the poorest nations more than doubling over five years. Development financiers emphasize that such flows are increasingly aligned with SDG priorities—renewable energy, resilient infrastructure, climate-smart agriculture.

Critics counter that these numbers, while significant, are nowhere near the scale of need—especially when set against the trillions leaving the Global South in debt service, illicit financial flows, and profit repatriation. For them, the SDGs are like a building plan drawn up without checking whether there is enough money to buy bricks.

Barrier 2: A global financial system tilted against the South

Even when money is available, it rarely comes on fair terms.

A growing chorus of UN agencies, economists and Southern leaders argues that the international financial system itself is a major barrier to sustainable development in low- and middle-income countries. UNCTAD’s 2025 call to “reform global finance for climate-resilient development” warns that years of under-delivery, over-reliance on debt, and eroding trust are undermining both SDG progress and climate action.

Low- and middle-income countries often pay far higher interest rates than rich countries borrowing in the same currency. Climate risks—drought, sea-level rise, storms—push those premiums even higher, as investors demand compensation for perceived danger. As a result, countries most in need of investing in resilience face the highest cost of capital, a paradox highlighted by recent analyses from the International Institute for Sustainable Development and others.

The politics of debt are shifting, too. A recent study by Boston University’s Global Development Policy Center found that developing nations now pay about $3.9 billion more per year to China in net debt service than they receive in new Chinese loans, a reversal from earlier years when Chinese credit fueled hundreds of infrastructure projects.

Supporters of SDG-aligned finance argue that reform is underway: the G20 has backed measures to revamp multilateral development banks, experiments with debt-for-climate swaps are emerging, and new “loss and damage” funds have been created in UN climate talks.

Critics dismiss these steps as incremental tweaks to a structurally unfair system. They argue that without deeper changes—automatic debt standstills after climate disasters, large-scale debt cancellation, and more power for low- and middle-income countries in financial governance—SDG talk about “partnership” rings hollow.

Barrier 3: Politics, governance and conflict at home

Not all obstacles are external. Inside many low- and middle-income countries, political realities collide head-on with SDG aspirations.

Weak institutions, corruption, and elite capture mean that even when funds arrive, they do not always reach the communities most in need. World Bank and OECD assessments quietly acknowledge that leakages in public spending, fragile rule of law, and conflict severely blunt the impact of development finance.

In fragile states—from the Sahel to parts of the Middle East—basic security remains elusive. Sustainable Development Goal 16, which focuses on peace, justice, and strong institutions, is among the most off track globally. When armed groups control territory, government presence is weak, or political settlements are fragile, long-term investments in education, health, and climate adaptation are extraordinarily difficult to sustain.

Supporters of the SDGs say this is exactly why the agenda matters: it links peace, governance, gender equality, climate, and economic growth in a single framework, encouraging donors and governments to think holistically rather than treating each issue in isolation.

Critics are less charitable. For them, SDGs can function as a glossy distraction from hard political choices. They argue that global goals have been used to rebrand “business as usual” development models without challenging domestic elites, authoritarian tendencies, or the human-rights abuses that often sit at the root of underdevelopment.

Barrier 4: Data gaps and measurement illusions

It is hard to fix what you cannot see—and in many low- and middle-income countries, policymakers are still flying partly blind.

The UN’s 2024 SDG data update acknowledges that 34 of the 169 targets lack sufficient trend data to assess global progress, and notes serious data gaps in many low- and lower-middle-income countries. Civil registries are incomplete. Household surveys are infrequent. Environmental monitoring systems are patchy or outdated.

In theory, the SDGs were supposed to usher in a new era of “data for development”: satellite imagery to track deforestation, digital platforms for real-time poverty mapping, and so on. In practice, the “data revolution” has arrived unevenly.

Supporters stress that SDG reporting has improved transparency and spurred investments in national statistics offices, open-data portals, and new forms of measurement. Initiatives from the UN and World Bank have indeed helped some countries modernize their data systems, making it easier to target policies and track impact.

Critics warn of a different risk: measurement fetishism. They argue that chasing ever more indicators can distract from substance, and that data produced for global dashboards may not answer the questions local communities actually have. Some scholars in the Global South complain that international organizations often set the metrics, define what counts as “progress,” and then grade countries using their own yardsticks—reinforcing a hierarchy of knowledge and power.

Barrier 5: A blueprint some say was flawed from the start

Beyond money, governance, and data lies a more uncomfortable question: was the SDG model itself realistic?

A growing body of commentary—particularly from African and European analysts—suggests that the SDGs were overdesigned and underpowered. The Africa Report has summarized “10 criticisms” of the SDGs: they are non-binding, vastly underfunded, too vague, too numerous, and often driven by donor priorities rather than local agendas.

Think tanks like the Heritage Foundation have attacked the SDGs from another angle, calling them riddled with imprecise language (“substantially reduce corruption”) and impossible to measure consistently. Academic critics go further: a 2025 paper in International Development Planning Review argues that the SDGs have been “co-opted and devalued,” ushering in a new development orthodoxy that is rhetorically transformative but substantively aligned with existing power structures.

Their shared charge is that:

• The goals are too broad to guide tough trade-offs.
• The lack of legal obligation means there is no real enforcement.
• The language of “transformations” and “partnership” masks the deeper political and economic conflicts that drive unsustainable development.

Supporters of the SDGs respond that these criticisms miss the point. The goals, they say, were never meant to be a legally binding blueprint, but a shared compass—a way to align governments, cities, companies, and civil society around a common vision. They note that no previous development agenda has generated similar levels of public awareness, corporate commitments, city-level plans, and cross-border coalitions.

In their view, the SDGs’ greatest achievement has been normative: making it politically costly for any government or institution to openly argue against ending extreme poverty or protecting the planet.

Critics concede that this normative shift matters. But they insist that a compass without a credible route and fuel is not enough—especially for countries that started the journey burdened with debt, historical disadvantage, and climate vulnerability.

What would it take to move from goals to grounded change?

If the barriers to sustainable development in low- and middle-income countries are this entrenched, is the SDG project doomed? Not necessarily—but it will require a more honest conversation about power and trade-offs.

Several priorities are emerging from within the Global South and from reform-minded voices in international institutions:

1. Fix the money at scale, not at the margins
   Reforming the global financial system is no longer a slogan; it is a prerequisite. That means:
   • large-scale debt relief and disaster clauses that pause payments after climate shocks
   • massively expanding concessional finance and climate grants, not just loans
   • re-capitalizing and reforming multilateral development banks so they can lend more, with better terms, for SDG priorities.
2. Put politics back at the center of “sustainable development”
   Development is not a technocratic exercise; it is about who exercises power, whose interests are served, and who gets a voice. That means being frank about corruption, repression, and elite capture in some low- and middle-income countries—and about unfair trade rules, tax havens, and geopolitical double standards in the rich world.
3. Let countries lead on their own pathways
   Instead of treating the SDGs as a checklist imported from New York, many analysts argue for country-owned development pathways that reflect local priorities and constraints, while still aligned with global climate and equity goals. That includes giving far more weight to regional bodies, local researchers, and communities in defining what “success” looks like.
4. Invest in people, not just projects
   Roads and solar parks matter. But without investments in teachers, nurses, social workers, local entrepreneurs and statisticians—the people who make systems work—SDG infrastructure can become yet another brittle monument.

2030 is tomorrow in development time

The SDGs were born in a moment of cautious optimism, when it still seemed possible that globalization could be made gentler and greener through better metrics, more partnerships, and a set of shared goals pinned to a UN wall.

Ten years later, the world is more fractured, the planet is hotter, and low- and middle-income countries are carrying heavier debt loads and deeper climate scars than when the project began. The scoreboard shows how far the world is off track. The lived realities in Accra, Dhaka, Tegucigalpa or Harare show what that failure looks like.

Supporters say it is precisely now—when cynicism is easy—that the SDGs are most needed as a north star. Critics warn that clinging to an underfunded, technocratic agenda risks becoming an alibi for inaction.

Both can be true. Global goals can still provide direction. But unless the world confronts the hard economics and hard politics that stand between slogans and reality, “sustainable development” will remain a phrase recited in conference halls while, outside, the gap between promise and life keeps widening.