Nature risks could increase borrowing costs for countries

Biodiversity loss pushes up government debt costs across 53 countries

Countries experiencing higher levels of nature degradation now pay substantially more when they borrow money, according to research from the London School of Economics. The study found that biodiversity loss adds between 40 and 75 basis points to sovereign borrowing costs, depending on bond maturity. For context, that translates to an extra £4 million to £7.5 million in annual interest for every £1 billion borrowed.

The research examined government bond markets across 53 economies between 2000 and 2020. It represents the first empirical analysis directly linking nature degradation to the cost of sovereign debt. The findings matter because they quantify a financial risk that has, until now, been difficult to measure.

Researchers analysed bonds at two-year, five-year, and ten-year maturities. In every case, countries with greater biodiversity loss faced measurably higher interest rates when issuing new debt. The penalty exists regardless of whether a country is classified as advanced or emerging. However, the scale of the financial impact varies significantly based on existing borrowing costs.

Lower-income countries in Africa and Asia face disproportionate consequences. For nations already in the 90th percentile of borrowing costs, the additional penalty from biodiversity degradation reaches levels three times higher than the average impact. These countries therefore face a compounding problem. Their existing fiscal pressures are amplified by environmental factors that further restrict access to affordable capital.

Environmental damage creates measurable fiscal pressure for governments

The connection between nature loss and borrowing costs reflects deeper economic fundamentals. Environmental degradation undermines the productive capacity of economies in ways that financial markets now recognize and price accordingly.

Natural disasters become more frequent and severe as ecosystems degrade. These events cause direct GDP contractions that strain public finances. In small island developing states and fragile nations, some disasters have triggered GDP declines exceeding 10%. Recovery spending then compounds existing debt burdens, creating a cycle that markets factor into risk assessments.

Agricultural productivity suffers when natural capital depletes. Countries where farming and raw materials represent large shares of GDP experience employment losses and growth constraints. These productivity declines reduce tax revenues while simultaneously increasing demands on public spending for economic support programs.

Water crises, disease outbreaks, wildfires, and land degradation all generate fiscal shocks. Governments must allocate resources to emergency response and reconstruction. Meanwhile, the underlying economic damage reduces the tax base. This combination weakens fiscal balances and alters sovereign debt trajectories in ways that bond markets evaluate when setting interest rates.

The World Bank has modelled what happens if key ecosystem services partially collapse. Their analysis examined pollination, fisheries, and forest regulation. Results suggest that lower-income countries could face GDP losses exceeding 10% by 2030 under such scenarios. These are not abstract future risks. Financial markets are already incorporating nature-related vulnerabilities into current pricing decisions.

Private sector lending responds to biodiversity exposure in company operations

The repricing of nature-related risk extends beyond government borrowing. Research examining cross-border lending in Colombia found that companies with greater exposure to biodiversity loss now face higher borrowing costs. Loan spreads for these firms run roughly 5% higher than typical rates for comparable businesses with lower nature-related exposure.

Banks are adjusting loan structures in response to these risks. Firms operating in biodiversity-exposed sectors receive loans with extended maturities, typically 15% to 20% longer than average. This reflects lenders’ expectations that these companies will need more time to manage transition risks as nature-related financial policies become stricter.

Financial institutions increasingly view nature degradation through the same analytical lens they apply to climate risk. Both create transition risks as regulations tighten. Both generate physical risks that disrupt operations and supply chains. The Colombian lending data demonstrates that these risk assessments now influence commercial lending decisions in measurable ways.

Central banks have begun incorporating nature degradation into monetary policy frameworks. The European Central Bank formally integrated ecosystem risks into its strategy assessment alongside climate change. This decision reflects growing evidence that environmental shocks raise inflation and threaten both price stability and financial system resilience.

What this means for UK businesses and their finance functions

These developments create several practical implications for UK companies, particularly those with international operations or supply chains spanning multiple countries. The repricing of sovereign debt affects currency stability, inflation expectations, and the operating environment in countries where you source materials or manufacture products.

Companies operating in or sourcing from nature-vulnerable economies should expect increased volatility. When governments face higher borrowing costs, they often respond through fiscal tightening or currency adjustments. Either response can affect your cost base, contract values, and the viability of existing commercial relationships. Financial planning needs to account for these dynamics.

Supply chain finance becomes more complex. If your suppliers operate in countries experiencing nature-related borrowing cost increases, those suppliers face their own rising finance costs. These expenses ultimately flow through to contract negotiations. Procurement teams should therefore assess the nature-related financial risks embedded in their supply base, not just the direct operational risks.

For businesses tendering for public sector contracts, the integration of nature-related risks into government fiscal planning has direct consequences. The UK government now requires suppliers to demonstrate carbon reduction plans under Procurement Policy Note 06/21. Similar requirements for nature-related impacts are likely as environmental risks become better quantified and more clearly linked to fiscal outcomes.

Access to finance may become differentiated based on nature-related risk exposure. The Colombian research shows that lenders already price these risks into commercial loans. UK businesses with significant biodiversity impacts in their operations or supply chains should anticipate similar scrutiny from their own lenders, particularly as disclosure requirements under the Taskforce on Nature-related Financial Disclosures gain traction.

Companies need to understand their dependencies on ecosystem services. If your business relies on stable water supplies, agricultural inputs, or forest products, the financial risks extend beyond immediate operational concerns. The economic environments in which you operate become less stable as natural capital depletes, creating second-order effects that financial models must capture.

Financial markets now quantify what was previously unpriced risk

Several specific findings from the research warrant attention:

• Biodiversity degradation adds 40 to 75 basis points to sovereign borrowing costs across different bond maturities, based on analysis of 53 economies over twenty years.
• Countries in the 90th percentile of borrowing costs experience nature-related penalties three times higher than the average impact, concentrating financial pressure on already vulnerable economies.
• The World Bank projects GDP losses exceeding 10% in lower-income countries by 2030 if key ecosystem services such as pollination and fisheries experience partial collapse.
• Companies with high biodiversity exposure face loan spreads approximately 5% higher than comparable firms with lower nature-related risk profiles.
• Lenders extend loan maturities by 15% to 20% for firms in biodiversity-exposed sectors, reflecting anticipated transition risks as regulations tighten.
• The European Central Bank has integrated nature degradation into its monetary policy framework alongside climate change, recognizing threats to price and financial stability.

Finance teams should assess nature-related risk in business planning

The London School of Economics study demonstrates that nature-related risks have moved from environmental considerations to financial materiality. Markets now price these risks into both sovereign and corporate debt. Consequently, finance directors need to evaluate how ecosystem dependencies and impacts affect their businesses.

Start by mapping where your operations and supply chains intersect with nature-vulnerable geographies. The countries identified in the research as facing the highest borrowing cost penalties are those where ecosystem degradation has progressed furthest. If you operate in these regions, factor the associated economic instability into scenario planning.

Review your supplier base for concentrated exposure to nature-dependent sectors. Agriculture, fisheries, forestry, and water-intensive manufacturing all face direct productivity risks from ecosystem degradation. These risks translate into supply disruption and cost inflation. Diversification strategies should account for these vulnerabilities.

Engage with your lenders about how they assess nature-related risks. The Colombian research shows that banks already differentiate pricing based on biodiversity exposure. Understanding your lender’s methodology allows you to anticipate how your risk profile might be assessed and what actions could improve your position.

Consider how the Taskforce on Nature-related Financial Disclosures will affect your reporting obligations. As with climate-related disclosures under TCFD, nature-related reporting will likely become mandatory for larger companies. Early preparation provides time to develop robust measurement systems and identify management responses before disclosure deadlines arrive.

The integration of nature-related risks into debt sustainability analyses means that fiscal pressures in vulnerable countries will intensify. For businesses with significant exposure to these markets, this creates planning challenges that go beyond traditional country risk assessments. The IMF now classifies nature degradation as macrocritical, placing it in the same category as climate change for purposes of economic stability monitoring.

We work with businesses on carbon reporting and environmental compliance frameworks that increasingly incorporate nature-related considerations. As disclosure requirements expand and financial institutions refine their risk assessment methodologies, companies need systems that capture both climate and nature dependencies. The financial penalties documented in this research make clear that these are no longer optional considerations for business planning.

Where to find detailed analysis and official guidance

The London School of Economics published the full research paper examining sovereign borrowing costs and biodiversity degradation. It provides detailed methodology and country-specific findings that finance teams can use for scenario planning.

The International Monetary Fund has issued guidance on integrating nature-related risks into debt sustainability analyses. This document explains how environmental factors should be incorporated into fiscal risk assessments and what thresholds qualify risks as macrocritical.

The World Bank published modelling on ecosystem service collapse and projected GDP impacts. This research provides the underlying economic analysis that explains why financial markets have begun pricing nature-related risks into sovereign debt.

The Taskforce on Nature-related Financial Disclosures offers a comprehensive framework for corporate reporting on nature-related dependencies, impacts, risks, and opportunities. Early familiarization with these recommendations helps businesses prepare for likely future disclosure requirements.

UK businesses can access support through environmental compliance advisory services that help translate these macro-level financial risks into practical management responses. As markets continue integrating nature-related factors into risk pricing, companies need robust systems for measurement, disclosure, and strategic response.