Deep dive: Biodiversity credits & nature markets — what's working, what's not, and what's next

Biodiversity credits represent one of the fastest evolving and most contested instruments in environmental finance. Unlike carbon credits, which quantify a single fungible commodity (tonnes of CO2 equivalent), biodiversity credits attempt to measure, standardize, and trade outcomes across ecosystems that are inherently local, context-dependent, and ecologically complex. As of early 2026, the global biodiversity credit market has grown to an estimated $1.2 billion in annual transaction volume, according to NatureFinance, up from approximately $300 million in 2023. Yet that figure obscures enormous variation in credit quality, pricing, methodology, and buyer confidence. For sustainability leads operating within UK and European regulatory frameworks, particularly those navigating the Taskforce on Nature-related Financial Disclosures (TNFD) recommendations and incoming EU Corporate Sustainability Reporting Directive (CSRD) requirements, understanding what is actually working in biodiversity markets is no longer optional.

Why It Matters

The Kunming-Montreal Global Biodiversity Framework (GBF), adopted in December 2022, established the target of protecting 30% of land and ocean by 2030 and mobilizing at least $200 billion annually for biodiversity conservation. Current public and philanthropic funding delivers roughly $130-140 billion per year, leaving a financing gap of $60-70 billion that private capital and market mechanisms must fill. Biodiversity credits are positioned as one of the primary instruments to close that gap, alongside debt-for-nature swaps, blended finance vehicles, and payments for ecosystem services.

In the UK specifically, the Environment Act 2021 mandated Biodiversity Net Gain (BNG) for all planning permissions in England starting February 2024, requiring developments to deliver a minimum 10% net gain in biodiversity value. This created the first scaled, compliance-driven biodiversity credit market in any major economy, with Natural England operating as the statutory credit seller of last resort through its scheme at approximately $50,000 per biodiversity unit. The BNG requirement alone is projected to generate $500-800 million in annual demand by 2027, according to analysis from the Green Finance Institute.

Across the EU, Article 29 of the CSRD requires disclosure on biodiversity impacts, dependencies, risks, and opportunities, pushing thousands of European companies to assess their nature-related exposures for the first time. Meanwhile, the Science Based Targets Network (SBTN) released initial corporate guidance for setting nature targets in 2023, with validation processes expected to become mainstream by 2027. These regulatory and voluntary drivers are creating demand for quantified biodiversity outcomes that markets are scrambling to supply.

Key Concepts

Biodiversity Units and Metrics represent the fundamental measurement challenge. England's BNG system uses the Defra Biodiversity Metric 4.0, which calculates habitat distinctiveness, condition, strategic significance, and area to produce a composite "biodiversity unit" score. Australia's stewardship schemes use different metrics tied to native vegetation condition. Voluntary markets have introduced competing methodologies, including Wallacea Trust's Biodiversity Impact Units, Plan Vivo's biodiversity certificates, and ValueNature's species-weighted hectare approach. This fragmentation means a biodiversity credit purchased in one scheme is not comparable to one from another, creating significant buyer confusion and limiting liquidity.

Additionality and Permanence remain as challenging for biodiversity credits as they are for carbon. A credible biodiversity credit must demonstrate that the ecological improvement would not have occurred without the credit revenue (additionality) and that the gains persist over meaningful timeframes (typically 30+ years for compliance markets, though voluntary schemes vary). Proving additionality for habitat restoration on privately owned land requires establishing credible counterfactual baselines, which is methodologically difficult when land use decisions are influenced by agricultural subsidies, planning policy, and commodity prices simultaneously.

Stacking and Bundling refers to the practice of generating multiple credit types from the same land parcel. A restored peatland might generate biodiversity credits, carbon credits (from avoided emissions and sequestration), and nutrient credits (from reduced phosphate runoff) simultaneously. Whether stacking should be permitted is one of the most contentious design questions in nature markets. Proponents argue that stacking maximizes landowner revenue and incentivizes more ambitious restoration. Critics warn that double-counting undermines the integrity of each individual credit type. The UK's BNG system currently prohibits combining biodiversity units with carbon credits from the same intervention, though separate activities on the same site may qualify for both.

Habitat Banking allows landowners or intermediaries to create biodiversity credits in advance of demand by undertaking habitat creation or restoration proactively. England's habitat banking provisions enable "habitat banks" to register sites, undertake improvements, and sell resulting biodiversity units to developers who cannot achieve on-site or near-site gains. As of January 2026, approximately 340 habitat banks have been registered in England, with an estimated 15,000-20,000 biodiversity units in pipeline supply. However, the distribution is highly uneven, with London and southeast England facing unit shortages while northern regions have oversupply, creating geographic price differentials of 3-5x.

What's Working

England's Biodiversity Net Gain Compliance Market

The BNG system represents the most mature compliance-driven biodiversity credit market globally. After initial implementation challenges through 2024, the system processed over 4,200 planning applications requiring biodiversity assessments in its first year. Key success factors include clear regulatory mandate (the 10% net gain requirement), standardized methodology (Defra Metric 4.0), institutional credit supply backstop (Natural England's statutory credits), and integration into existing planning workflows. Prices for off-site biodiversity units have settled into a range of $25,000-55,000 per unit depending on habitat type and geographic location, providing meaningful revenue streams for landowners undertaking restoration. The Environment Bank, a leading habitat bank operator, reported that its registered sites had generated over $45 million in credit sales through 2025.

Voluntary Biodiversity Certificates in Corporate Supply Chains

Several multinational companies have pioneered voluntary biodiversity credit procurement linked to their supply chain footprints. Kering, the luxury goods group, invested $5.3 million in biodiversity credits through its Regenerative Fund for Nature, targeting restoration projects in key sourcing regions including Mongolia, southern France, and Uruguay. Holcim, the cement manufacturer, has committed to purchasing biodiversity credits equivalent to the habitat disturbance footprint of its quarrying operations across 12 countries. These voluntary programs demonstrate genuine corporate demand, though current prices ($15-45 per biodiversity unit in voluntary markets) remain well below the levels needed to fund restoration at the scale required by the GBF targets.

Technology-Enabled Monitoring and Verification

Remote sensing, environmental DNA (eDNA), and acoustic monitoring technologies have substantially improved the feasibility of measuring biodiversity outcomes at scale. NatureMetrics, a UK-based company, uses eDNA sampling to detect species presence from water and soil samples, providing standardized biodiversity assessments at approximately $800-1,200 per site compared to $5,000-15,000 for traditional ecological surveys. Satellite and drone imagery processed through machine learning models can now detect habitat condition changes at 10-meter resolution on quarterly cycles. These technologies are beginning to address the historically prohibitive cost of biodiversity monitoring, which has been a primary barrier to scaling credible credit markets.

What's Not Working

Methodological Fragmentation and Lack of Global Standards

The absence of a globally accepted biodiversity credit methodology remains the single largest barrier to market scale. Unlike carbon markets, which converged around the tonne of CO2 equivalent as a standard unit, biodiversity markets face fundamental disagreement about what should be measured. Some methodologies focus on habitat area and condition, others on species richness or abundance, and still others on ecosystem function or genetic diversity. The International Advisory Panel on Biodiversity Credits (IAPBC), convened by the governments of France and the UK, published its initial recommendations in October 2024, but these remain advisory rather than prescriptive. Without methodological convergence, institutional buyers cannot compare credits across schemes, registries cannot establish fungibility, and secondary markets cannot develop.

Integrity Concerns and Greenwashing Risk

Early voluntary biodiversity credit schemes have faced credible criticism regarding additionality, permanence, and verification rigor. A 2025 investigation by the Guardian found that several UK-based biodiversity offset projects approved under pre-BNG voluntary schemes showed no measurable improvement in ecological condition three years after implementation. Research published in Biological Conservation documented cases where biodiversity offsets were located in areas with low development pressure, raising questions about whether the protected habitats faced genuine threats. For sustainability leads, these integrity concerns create reputational risk when procuring credits for corporate claims, particularly as anti-greenwashing regulations tighten under the EU Green Claims Directive.

Pricing Disconnect Between Supply Costs and Buyer Willingness

Credible biodiversity restoration costs significantly more than current voluntary market prices can support. Peatland restoration in upland UK settings costs $8,000-15,000 per hectare for initial works alone, with ongoing management costs of $1,000-2,500 per hectare annually for 30+ years. Woodland creation costs $5,000-12,000 per hectare depending on species mix and site preparation. When these costs are translated into per-unit biodiversity credit prices, economically viable rates exceed $30,000-50,000 per unit, well above the $15-25 per unit that most voluntary buyers are currently willing to pay. This pricing gap means that many projects rely on philanthropic co-funding or public subsidy to remain financially viable, undermining the market's ability to operate as a self-sustaining mechanism.

Spatial Mismatch Between Impact and Offset

Biodiversity is inherently local. A hectare of restored chalk grassland in Kent does not compensate for the loss of ancient woodland in Devon, even if both generate equivalent biodiversity units under the Defra metric. The BNG system attempts to address this through its spatial hierarchy (on-site, then local, then national offsets), but in practice, geographic mismatches remain common. Research from the University of Oxford's Nature-based Solutions Initiative found that 62% of BNG off-site compensation in the first year of implementation occurred more than 25 kilometers from the development site, raising questions about whether local ecological networks were being maintained.

What's Next

Convergence Toward a Global Biodiversity Credit Framework

The IAPBC process, the Biodiversity Credit Alliance, and the World Economic Forum's biodiversity credit initiative are all working toward common standards expected to crystallize during 2026-2027. Key elements likely to emerge include standardized monitoring protocols incorporating remote sensing and eDNA, minimum additionality and permanence requirements comparable to high-integrity carbon credit standards, and transparent registry infrastructure enabling independent verification. The UK government's consultation on enhancing BNG credit quality standards, expected in mid-2026, will likely influence global voluntary market design.

Integration with TNFD and CSRD Reporting

As TNFD-aligned disclosures become mainstream (over 1,100 organizations adopted TNFD reporting by January 2026), companies will increasingly need quantified nature-positive metrics tied to their operations and supply chains. Biodiversity credits offer one pathway to demonstrate progress, but only if credit quality is sufficient to withstand audit scrutiny. The EU CSRD's European Sustainability Reporting Standards (ESRS) E4 on biodiversity require disclosure of impacts, dependencies, and transition plans, creating a disclosure-to-action pipeline that biodiversity credits can serve.

Sovereign and Regional Biodiversity Credit Schemes

Following England's BNG model, several jurisdictions are developing compliance-driven biodiversity credit markets. Australia's reformed stewardship scheme, France's proposed obligations reelles environnementales expansion, and Colombia's BanCO2 program all represent emerging compliance or quasi-compliance demand sources. The Biodiversity Finance Plan required under the GBF Target 19 will push additional countries toward market-based instruments. Analysts at BloombergNEF project that compliance-driven biodiversity credit demand could reach $4-8 billion annually by 2030 if current regulatory trajectories hold.

KPIs and Benchmark Ranges

Metric	Below Average	Average	Above Average	Top Quartile
BNG Unit Price (England compliance)	<$20,000	$25,000-35,000	$35,000-50,000	>$50,000
Voluntary Credit Price (per unit)	<$10	$15-25	$25-40	>$40
Monitoring Cost per Hectare (annual)	>$3,000	$1,500-3,000	$800-1,500	<$800
Time to Credit Issuance	>36 months	24-36 months	18-24 months	<18 months
Habitat Condition Improvement (Year 5)	<1 condition category	1 category	1-2 categories	>2 categories
Species Richness Increase (%)	<10%	10-20%	20-35%	>35%

Action Checklist

• Assess your organization's biodiversity dependencies and impacts using the TNFD LEAP framework before entering credit markets
• Map supply chain biodiversity risks to identify priority geographies where credit procurement provides genuine ecological value
• Require third-party verification of additionality and permanence claims before purchasing any biodiversity credits
• Prioritize credits from compliance-grade schemes (e.g., BNG in England) or high-integrity voluntary standards with transparent registries
• Establish internal policies distinguishing between insetting (within value chain) and offsetting (external compensation) approaches
• Engage with habitat bank operators to understand geographic availability and pricing for your development or supply chain footprint
• Monitor regulatory developments including CSRD ESRS E4 requirements, EU Nature Restoration Law implementation, and UK BNG enhancements
• Allocate biodiversity credit budgets at $30,000-50,000 per unit for compliance-grade credits rather than relying on low-cost voluntary certificates

FAQ

Q: How do biodiversity credits differ from carbon credits? A: Carbon credits measure a single fungible unit (tonnes of CO2 equivalent) with well-established global methodologies. Biodiversity credits attempt to quantify multi-dimensional ecological outcomes (habitat quality, species presence, ecosystem function) that are inherently location-specific and not easily comparable across sites or methodologies. This fundamental difference means biodiversity credits currently lack the standardization, liquidity, and price discovery mechanisms that carbon markets have developed over two decades.

Q: Can biodiversity credits be used for corporate nature-positive claims? A: With significant caveats. The Science Based Targets Network guidance distinguishes between actions within a company's value chain (which count toward targets) and external compensation through credits (which do not substitute for reducing direct impacts). Biodiversity credits can supplement but should not replace direct impact reduction. Under the EU Green Claims Directive, any nature-positive claims based on credit purchases will require robust evidence of credit quality, additionality, and permanence, with penalties for unsubstantiated claims.

Q: What is the price trajectory for biodiversity credits? A: Compliance market prices (such as England's BNG) are expected to increase as supply constraints tighten in high-demand geographies and as habitat creation standards become more rigorous. Voluntary market prices are likely to converge upward toward compliance levels as integrity standards improve and low-quality credits are excluded. Analysts project average prices of $35,000-60,000 per compliance unit and $25-50 per voluntary unit by 2028, though geographic variation will remain significant.

Q: What risks should buyers consider when procuring biodiversity credits? A: Key risks include regulatory change (standards tightening may invalidate previously acceptable credits), reputational risk (association with low-quality projects), permanence failure (habitat degradation after credit issuance), and geographic mismatch (offsets too distant from impact sites to maintain ecological connectivity). Buyers should also consider the risk that methodological fragmentation resolves in a way that devalues credits purchased under now-superseded standards.

Q: How is technology changing biodiversity credit verification? A: Remote sensing, eDNA analysis, acoustic monitoring, and machine learning are reducing the cost and increasing the frequency of biodiversity monitoring. NatureMetrics provides eDNA-based species detection at a fraction of traditional survey costs. Satellite imagery processed through computer vision models enables near-continuous habitat condition tracking. These technologies are shifting verification from periodic expert site visits toward continuous, data-driven monitoring, which improves credit credibility and reduces fraud risk.

Sources

• NatureFinance. (2025). The State of Biodiversity Credit Markets: 2025 Annual Review. Geneva: NatureFinance.
• Green Finance Institute. (2025). Biodiversity Net Gain Market Analysis: Supply, Demand and Price Formation in England. London: GFI.
• International Advisory Panel on Biodiversity Credits. (2024). Recommendations for a High-Integrity Biodiversity Credit Market. Paris/London: IAPBC Secretariat.
• Zu Ermgassen, S. et al. (2025). "The effectiveness of biodiversity offsets: a systematic review of ecological outcomes." Biological Conservation, 291, 110472.
• Defra. (2024). Biodiversity Net Gain: Statutory Biodiversity Metric 4.0 Technical Supplement. London: Department for Environment, Food and Rural Affairs.
• BloombergNEF. (2025). Nature Markets Outlook: Scaling Biodiversity Finance to 2030. New York: Bloomberg LP.
• Natural England. (2025). Statutory Biodiversity Credits Scheme: First Year Review. York: Natural England.
• Taskforce on Nature-related Financial Disclosures. (2025). TNFD Recommendations: Adoption Tracker and Implementation Guidance. Available at: https://tnfd.global/