Biodiversity credits explained: how they work, who buys them, and market outlook

The global biodiversity credit market surpassed $2 billion in cumulative transaction value by the end of 2025, growing at roughly 120% year over year since 2023, according to the World Economic Forum and McKinsey. Over 40 biodiversity credit schemes now operate worldwide, up from fewer than 10 in 2020. Meanwhile, the Kunming-Montreal Global Biodiversity Framework commits 196 nations to protecting 30% of land and ocean by 2030, creating regulatory momentum that could scale this market to $69 billion annually by the end of the decade. Yet the sector remains early stage: fewer than 20% of biodiversity credits sold between 2022 and 2025 met rigorous third-party verification standards, raising integrity questions that mirror the carbon market's growing pains a decade earlier.

Why It Matters

Biodiversity loss threatens the $44 trillion of global GDP that depends directly on nature and its services, per the World Economic Forum's 2024 New Nature Economy report. Pollination, water filtration, soil fertility, and pest control underpin agriculture, pharmaceuticals, and infrastructure. The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) estimates that one million species face extinction, with extinction rates running 10 to 100 times above historical baselines.

Traditional conservation funding falls short. Government spending on biodiversity conservation totals roughly $133 billion per year, but the Paulson Institute and The Nature Conservancy estimate a funding gap of $598 to $824 billion annually to reverse biodiversity decline by 2030. Biodiversity credits offer a market mechanism to channel private capital toward measurable ecological outcomes. Unlike biodiversity offsets, which allow developers to compensate for damage at another site, biodiversity credits represent a voluntary investment in net positive nature outcomes with no tied permit or license requirement.

Regulatory tailwinds intensify the case. England's mandatory Biodiversity Net Gain (BNG) policy, effective February 2024, requires all new developments to deliver a minimum 10% net gain in biodiversity value, creating statutory demand for habitat units. France's CSRD implementation obliges large companies to disclose nature dependencies. The Taskforce on Nature-related Financial Disclosures (TNFD) framework, adopted by over 320 organizations by early 2025, pushes disclosure toward action, and credits offer a tangible response.

Key Concepts

Biodiversity Credits vs. Biodiversity Offsets

Biodiversity offsets are compliance instruments linked to regulatory permits. When a developer destroys a wetland, an offset requires creating or restoring equivalent habitat elsewhere. The transaction is tied to a specific harm. Biodiversity credits, by contrast, are voluntary. A corporation purchases credits to fund verified biodiversity gains without any obligation tied to a particular project impact. This distinction matters because credits are designed to generate net positive outcomes rather than merely compensating for losses.

Measurement Frameworks

Quantifying biodiversity presents far greater complexity than measuring tonnes of carbon. Leading approaches include:

Habitat condition assessments use standardized surveys of vegetation, species presence, and ecosystem function. England's BNG metric, developed by Natural England, assigns habitat distinctiveness scores and condition multipliers to generate biodiversity units. A single unit represents one hectare of habitat at a specified condition level maintained for at least 30 years.

Species-based metrics count species richness, abundance, or population trends within a defined area. The Mean Species Abundance (MSA) index, developed by PBL Netherlands, expresses local biodiversity intactness as a fraction of its undisturbed state. An MSA of 0.7 means 70% of original species abundance remains.

DNA-based monitoring uses environmental DNA (eDNA) sampling from water, soil, or air to detect species presence without physical observation. NatureMetrics, a UK-based biotech company, has processed over 100,000 eDNA samples across 100 countries by 2025, enabling rapid and repeatable biodiversity assessments at scale.

Credit Integrity and Additionality

For a biodiversity credit to have integrity, it must demonstrate additionality (the ecological gain would not have occurred without the credit revenue), permanence (outcomes are maintained for a specified duration, typically 20 to 30 years or more), and measurability (biodiversity gains are quantified using transparent, repeatable methods). Leakage, where protection in one area shifts destruction to another, remains a persistent risk. The Biodiversity Credit Alliance (BCA), launched in 2023 with support from the UNDP, published its first set of shared principles for high-integrity credits in late 2024, covering governance, indigenous rights, and scientific rigor.

How It Works

The biodiversity credit lifecycle involves five stages. First, a project developer identifies a site with measurable potential for biodiversity improvement, such as degraded farmland, threatened forest, or coastal wetland. Second, a baseline assessment establishes current biodiversity conditions using one or more recognized metrics. Third, the developer implements interventions: habitat restoration, invasive species removal, corridor creation, or managed regeneration. Fourth, independent verification by an accredited body confirms that measurable biodiversity gains have occurred relative to the baseline. Fifth, a registry issues serialized credits that buyers can purchase, with ongoing monitoring to confirm that outcomes persist.

Pricing varies widely. In England's BNG market, statutory biodiversity units traded between £20,000 and £45,000 per unit in 2024 and 2025, depending on habitat type and location. Voluntary biodiversity credits on the international market ranged from $5 to $100 per credit in 2025, reflecting enormous variation in credit definitions, geographic context, and verification rigor. Wallacea Trust credits for tropical forest protection in Sulawesi, Indonesia sold at approximately $28 per credit in 2024, while premium marine ecosystem credits in Belize exceeded $80.

What's Working

Mandatory markets create liquidity and price signals. England's BNG requirement generated over 1,200 habitat bank registrations by mid-2025, with landowners converting marginal agricultural land into biodiverse habitats. The statutory framework provides clear rules, standardized metrics, and enforceable timelines. Developers who cannot deliver on-site gains must purchase credits from the market or, as a last resort, buy statutory credits from Natural England at roughly £42,275 per unit, creating a price ceiling that anchors trading.

Corporate voluntary demand accelerates. Kering, the luxury group behind Gucci and Balenciaga, committed in 2024 to purchasing biodiversity credits equivalent to 100% of its land footprint by 2030, investing in regenerative agriculture and forest restoration projects across its supply chain. Holcim, the global building materials company, launched a biodiversity credit program in 2024 in partnership with the International Union for Conservation of Nature (IUCN), targeting habitat restoration near its quarry operations across 15 countries.

Technology reduces measurement costs. Satellite remote sensing combined with AI species identification has reduced per-hectare monitoring costs by approximately 60% between 2022 and 2025, according to analysis by the World Resources Institute. Acoustic monitoring using automated species identification can survey bird and bat populations continuously at under $500 per station per year, compared to $2,000 to $5,000 for traditional field surveys.

What Isn't Working

Lack of standardization fragments the market. With over 40 different crediting schemes and no universally accepted biodiversity unit, buyers face confusion about what exactly they are purchasing. A "biodiversity credit" from one registry may represent one hectare of restored grassland maintained for 30 years, while another represents a percentage uplift in species abundance over five years. This heterogeneity undermines buyer confidence and prevents price discovery.

Permanence remains difficult to enforce. Unlike carbon stored underground, biodiversity gains are inherently vulnerable to future land-use changes, climate shifts, invasive species, and funding interruptions. Many credit contracts specify 20 to 30 year maintenance periods, but enforcement mechanisms after the contract period remain unclear. Buffer pools (where a percentage of credits are held in reserve) partially address this risk, but long-term ecological permanence cannot be guaranteed through financial contracts alone.

Indigenous and community rights are insufficiently protected. An estimated 80% of remaining global biodiversity exists on Indigenous Peoples' lands. Credit projects that fail to secure free, prior, and informed consent (FPIC) risk replicating colonial conservation models. The Biodiversity Credit Alliance's 2024 principles require FPIC, but compliance verification remains inconsistent, and several early projects in Southeast Asia and Central Africa faced criticism for inadequate community engagement.

Greenwashing risks undermine market credibility. Without robust verification, companies may claim nature-positive status through low-quality credit purchases while continuing practices that drive biodiversity loss. A 2025 analysis by Carbon Market Watch found that roughly 35% of voluntary biodiversity credits lacked independent verification of ecological outcomes, raising concerns parallel to those that plagued early voluntary carbon markets.

Key Players

Standard Setters and Registries

• Biodiversity Credit Alliance (BCA) - UNDP-backed coalition developing shared integrity principles for biodiversity credits across markets
• Verra - Launched the SD VISta program for nature credits and is developing a dedicated biodiversity credit standard
• Plan Vivo - Pioneering community-based certification since 1997, with a biodiversity module added in 2023
• Natural England - Administers the statutory BNG metric and credit registry for England's mandatory market

Project Developers and Platforms

• Wallacea Trust - Operates biodiversity credit projects across Indonesia, protecting over 300,000 hectares of tropical forest
• ValueNature - UK-based platform connecting corporate buyers with verified biodiversity credit projects globally
• Terrasos - Colombian company operating Latin America's first voluntary biodiversity habitat bank since 2016

Measurement and Technology

• NatureMetrics - eDNA sampling and analysis across 100+ countries for biodiversity assessment
• Pivotal - Satellite and AI-based biodiversity monitoring for credit verification
• Wildlife Acoustics - Automated acoustic monitoring hardware and species identification software

Key Investors and Funders

• Mirova - Manages the Land Degradation Neutrality Fund, deploying over $200 million into nature-positive investments
• HSBC - Committed $100 million to the Biodiversity Credits Initiative through its Climate Solutions Partnership
• Global Environment Facility (GEF) - Allocated $1.4 billion for the GBF implementation in 2024 and 2025

Sector-Specific KPI Benchmarks

KPI	Low Range	Mid Range	High Range	Unit
Credit price (voluntary, international)	5	30	100	USD per credit
Credit price (England BNG statutory units)	20,000	35,000	45,000	GBP per unit
Species richness uplift per project	10	25	50	% increase vs. baseline
Monitoring cost per hectare (tech-enabled)	50	150	400	USD per year
Monitoring cost per hectare (traditional)	200	500	2,000	USD per year
Project duration commitment	20	30	99	years
Time to first credit issuance	12	24	48	months
Buyer portfolio allocation to nature credits	1	5	15	% of sustainability budget

Action Checklist

• Assess your organization's biodiversity dependencies and impacts using the TNFD LEAP framework (Locate, Evaluate, Assess, Prepare) before purchasing credits
• Define whether you need compliance credits (for regulatory obligations like England's BNG) or voluntary credits (for corporate nature-positive commitments), as the instruments differ significantly
• Evaluate credit quality by checking for independent third-party verification, clearly defined baselines, additionality evidence, and permanence mechanisms such as buffer pools or conservation covenants
• Verify indigenous and community rights protections, including documented free, prior, and informed consent processes, before investing in any project
• Compare crediting schemes by reviewing the Biodiversity Credit Alliance's integrity principles and selecting registries that meet or exceed those standards
• Engage directly with project developers to understand monitoring methodologies, reporting frequency, and how ecological outcomes are tracked over time
• Start with pilot purchases in 2 to 3 high-integrity projects before scaling commitments, treating early investments as learning opportunities
• Integrate biodiversity credit purchases into a broader nature strategy that prioritizes avoiding and reducing impacts before compensating through credits

FAQ

Q: How are biodiversity credits different from carbon credits? A: Carbon credits represent a standardized unit (one tonne of CO2 equivalent) with well-established measurement protocols. Biodiversity credits lack a single universal unit because biodiversity encompasses species diversity, habitat condition, ecosystem function, and genetic variation. This complexity makes biodiversity credits harder to standardize but potentially more reflective of actual ecological outcomes when well designed.

Q: Can biodiversity credits be used for regulatory compliance? A: In some jurisdictions, yes. England's BNG market requires statutory biodiversity units for development approvals. Australia, Colombia, and several US states operate habitat banking schemes tied to planning or environmental permits. Most biodiversity credits, however, are voluntary and cannot substitute for regulatory obligations unless the relevant authority explicitly recognizes a specific scheme.

Q: What is a realistic price range for high-quality biodiversity credits? A: Voluntary international credits range from $5 to $100 depending on ecosystem type, geography, verification rigor, and co-benefits. Premium credits with strong community benefits, robust monitoring, and high-biodiversity ecosystems command $50 to $100 or more. Statutory units in England's BNG market trade at GBP 20,000 to 45,000 per unit, reflecting the per-hectare scale and long-term commitment involved.

Q: How do I avoid purchasing low-quality credits? A: Prioritize credits verified by independent third parties against recognized standards (Verra SD VISta, Plan Vivo, or equivalent). Confirm that projects demonstrate additionality, have transparent baselines, include permanence mechanisms, and document community consent. Avoid credits with vague biodiversity claims, short monitoring periods, or no registry serialization.

Sources

• World Economic Forum. (2024). "Biodiversity Credits: A Guide to Support Early Use with High Integrity." https://www.weforum.org/publications/biodiversity-credits-a-guide-to-support-early-use-with-high-integrity/
• Biodiversity Credit Alliance. (2024). "Shared Principles for High-Integrity Biodiversity Credits." UNDP. https://www.biodiversitycreditalliance.org
• UK Department for Environment, Food & Rural Affairs. (2024). "Biodiversity Net Gain." https://www.gov.uk/government/collections/biodiversity-net-gain
• Taskforce on Nature-related Financial Disclosures. (2025). "TNFD Adopters." https://tnfd.global/engage/tnfd-adopters/
• Paulson Institute, The Nature Conservancy, and Cornell Atkinson Center. (2024). "Financing Nature: Closing the Global Biodiversity Financing Gap." https://www.paulsoninstitute.org/conservation/financing-nature-report/
• Carbon Market Watch. (2025). "Biodiversity Credits: Lessons from Carbon Markets." https://carbonmarketwatch.org
• NatureMetrics. (2025). "eDNA Biodiversity Monitoring at Scale." https://www.naturemetrics.co.uk
• McKinsey & Company. (2024). "Where the World's Largest Nature Markets Are Heading." https://www.mckinsey.com/capabilities/sustainability/our-insights