BNG Statutory Credits Report 2025-2026: What UK Developers Must Know in August 2026

Last updated: August 22, 2026

Quick Answer: The DEFRA BNG Statutory Credits Report 2025-2026 UK developers August 2026 reveals that total statutory credit payments reached approximately £426,100 for the year ending 31 March 2026, with Natural England administrative costs of £76,306. From 6 August 2026, significant regulatory changes reshape who must comply, which sites are exempt, and how the biodiversity gain hierarchy applies to non-major development. Statutory credits remain the last resort, with prices ranging from £42,000 to approximately £650,000 per unit depending on habitat type.

Key Takeaways

• Total BNG statutory credit payments for 2025-2026 were approximately £426,100, with Natural England admin costs of £76,306 (DEFRA/GOV.UK)
• Statutory credits cost between £42,000 (cheapest habitat type) and approximately £650,000 (intertidal/saltmarsh)
• From 6 August 2026, sites of 0.2 ha or less are exempt from mandatory BNG requirements
• Temporary developments lasting up to five years are now also exempt from BNG obligations
• The self-build and custom-build exemption has been removed from 6 August 2026
• For non-major development, registered off-site biodiversity units now sit alongside on-site creation in the hierarchy
• Statutory credits remain the last resort and cannot substitute for genuine on-site or off-site habitat delivery where feasible
• Developers who submitted applications before 31 July 2026 follow the old rules; those submitting after must apply the new framework

What Are BNG Statutory Credits and How Do They Work

BNG statutory credits are government-issued units that developers purchase as an absolute last resort when they cannot meet their mandatory 10% biodiversity net gain requirement through on-site habitat creation or registered off-site biodiversity units. They are sold by Natural England on behalf of the Secretary of State, with proceeds directed to habitat creation projects in England.

The process works as follows:

• A developer calculates their biodiversity unit shortfall using the DEFRA biodiversity metric
• They must first exhaust on-site habitat creation options
• They must then explore registered off-site biodiversity units via the biodiversity gain sites register
• Only after demonstrating both are genuinely unavailable or insufficient may they purchase statutory credits
• Natural England invoices the developer and administers the transaction
• The credit purchase does not confer planning permission; it satisfies the BNG condition only

Key constraint: Statutory credits are priced to be deliberately expensive, which incentivises developers to pursue genuine habitat creation rather than simply paying to offset harm.

BNG Statutory Credits Report 2025-2026: Key Findings

The DEFRA BNG Statutory Credits Report covering 1 April 2025 to 31 March 2026 provides the clearest picture yet of how the statutory credit mechanism is functioning in practice.

Stat callout: Total statutory credit payments for 2025-2026 reached approximately £426,100, against Natural England administration costs of £76,306, meaning the credit mechanism is still in its early, low-volume phase. (Source: DEFRA/GOV.UK)

Key findings from the report:

• Credit uptake remains modest, consistent with the policy intent that statutory credits act as a backstop rather than a mainstream compliance route
• Natural England's administrative overhead (£76,306) represents a significant proportion of total receipts, reflecting the fixed costs of running the credit system at low volume
• The data covers the first full year in which mandatory BNG applied to both major and small-site development
• No single habitat type dominates credit purchases, though intertidal and saltmarsh credits (at approximately £650,000 each) represent the highest-value transactions

The low overall spend suggests most developers are successfully sourcing biodiversity units through on-site creation or the private off-site market, which aligns with DEFRA's policy objectives.

Who Needs to Comply With BNG Statutory Credits Requirements

Mandatory BNG applies to most planning applications in England for development that affects a priority or non-priority habitat. From 6 August 2026, the compliance picture has changed materially.

Must comply:

• Major residential and commercial development (unchanged)
• Small-site development where the site area exceeds 0.2 ha (new threshold from 6 August 2026)
• Self-build and custom-build projects (exemption removed from 6 August 2026)
• Householder applications affecting habitats above the de minimis threshold

Exempt from 6 August 2026:

• Development on sites of 0.2 ha or less (small-site exemption)
• Temporary developments with a planning permission duration of up to five years
• Permitted development (unchanged)
• Development with no impact on priority habitat and negligible biodiversity value (de minimis)

Edge case: A self-build project on a site of 0.2 ha or less would qualify for the small-site exemption even though the self-build exemption has been removed. The site-size exemption takes precedence.

How Much Do BNG Statutory Credits Cost in 2025-2026

Statutory credit prices are set by the government and vary by habitat type. They are intentionally set above the market rate for private off-site units to ensure credits remain a last resort.

Habitat Type	Approximate Credit Price
Grassland (lowest tier)	From £42,000 per unit
Woodland	Mid-range (above £42,000)
Wetland/heathland	Higher tier
Intertidal/saltmarsh	Up to approximately £650,000 per unit

Prices attributed to GOV.UK statutory credit pricing schedule. Developers should verify current prices directly with Natural England before project budgeting.

The wide price range reflects the relative scarcity and ecological value of different habitat types. A developer impacting saltmarsh who cannot source off-site units faces a very significant financial liability, which is precisely the deterrent effect the government intends.

BNG Statutory Credits vs Habitat Banking: What's the Difference

Statutory credits and private habitat bank units both satisfy BNG obligations, but they operate through entirely different mechanisms.

Feature	Statutory Credits	Private Habitat Bank Units
Seller	Natural England (government)	Private landowner/habitat bank operator
Price	Fixed by government schedule	Market-determined
Availability	Always available (last resort)	Subject to supply and location
Hierarchy position	Last resort only	Preferred over statutory credits
Habitat specificity	Broad categories	Can be highly specific
Register requirement	N/A	Must be on biodiversity gain sites register

Choose statutory credits if no registered off-site units of the required type are available within a reasonable distance, or if the volume required cannot be sourced from the private market within the planning timeline.

Choose private habitat bank units if they are available, as they will almost always be cheaper and are preferred under the biodiversity gain hierarchy.

BNG Regulatory Changes From 6 August 2026: Old Rules vs New Rules

The 6 August 2026 changes represent the most significant revision to the BNG framework since mandatory requirements came into force. Developers submitting applications after 31 July 2026 must apply the new framework.

Rule Area	Old Rule (pre-6 Aug 2026)	New Rule (from 6 Aug 2026)
Small-site exemption	Separate small-site regime, phased rollout	Blanket exemption for sites 0.2 ha or less
Temporary developments	No specific exemption	Exempt if planning permission up to 5 years
Self-build/custom-build	Exempt from mandatory BNG	Exemption removed; must comply
Hierarchy (non-major)	On-site first, then off-site, then credits	Registered off-site units alongside on-site creation
Statutory credits	Last resort	Remains last resort (unchanged)

Practical implication: For non-major development, the relaxed hierarchy means developers no longer need to demonstrate that on-site creation is impossible before approaching the off-site market. This reduces the evidential burden for smaller schemes.

Can Small Developers Opt Out of BNG Requirements

Yes, but only if the site meets the new 0.2 ha threshold. From 6 August 2026, any development on a site of 0.2 ha or less is exempt from mandatory BNG, regardless of the type of development or developer.

Important caveats:

• The exemption applies to the site area, not the footprint of the building
• Developers must still complete a biodiversity gain assessment to confirm eligibility for the exemption
• Local planning authorities may still request ecological information as part of the application
• The exemption does not override any habitat-specific protections (e.g., Sites of Special Scientific Interest)

Small developers with sites just above 0.2 ha should not attempt to artificially split applications to fall below the threshold; local planning authorities are alert to this approach.

Common Mistakes Developers Make With Biodiversity Net Gain

These are the most frequent errors seen in BNG submissions, particularly relevant given the August 2026 rule changes.

• Assuming the old hierarchy still applies: For non-major development submitted after 31 July 2026, registered off-site units now sit alongside on-site creation. Applying the old sequential approach is no longer required.
• Forgetting the self-build exemption has gone: Self-build projects on sites above 0.2 ha must now comply fully with BNG. Failing to budget for this is a common oversight.
• Using statutory credits as a first option: Purchasing statutory credits without demonstrating that on-site and off-site options have been genuinely explored will likely result in a planning condition not being discharged.
• Miscalculating the biodiversity metric: Using an outdated version of the DEFRA biodiversity metric produces incorrect unit calculations. Always use the current published version.
• Not registering off-site units before relying on them: Off-site units must be on the biodiversity gain sites register before they can be used to satisfy a BNG condition.

BNG Statutory Credits Deadline August 2026: What the Cut-Off Means

The 31 July 2026 cut-off date is the dividing line between the old and new BNG frameworks. Applications validated on or before 31 July 2026 are assessed under the pre-August rules. Applications validated from 1 August 2026 onwards fall under the 6 August 2026 revised framework.

For developers currently in the pipeline:

• If your application was validated before 1 August 2026, confirm with your planning consultant which rule set applies
• If submitting now (August 2026 or later), apply the new hierarchy and exemption thresholds from the outset
• Do not rely on transitional arrangements without written confirmation from the local planning authority

How to Calculate BNG Requirements for Your Project

BNG requirements are calculated using the DEFRA biodiversity metric, which assigns unit values to habitats based on their type, condition, and distinctiveness.

Steps for a standard calculation:

1. Commission a baseline habitat survey of the application site
2. Enter existing habitat data into the DEFRA biodiversity metric tool
3. Calculate the pre-development biodiversity unit value
4. Apply the 10% uplift requirement to determine the minimum post-development unit value needed
5. Calculate what on-site habitat creation will deliver
6. Identify any shortfall and source registered off-site units or (as last resort) statutory credits
7. Complete the biodiversity gain plan and submit with the planning application

For non-major development from 6 August 2026, steps 5 and 6 can be addressed simultaneously rather than sequentially.

Where to Buy BNG Statutory Credits UK

Statutory credits are purchased exclusively through Natural England. There is no secondary market or broker for statutory credits.

• Contact Natural England's BNG team directly via GOV.UK
• Provide your planning application reference, habitat type, and unit quantity required
• Natural England will issue an invoice; payment must be confirmed before the credit certificate is issued
• The certificate is then submitted to the local planning authority to discharge the BNG condition

For private off-site units, the biodiversity gain sites register (maintained by Natural England and accessible via GOV.UK) lists all registered habitat bank sites available for purchase.

What Happens If You Don't Meet BNG Statutory Credits Requirements

Failure to satisfy BNG requirements prevents the discharge of the relevant planning condition, which means development cannot lawfully commence (or continue, if a post-commencement condition is involved).

Consequences include:

• Planning condition remains undischarged; development is unlawful if commenced
• Enforcement action by the local planning authority, including stop notices
• Potential requirement to restore habitat damaged during any unlawful works
• Reputational and financial risk, particularly for developers with lenders requiring planning compliance sign-off

There is no financial penalty structure equivalent to, say, CIL non-payment, but the practical consequence of being unable to start or complete a development is severe. Statutory credits exist precisely to ensure there is always a route to compliance, even if an expensive one.

Practical Action Steps for Developers Submitting After 31 July 2026

For any application submitted from August 2026 onwards, apply these steps:

1. Check site area first. If the site is 0.2 ha or less, confirm the small-site exemption applies and document this in the application.
2. Check development duration. If temporary permission of up to five years is sought, confirm the temporary-development exemption applies.
3. Remove self-build exemption assumptions. If the project is self-build on a site above 0.2 ha, budget for full BNG compliance.
4. Apply the revised hierarchy for non-major development. Explore on-site creation and registered off-site units simultaneously; you are no longer required to exhaust on-site options first.
5. Use the current DEFRA biodiversity metric. Confirm the version number with your ecologist before submission.
6. Budget for statutory credits only as a contingency. At £42,000 to approximately £650,000 per unit, statutory credits should appear in the project risk register, not the base cost plan.
7. Register off-site units before relying on them. Confirm registration status on the biodiversity gain sites register before including them in your biodiversity gain plan.
8. Engage Natural England early if statutory credits look likely, to avoid delays in credit certificate issuance.

FAQ

Q: What is the cheapest BNG statutory credit available in 2026?
The cheapest statutory credit is approximately £42,000 per unit, applicable to lower-distinctiveness habitat types. Prices rise significantly for more ecologically valuable habitats, reaching approximately £650,000 for intertidal and saltmarsh credits (GOV.UK statutory credit pricing schedule).

Q: Are statutory credits the same as biodiversity units from a habitat bank?
No. Statutory credits are government-issued and purchased from Natural England as a last resort. Private biodiversity units are sold by landowners operating registered habitat bank sites. Private units are preferred in the hierarchy and are typically cheaper than statutory credits.

Q: Does the 0.2 ha small-site exemption apply to the building footprint or the whole site?
It applies to the total site area, not just the building footprint. A development with a small building on a larger plot above 0.2 ha does not qualify for the exemption.

Q: Has the self-build exemption been extended or just removed?
It has been removed entirely from 6 August 2026. Self-build and custom-build projects on sites above 0.2 ha must now comply with mandatory BNG in the same way as any other residential development.

Q: Can a developer use statutory credits for part of their BNG requirement and off-site units for the rest?
Yes, in principle. Statutory credits can be used to cover any residual shortfall that cannot be met through on-site creation or registered off-site units. A mixed approach is permissible provided the statutory credit portion is genuinely a last resort.

Q: Where can I find the DEFRA BNG statutory credits report for 2025-2026?
The report is published by DEFRA and Natural England on GOV.UK. Search for "BNG statutory credits report" on GOV.UK to locate the most current version.

Conclusion

The BNG Statutory Credits Report 2025-2026 UK developers August 2026 confirms that the statutory credit mechanism is functioning as intended: low uptake (approximately £426,100 in total payments) reflects a market where most developers are successfully sourcing biodiversity units through on-site creation and the private habitat bank market, rather than resorting to the government backstop.

The 6 August 2026 regulatory changes add meaningful nuance. The small-site exemption at 0.2 ha and the temporary-development exemption will reduce the compliance burden for many smaller schemes, while the removal of the self-build exemption closes a route that had been used to avoid BNG obligations. The relaxed hierarchy for non-major development is a practical improvement that reduces the evidential burden on smaller developers.

For any application submitted after 31 July 2026, the action is clear: verify exemption status first, apply the revised hierarchy, engage an ecologist early, and treat statutory credits as a financial risk to be managed rather than a routine procurement option. At up to £650,000 per unit for the most sensitive habitats, the cost of leaving BNG compliance to the last minute is substantial.

Meta title: BNG Statutory Credits Report 2025-2026: UK Developer Guide

Meta description: The DEFRA BNG Statutory Credits Report 2025-2026 shows £426,100 in payments. Learn what the August 2026 rule changes mean for UK developers, costs, and compliance steps.

Tags: BNG statutory credits, biodiversity net gain, DEFRA BNG report, Natural England, UK planning 2026, habitat banking, BNG compliance, small-site exemption, biodiversity gain hierarchy, BNG August 2026, UK property developers, ecological planning

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