Reverse auction status
The latest reverse auction closed on Wednesday 17 September 2025.
Reverse auction outcomes and information about future auctions are published on this webpage.
About the Biodiversity Credit Supply Fund
The Biodiversity Credit Supply Fund (the supply fund) buys credits based on demand from development and infrastructure projects. Credits are then sold to public or private sector proponents who need credits to offset the biodiversity impacts of their projects, or other buyers who may seek credits for philanthropic or strategic purposes.
The supply fund is operated by the Department of Climate Change, Energy, the Environment and Water with the aim of making credits easier to sell and buy, improving the functioning of the biodiversity market. The department will apply fair, transparent and ethical processes and decision-making when buying and selling credits through the supply fund.
Biodiversity credits are generated through biodiversity stewardship agreements. The sale of credits provides funding for landholders to improve the management of pests, weeds and fire and restore habitat.
Operating Protocol
The Operating Protocol document sets out how the supply fund operates. It covers governance, ways to identify demand and supply, methods for buying and selling credits, and monitoring and reporting.
Download: Biodiversity Credits Supply Fund – Operating Protocol
Biodiversity Credit Supply Fund market update
The supply fund market update covers key outcomes from the supply fund's reverse auctions, how auctions are run, the supply fund's role in the market, and information on credits approved for purchase by the supply fund. This is part of regular reporting to support development of the biodiversity credits market and promote understanding of the supply fund.
Download: Biodiversity Credits Supply Fund market update
The department provides feedback and suggestions to landholders on how to best sell their credits. This includes offering opportunities to promote credits for sale through other channels, such as the Biodiversity Credits Catalogue.
August 2025 state-wide reverse auction results
The August 2025 state-wide reverse auction closed on 17 September 2025 and received 216 bids. Bids were evaluated in accordance with auction documentation and 1.1 million credits were approved across 215 credit types, subject to buyer confirmation.
The department will seek buyers for the approved credits for the next six months. The credit types approved through the auction are listed below. If you are interested in buying credits, contact [email protected] for more information.
Ecosystem credits – threatened ecological communities (TECs)
- Brigalow-Gidgee woodland/shrubland in the Mulga Lands and Darling Riverine Plains Bioregions
- Carex Sedgeland of the New England Tableland, Nandewar, Brigalow Belt South and NSW North Coast Bioregions
- Central Hunter Grey Box-Ironbark Woodland in the NSW North Coast and Sydney Basin Bioregions
- Cooks River/Castlereagh Ironbark Forest in the Sydney Basin Bioregion
- Coolibah-Black Box Woodland in the Darling Riverine Plains, Brigalow Belt South, Cobar Peneplain and Mulga Lands Bioregions
- Cumberland Plain Woodland in the Sydney Basin Bioregion
- Freshwater Wetlands on Coastal Floodplains of the NSW North Coast, Sydney Basin and South East Corner Bioregions
- Fuzzy Box Woodland on alluvial Soils of the South Western Slopes, Darling Riverine Plains and Brigalow Belt South Bioregions
- Howell Shrublands in the New England Tableland and Nandewar Bioregions
- Hunter Valley Vine Thicket in the NSW North Coast and Sydney Basin Bioregions
- Inland Grey Box Woodland in the Riverina, NSW South Western Slopes, Cobar Peneplain, Nandewar and Brigalow Belt South Bioregions
- Littoral Rainforest in the NSW North Coast, Sydney Basin and South East Corner Bioregions
- Lower Hunter Valley Dry Rainforest in the Sydney Basin and NSW North Coast Bioregions
- Lowland Rainforest in the NSW North Coast and Sydney Basin Bioregions
- Monaro Tableland Cool Temperate Grassy Woodland in the South Eastern Highlands Bioregion
- Montane Peatlands and Swamps of the New England Tableland, NSW North Coast, Sydney Basin, South East Corner, South Eastern Highlands and Australian Alps Bioregions
- Myall Woodland in the Darling Riverine Plains, Brigalow Belt South, Cobar Peneplain, Murray-Darling Depression, Riverina and NSW South Western Slopes Bioregions
- New England Peppermint (Eucalyptus nova-anglica) Woodland on Basalts and Sediments in the New England Tableland Bioregion
- Ribbon Gum-Mountain Gum-Snow Gum Grassy Forest/Woodland of the New England Tableland Bioregion
- River-Flat Eucalypt Forest on Coastal Floodplains of the NSW North Coast, Sydney Basin and South East Corner Bioregions
- Sandhill Pine Woodland in the Riverina, Murray-Darling Depression and NSW South Western Slopes bioregions
- Semi-evergreen Vine Thicket in the Brigalow Belt South and Nandewar Bioregions
- Shale Sandstone Transition Forest in the Sydney Basin Bioregion
- Subtropical Coastal Floodplain Forest of the NSW North Coast Bioregion
- Swamp Oak Floodplain Forest of the NSW North Coast, Sydney Basin and South East Corner Bioregions
- Swamp Sclerophyll Forest on Coastal Floodplains of the NSW North Coast, Sydney Basin and South East Corner Bioregions
- Sydney Turpentine-Ironbark Forest in the Sydney Basin Bioregion
- Werriwa Tablelands Cool Temperate Grassy Woodland in the South Eastern Highlands and South East Corner Bioregions
- Western Sydney Dry Rainforest in the Sydney Basin Bioregion
- White Box-Yellow Box-Blakely's Red Gum Grassy Woodland and Derived Native Grassland.
Ecosystem credits – non-TECs
- Alpine Heaths less than 50%
- Alpine Herbfields less than 50%
- Brigalow Clay Plain Woodlands greater than or equal to 70% and less than 90%
- Central Gorge Dry Sclerophyll Forests less than 50%
- Central Gorge Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Clarence Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Coastal Floodplain Wetlands less than 50%
- Coastal Valley Grassy Woodlands greater than or equal to 50% and less than 70%
- Coastal Valley Grassy Woodlands greater than or equal to 70% and less than 90%
- Dry Rainforests less than 50%
- Dry Rainforests greater than or equal to 50% and less than 70%
- Eastern Riverine Forests less than 50%
- Eastern Riverine Forests greater than or equal to 50% and less than 70%
- Eastern Riverine Forests greater than or equal to 70% and less than 90%
- Floodplain Transition Woodlands greater than or equal to 70% and less than 90%
- Hunter-Macleay Dry Sclerophyll Forests less than 50%
- Hunter-Macleay Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Hunter-Macleay Dry Sclerophyll Forests greater than or equal to 70% and less than 90%
- Inland Floodplain Shrublands less than 50%
- Inland Floodplain Swamps less than 50%
- Inland Floodplain Swamps greater than or equal to 50% and less than 70%
- Inland Floodplain Swamps greater than or equal to 70% and less than 90%
- Inland Floodplain Woodlands greater than or equal to 50% and less than 70%
- Inland Riverine Forests less than 50%
- Inland Riverine Forests greater than or equal to 50% and less than 70%
- Inland Rocky Hill Woodlands less than 50%
- Inland Rocky Hill Woodlands greater than or equal to 50% and less than 70%
- Montane Bogs and Fens less than 50%
- Montane Wet Sclerophyll Forests less than 50%
- New England Dry Sclerophyll Forests less than 50%
- New England Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- New England Dry Sclerophyll Forests greater than or equal to 70% and less than 90%
- New England Grassy Woodlands less than 50%
- New England Grassy Woodlands greater than or equal to 50% and less than 70%
- New England Grassy Woodlands greater than or equal to 70% and less than 90%
- North Coast Dry Sclerophyll Forests less than 50%
- North Coast Wet Sclerophyll Forests less than 50%
- North Coast Wet Sclerophyll Forests greater than or equal to 50% and less than 70%
- North Coast Wet Sclerophyll Forests greater than or equal to 70% and less than 90%
- Northern Escarpment Dry Sclerophyll Forests less than 50%
- Northern Gorge Dry Sclerophyll Forests less than 50%
- Northern Hinterland Wet Sclerophyll Forests less than 50%
- Northern Hinterland Wet Sclerophyll Forests greater than or equal to 50% and less than 70%
- Northern Montane Heaths less than 50%
- Northern Montane Heaths greater than or equal to 70% and less than 90%
- Northern Tableland Dry Sclerophyll Forests less than 50%
- Northern Tableland Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Northern Tableland Wet Sclerophyll Forests less than 50%
- Northern Tableland Wet Sclerophyll Forests greater than or equal to 50% and less than 70%
- Northern Warm Temperate Rainforests less than 50%
- North-west Alluvial Sand Woodlands greater than or equal to 50% and less than 70%
- North-west Floodplain Woodlands greater than or equal to 70% and less than 90%
- North-west Plain Shrublands greater than or equal to 50% and less than 70%
- North-west Slopes Dry Sclerophyll Woodlands less than 50%
- North-west Slopes Dry Sclerophyll Woodlands greater than or equal to 50% and less than 70%
- North-west Slopes Dry Sclerophyll Woodlands greater than or equal to 70% and less than 90%
- Pilliga Outwash Dry Sclerophyll Forests less than 50%
- Pilliga Outwash Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Riverine Chenopod Shrublands greater than or equal to 50% and less than 70%
- Riverine Plain Grasslands greater than or equal to 50% and less than 70%
- Riverine Plain Grasslands greater than or equal to 70% and less than 90%
- Semi-arid Floodplain Grasslands greater than or equal to 70% and less than 90%
- South East Dry Sclerophyll Forests less than 50%
- South East Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Southern Escarpment Wet Sclerophyll Forests less than 50%
- Southern Lowland Wet Sclerophyll Forests less than 50%
- Southern Montane Heaths less than 50%
- Southern Tableland Dry Sclerophyll Forests less than 50%
- Southern Tableland Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Southern Tableland Dry Sclerophyll Forests greater than or equal to 70% and less than 90%
- Southern Tableland Dry Sclerophyll Forests greater than or equal to 90%
- Southern Tableland Grassy Woodlands greater than or equal to 50% and less than 70%
- Southern Tableland Grassy Woodlands greater than or equal to 90%
- Southern Tableland Wet Sclerophyll Forests less than 50%
- Southern Tableland Wet Sclerophyll Forests greater than or equal to 50% and less than 70%
- Subalpine Woodlands less than 50%
- Subalpine Woodlands greater than or equal to 50% and less than 70%
- Subalpine Woodlands greater than or equal to 90%
- Subtropical Rainforests less than 50%
- Subtropical Rainforests greater than or equal to 50% and less than 70%
- Sydney Coastal Dry Sclerophyll Forests less than 50%
- Sydney Hinterland Dry Sclerophyll Forests less than 50%
- Sydney Hinterland Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Sydney Montane Dry Sclerophyll Forests less than 50%
- Sydney Montane Heaths less than 50%
- Sydney Sand Flats Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Tableland Clay Grassy Woodlands greater than or equal to 50% and less than 70%
- Tableland Clay Grassy Woodlands greater than or equal to 70% and less than 90%
- Tableland Clay Grassy Woodlands greater than or equal to 90%
- Upper Riverina Dry Sclerophyll Forests less than 50%
- Upper Riverina Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Upper Riverina Dry Sclerophyll Forests greater than or equal to 70% and less than 90%
- Wallum Sand Heaths greater than or equal to 70% and less than 90%
- Western Peneplain Woodlands less than 50%
- Western Peneplain Woodlands greater than or equal to 50% and less than 70%
- Western Slopes Dry Sclerophyll Forests less than 50%
- Western Slopes Dry Sclerophyll Forests greater than or equal to 50% and less than 70%
- Western Slopes Grasslands greater than or equal to 90%
- Western Slopes Grassy Woodlands less than 50%
- Western Slopes Grassy Woodlands greater than or equal to 50% and less than 70%
- Western Slopes Grassy Woodlands greater than or equal to 70% and less than 90%.
Species credits – fauna
- Alpine she-oak skink
- Alpine tree frog
- Alpine water skink
- Barking owl
- Border thick-tailed gecko
- Broad-headed snake
- Broad-toothed rat
- Brush-tailed phascogale
- Brush-tailed rock-wallaby
- Bush stone-curlew
- Common planigale
- Cumberland plain land snail
- Eastern cave bat
- Eastern osprey
- Eastern pygmy-possum
- Gang-gang cockatoo
- Green and golden bell frog
- Green-thighed frog
- Key’s matchstick grasshopper
- Koala
- Large bent-winged bat
- Large-eared pied bat
- Latham's snipe
- Little eagle
- Masked owl
- Monaro grassland earless dragon
- Northern long-nosed potoroo
- Pale-headed snake
- Parma wallaby
- Pink-tailed legless lizard
- Powerful owl
- Red-crowned toadlet
- Regent honeyeater
- Rufous bettong
- Sooty owl
- South-eastern glossy black-cockatoo
- Southern greater glider
- Southern myotis
- Sphagnum frog
- Squirrel glider
- Stephens' banded snake
- Stuttering frog
- Superb parrot
- Wallum froglet
- Yellow-bellied glider population on the Bago Plateau.
Species credits – flora
- Bluegrass
- Bordered guinea flower
- Brandy Mary's leek orchid
- Brown pomaderris
- Capertee stringybark
- Commersonia procumbens
- Creeping tick-trefoil
- Cymbidium canaliculatum population in the Hunter catchment
- Cyperus conicus
- Fairy bells
- Finger panic grass
- Granite homoranthus
- Hairy geebung
- Hoary sunray
- Juniper-leaved grevillea
- Keith's zieria
- Lanky buttons
- Matted bush-pea
- Mauve burr-daisy
- Ozothamnus tesselatus
- Pale pomaderris
- Perisher wallaby-grass
- Pine donkey orchid
- Pterostylis chaetophora
- Pterostylis ventricosa
- Raleigh sedge
- Scant pomaderris
- Silky Swainson-pea
- Singleton mint bush
- Slender darling pea
- Small purple-pea
- Square raspwort
- Superb midge orchid
- Tetratheca glandulosa
- Tiger orchid
- Tylophora linearis
- White-flowered wax plant
- White-footed dunnart
- Yass daisy.