A NSW Government website

Supply Fund and credit purchasing

Find information about the Supply Fund, reverse auction dates and participation, and how to buy or sell biodiversity credits through the Supply Fund.


Reverse auction status

The latest reverse auction closed on the 10 July 2024.

Reverse auction results and information about future auctions are published on this webpage.

About the 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

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

Targeted reverse auction results

The targeted reverse auction closed on Monday 13 May 2024 and received 8 bids covering more than 700 credits.

This reverse auction sought bids for a limited number of ecosystem credit types that were issued and available for purchase by June 2024 in the Cumberland IBRA (Interim Biogeographic Regionalisation for Australia) sub-region.

Bids were evaluated in accordance with the published auction documentation and more than 240 credits have been approved for purchase, totalling around $9 million, covering:

  • Cumberland Plain Woodland in the Sydney Basin Bioregion
  • Cooks River/Castlereagh Ironbark Forest in the Sydney Basin Bioregion.

February 2024 reverse auction results

The February 2024 auction closed on 6 March 2024 and received 83 bids covering more than 74,000 credits.

Bids were evaluated in accordance with the published auction documentation and more than 11,000 credits have been approved for purchase, totalling around $20 million, covering:

  • Coastal Upland Swamp
  • Coastal Valley Grassy Woodlands
  • Cumberland Plain Woodland
  • Freshwater Wetlands on Coastal Floodplains
  • Hunter Lowland Redgum Forest
  • Hunter-Macleay Dry Sclerophyll Forests
  • Illawarra Subtropical Rainforest
  • Inland Riverine Forests
  • Littoral Rainforest
  • Montane Bogs and Fens
  • North Coast Wet Sclerophyll Forests
  • Northern Hinterland Wet Sclerophyll Forests
  • North-west Floodplain Woodlands
  • South-east Dry Sclerophyll Forests
  • Southern Tableland Dry Sclerophyll Forests
  • Subalpine Woodlands
  • Subtropical Coastal Floodplain Forest
  • Swamp Oak Floodplain Forest
  • Sydney Coastal Dry Sclerophyll Forests
  • Sydney Turpentine-Ironbark Forest
  • Upper Riverina Dry Sclerophyll Forests
  • Western Peneplain Woodlands
  • Western Slopes Dry Sclerophyll Forests
  • White Box – Yellow Box – Blakely's Red Gum Grassy Woodland
  • threatened plants: hoary sunray, netted bottle brush, silky swainson-pea, small purple-pea and Tetratheca glandulosa
  • threatened animals: barking owl, brush-tailed phascogale, common planigale, eastern cave bat, eastern pygmy possum, greater glider, green and golden bell frog, green-thighed frog, large bent-winged bat, large-eared pied bat, long-nosed potoroo, masked owl, parma wallaby, pink-tailed legless lizard, powerful owl, red-crowned toadlet, regent honeyeater, rufous bettong, squirrel glider, wallum froglet.

The Taskforce provides feedback on credits not being purchased, and offers opportunities to promote credits for sale through the Biodiversity Credits Catalogue.