Buying CDRCs
Last updated 3 November 2025
If there aren't any CDRCs available for sale in the BidCarbon marketplace, certificates are substituted with 'Operating Companies created CDRCs' for buyers to purchase. These CDRCs can be traded and surrendered as ordinary CDRCs.
Payment must be received in full before CDRC's are released from the BidCarbon marketplace.
Once payments are cleared, we settle the purchase and CDRCs are transferred into the buyers BUC Registry account.
The BidCarbon removal units (BRUs) within those CDRCs are then retired from the BidCarbon Units and Certificates (BUC) registry.
Therefore, retirement of a BRUs indicates that it has been utilised and is no longer available for sale or trade on the carbon market.
How to buying CDRCs
The BidCarbon marketplace is a facility within the BUC Registry that supports holders of carbon data rights certificates and entities buying and selling CDRCs at a fixed price.
Depending on demand, CDRCs may join the BidCarbon marketplace transfer list if there are more sellers than buyers. This is a first-in-first-served system, the latest offers are added to the bottom of the list.
The status of the BidCarbon marketplace transfer list is available in the BUC Registry and updated hourly.
Read our BidCarbon marketplace operations guidance.
Learn more
Market infrastructure
We are committed to maintaining the integrity of the market and to providing participants with the resources they need to understand the BidCarbon marketplace.
Applying for carbon data rights certificates
Learn how to apply for a carbon data rights certificate to sell your BRUs.
Voluntary offsetting
BidCarbon removal units are used to measure and trade greenhouse gas emissions globally. Learn more about purchasing and cancel BidCarbon removal units, when you aren't legally required to do so.
Learn more
HELPFUL LINKS FOR
TM