Refunds are processed by Fiscal Host administrators. If you are not the admin, contact your fiscal host (or Open Collective support if your host is managed by Open Collective).

To refund a donation as a Fiscal Host admin:

Go to the Collective page and head to the Budget section.
Click on the Transactions Tab and then View all transactions.
Find the transaction you want to refund on the list and click on View Details.
You will find a refund button right next to the transaction details.
Click on it and confirm the operation.