Contributions to GCF are facilitated through Contribution Agreements or Arrangements signed by contributors, GCF, and the Trustee, which is the existing mechanism for receiving contributions to the Trust Fund.

This arrangement was signed between the United Kingdom, GCF, and the World Bank in April 2015, for contributions made at the Initial Resource Mobilisation (IRM) period. Amendments to the agreement were made in December 2016, December 2017 and March 2018.