The proposed budget for the biennium 2026–2027 has been prepared in accordance with decision 19/CP.28, which stipulates that the core budget should include all category 1 (essential) and category 2 (long-term and recurring) activities mandated by Parties. It also responds to the Board of Auditors, who found that increased dependence on supplementary funding presents operational challenges for the UNFCCC secretariat. Further, the proposed budget incorporates solutions to structural challenges and enables increases in operational efficiency, all while lowering costs.

In preparing the budget, the secretariat engaged with Parties throughout the process to receive their guidance. Consultations included a briefing convened by the SBI Chair for heads of delegation during COP 29, two virtual briefings that took place in March 2025 and bilateral consultations. Engagement with Parties will continue ahead of SB 62. Further details will be announced.