UNEP estimates developing countries will need about $305 billion annually for adaptation by 2035, largely excluding private-sector needs that could nearly double the total.
Developed-country public flows reached $28.2–31.7 billion in 2024, only $1 billion more than a year earlier and roughly one tenth of estimated needs.
Tripling finance to $85–120 billion by 2035 would cover only 20–29% after inflation; coverage for least developed and island states could reach 49–83%.
MDB and South-South flows rose from $3.8 billion in 2019 to $9.6 billion in 2024, but private finance cannot replace public systems without commercial returns.
The loss-and-damage fund received $2.8 billion in first-round requests against a $342 million envelope, illustrating unmet demand rather than a complete global gap estimate.
Money also needs laws, local capacity, data, coordination and community participation. Poorly designed projects can shift risk or deepen debt instead of resilience.
COP31 must address predictable, accessible finance and track actual vulnerability reduction. Tripling is a political floor, not a sufficient solution.
