WHO's new budget is smaller, and the US exit cut $311 million from it

The Seventy-eighth World Health Assembly approved a programme budget of US$6206.7 million for 2026-2027, under all sources of funds, in resolution WHA78.2 on 27 May [s1]. The number is smaller than what WHO first proposed, and the resolution itself records why part of the gap opened: the notified withdrawal of the United States from the organisation provisionally cut the assessed contributions available to run the budget by US$311.1 million [s1].

A budget cut before it was approved

The Secretariat had already reduced its ambition before the Assembly voted. WHO's proposed budget document notes that "the overall budget envelope for 2026-2027 has been revised from the initial US$5.3 billion presented to the Executive Board to US$4.2 billion in the current version," a revision it attributes to "significant changes in the global financing landscape" after the Executive Board met in early 2025 [s2]. Countries were then "invited to revisit their prioritization to reflect evolving funding realities" [s2].

The approved base segment came in at US$4267.1 million, split across the five goals of WHO's Fourteenth General Programme of Work: US$399.9 million to promote health, US$1787.8 million to provide health, US$918.5 million to protect health, US$577.2 million to power the global health agenda and US$583.7 million to optimise WHO's performance [s1]. On top of the base sit three separately financed areas: polio eradication at US$770.9 million, special programmes at US$168.7 million, and emergency operations and appeals at an estimated US$1000.0 million, a figure the resolution notes can rise with events [s1].

Where the US exit lands

WHO is funded from two very different streams: assessed contributions, the dues member states owe, and voluntary contributions, largely earmarked donations from governments and philanthropies. The resolution sets net assessments on member states at US$1377.9 million, then provisionally decreases that by US$311.1 million "reflecting, but not prejudging, the notified withdrawal of the United States of America," leaving total estimated assessments available for implementation of US$1066.8 million [s1]. The proposed-budget document, written a fortnight earlier, put assessed contributions after the withdrawal at US$1074.7 million [s2]. Either way, assessed dues cover only a sliver of the budget; voluntary contributions are set at US$5139.9 million, more than four-fifths of the total [s1].

That imbalance is the structural problem the numbers expose. A budget dominated by earmarked voluntary money is one WHO controls less directly, and the assessed portion — the flexible, predictable core the organisation's own sustainable-financing reforms, adopted in 2022, were meant to grow — is what the US departure shrinks [s1]. The proposed budget is candid that even the reduced envelope is not fully funded: against the US$4.2 billion base it shows a "current funding gap" of US$1649 million once assessed contributions, funds from existing agreements and expected pipeline income are counted [s2]. It also warns that in the current "financial environment, closing the remaining funding gap for 2026-2027 will likely be more challenging than it has been in previous bienniums" [s2].

Rationing by priority

The reduction is not only a smaller total but a reordered one. WHO says the revision prompted a fresh prioritisation exercise across its country, regional and headquarters levels, run through what the proposed budget calls a "three-level Resource Allocation Committee" intended to make the split of money more transparent [s2]. The resolution frames the same discipline forward: it authorises spending "subject to the availability of resources," and its allocation to the five goals is explicitly the order in which a constrained organisation says it will fund its work [s1]. In a biennium where the money is not guaranteed to arrive, that ranking, rather than the headline total, is what determines which programmes hold.

What it means, and what to watch

None of this is a forecast of collapse. WHO approved a real budget, kept its Working Capital Fund at US$31.0 million, and authorised the Director-General to move up to 5% between goals as income arrives [s1]. But the arithmetic sets the terms for the biennium: a smaller programme, a large unfunded gap at the base, and a heavier reliance on voluntary money after the single largest assessed contributor gave notice to leave. The separate question of what the United States does with its own global health appropriations is playing out in the US Congress, not in Geneva. What the Assembly settled here is the size of the institution the rest of the world's health agenda runs through, and it is smaller than it was.