The Net-Zero Banking Alliance voted on 3 October 2025 to cease operations, bringing to a close the United Nations-backed initiative that had once assembled more than 140 banks in a shared commitment to align their lending and investment portfolios with net-zero emissions pathways. The dissolution made NZBA the second UN-supported industry climate group to wind down in 2025, a development that marks a significant contraction in the multilateral institutional infrastructure designed to co-ordinate climate action across the global banking sector.
The vote followed a wave of departures that progressively hollowed out the alliance's membership and eroded its claim to represent mainstream banking practice. US banks led the exodus, and their withdrawals reduced American coverage within the alliance from 44.6 per cent of total US banking assets to just 0.045 per cent — a collapse in representation so stark that the alliance could no longer credibly present itself as encompassing the American financial system in any meaningful way. European institutions subsequently followed suit, leaving a rump membership that ultimately concluded the alliance was no longer viable in its existing form.
FROM 140-BANK PEAK TO WIND-DOWN
At its peak following its launch in 2021, NZBA attracted more than 140 member banks, a figure that gave it the appearance of genuine industry-wide consensus on climate action. The alliance required members to set intermediate and long-term targets to reduce the carbon intensity of their lending portfolios, with third-party accountability mechanisms intended to guard against greenwashing. For several years it served as the principal forum through which banks publicly signalled their commitment to the goals of the Paris Agreement and to the broader UN climate agenda.
The US bank departures proved decisive for the alliance's trajectory. As American institutions withdrew — citing concerns about legal exposure under domestic antitrust frameworks and shifting political attitudes towards environmental, social, and governance commitments at the federal level — the alliance lost the institutional mass that had underpinned its global relevance. The near-total collapse of US banking assets within the membership transformed NZBA from a global initiative into something far more limited in scope, reducing its leverage over the banks and markets it had sought to influence.
PROPOSED TRANSFORMATION CAME TOO LATE
In August 2025, ahead of the member vote, NZBA had put forward a proposal to transform itself from a membership-based body into a framework initiative, a structural change designed to preserve some form of collective climate commitment without the binding obligations that had driven banks to exit. The proposal did not attract sufficient support to prevent the wind-down vote from proceeding in October, and the remaining members ultimately concluded that dissolution was the more appropriate response to the scale of the losses the organisation had experienced.
The closure raises substantive questions about how the banking sector will organise any form of collective action on climate finance in the absence of NZBA and its predecessor and sibling UN-backed initiatives. Individual banks retain their own net-zero pledges, and various national and regional sustainable finance forums continue to operate. However, the collapse of the alliance removes a prominent multilateral structure that had been designed to set consistent benchmarks, facilitate peer accountability, and signal to policymakers that the global banking industry was engaging collectively with the transition to a lower-carbon economy.