cOAlition S funders are the roughly two-dozen national research funders, charitable foundations and international bodies — including UKRI, Wellcome Trust, the Swiss National Science Foundation and the European Commission — that publicly endorsed Plan S in 2018 and continue to require immediate, CC BY open access from their grant recipients. Not every major funder stayed the course: the Gates Foundation has diverged toward a preprint-first model, and the European Research Council, Sweden’s Riksbankens Jubileumsfond and India’s national funders withdrew or declined to join outright.
cOAlition S is the funder consortium — not a legal entity but a voluntary alliance of research-funding and research-performing organisations — that created and continues to steward Plan S, the 2018 open-access mandate requiring full and immediate public access to publications arising from the funding it provides. This guide sets out exactly who is in that coalition today, who has left, and what that split means for grants administrators trying to work out which awards trigger Plan S compliance obligations.
What is cOAlition S and who funds it?
cOAlition S launched on 4 September 2018 when a group of eleven national research funding organisations, coordinated through Science Europe, announced a “collective declaration of commitment” to mandate open access from 1 January 2020. The coalition has since grown to include national funders across Europe, Africa and the Middle East, several of the world’s largest biomedical and scientific charities, and formal support from the European Commission and the World Health Organization.
Membership is not static. Funders join, adjust their policies, or step away as their own institutional priorities and legal constraints evolve — which is exactly why a periodically-updated reference list, rather than a single static claim, is the useful format for this question.
Which funders currently back Plan S?
cOAlition S’s own organisations page groups its supporters into national funders, charitable and international funders, and European funders (including the European Commission). Based on cOAlition S’s published membership record and the sourced Wikipedia membership history, the coalition’s core currently includes the following.
- National research funders: UK Research and Innovation (UKRI); Austrian Science Fund (FWF); France’s Agence Nationale de la Recherche (ANR); Science Foundation Ireland (SFI); Istituto Nazionale di Fisica Nucleare (INFN, Italy); Luxembourg National Research Fund (FNR); Netherlands Organisation for Scientific Research (NWO); Research Council of Norway (RCN); National Science Centre, Poland (NCN); Fundação para a Ciência e a Tecnologia (FCT, Portugal); Slovenian Research Agency (ARRS); Swedish Research Council for Sustainable Development (Formas), Forte and Vinnova; Swiss National Science Foundation (SNSF); Academy of Finland; National Health and Medical Research Council (NHMRC, Australia); South African Medical Research Council (SAMRC); Jordan’s Higher Council for Science and Technology; and Zambia’s National Science and Technology Council.
- Charitable and international funders: Wellcome Trust; the Bill & Melinda Gates Foundation (with a materially diverged policy — see below); the Howard Hughes Medical Institute (HHMI); Templeton World Charity Foundation; and Aligning Science Across Parkinson’s (ASAP).
- Institutional and multilateral support: the European Commission, which funds Horizon Europe on Plan S-aligned open-access terms, and the World Health Organization.
cOAlition S publishes this list as a live, JavaScript-rendered directory rather than a static page, so administrators verifying a specific funder’s status should cross-check coalition-s.org/organisations directly rather than relying solely on any single secondary source, including this one.
Which funders have left or diverged from Plan S?
Three organisations have formally withdrawn from or declined to join cOAlition S, and one major member has substantially diverged from the original Plan S model while remaining nominally affiliated.
| Funder | Status | What changed |
|---|---|---|
| Bill & Melinda Gates Foundation | Member, policy diverged | 2024 “preprint-centric” policy took effect January 2025; the foundation stopped paying article processing charges (APCs) and instead requires a preprint at or before formal publication, rather than mandating immediate open access to the accepted manuscript itself. |
| European Research Council (ERC) | Withdrew, July 2020 | Supported the initiative from 2018 but its Scientific Council withdrew, citing concerns that Plan S’s implementation was too restrictive for early-career researchers and limited publication-venue choice. |
| Riksbankens Jubileumsfond (RJ), Sweden | Left, 2019 | An early signatory that withdrew citing concerns over the implementation timeline. |
| India (national funders) | Declined to join, October 2019 | Principal Scientific Adviser Vijay Raghavan announced India would pursue its own national open-access policy rather than sign on to cOAlition S. |
The Gates Foundation case is the one administrators most often ask about, because Gates remains publicly associated with the open-access movement while its funding terms have moved furthest from the original Plan S template. Its 2024 policy refresh, reported by Nature in April 2024, replaced APC funding with a preprint-first requirement — a shift toward green, repository-based access rather than the gold, journal-published-and-APC-funded model Plan S initially popularised. Wellcome Trust, by contrast, has kept its CC BY, zero-embargo requirement fully aligned with Plan S principles and remains a full cOAlition S member.
How does this affect grant compliance for administrators?
For research administrators, the practical question is rarely “is my institution generally Plan S-aligned” — it is “does this specific grant trigger Plan S obligations.” That depends entirely on the funder listed on the award, not on the institution or the discipline.
- A UKRI, Wellcome, SNSF, NWO or European Commission (Horizon Europe) grant carries a live Plan S-style requirement: immediate, CC BY, zero-embargo open access to the peer-reviewed manuscript, with rights retention where the funder has adopted that strategy.
- A Gates Foundation grant awarded or renewed after January 2025 requires a preprint at or before publication, but no longer carries a guaranteed APC payment — so budgeting APCs into a Gates-funded proposal on the old assumption will leave a funding gap.
- An ERC (Horizon Europe) grant sits in a genuinely mixed position: the ERC itself withdrew cOAlition S support in 2020, but ERC grants are still funded under Horizon Europe, which the European Commission administers on Plan S-aligned terms — so the operative obligation traces to the Commission’s rules, not the ERC’s own institutional stance.
- A grant from a funder never affiliated with cOAlition S (most US federal agencies, most Indian national funders) should be checked against that funder’s own policy rather than assumed to follow Plan S at all.
The single most reliable compliance step is to check the specific funder named on the award letter against cOAlition S’s current organisations list and that funder’s own most recent policy document, rather than relying on institutional memory of what a funder required in 2019 or 2020.
Frequently asked questions
Has the Gates Foundation left cOAlition S?
No. The Gates Foundation remains formally affiliated with cOAlition S, but its 2024 policy refresh — effective January 2025 — dropped APC funding in favour of a preprint-first requirement, moving its practical terms away from the original Plan S model without a formal exit.
Is Wellcome Trust still part of Plan S?
Wellcome Trust is a founding cOAlition S member and remains fully aligned with Plan S: its open-access policy requires immediate deposit of the peer-reviewed manuscript under a CC BY licence with no embargo, matching the original 2018 mandate.
Why did the European Research Council withdraw from cOAlition S?
The European Research Council backed the initiative in 2018 but its Scientific Council withdrew support in July 2020, stating that Plan S’s implementation guidance was too restrictive, particularly for early-career researchers‘ choice of publication venue.
Where can I find the full, current list of cOAlition S funders?
cOAlition S publishes its authoritative, continuously updated member list at coalition-s.org/organisations, grouped into national funders, charitable and international funders, and European funders — administrators should treat that page, not older news coverage, as the source of record.
Implications and outlook
cOAlition S was never designed as a fixed, closed membership — it is a voluntary coalition that funders join and leave as their institutional strategies evolve. The Gates Foundation’s shift toward a preprint-centric model is the most consequential recent change because it signals that even committed founding-era supporters are questioning APC-funded gold open access as the default route, in favour of greener, lower-cost alternatives. For institutions with active research administration functions, the practical takeaway is to treat “is this funder in cOAlition S” as a per-grant lookup rather than a one-time institutional assumption, and to revisit that lookup whenever a funder announces a policy refresh.
