cOAlition S’s 2026–2030 strategy, published 12 November 2025, confirms that transformative agreements no longer sit at the centre of its open access policy: funders will not fund new transformative agreements by default (a position effective since 2025), and the coalition is redirecting policy attention and infrastructure investment toward diamond open access, preprints, and publish-review-curate models. For library consortia and research offices still budgeting around read-and-publish renewals, this is the point at which planning assumptions need to change.
A transformative agreement is a contract negotiated between a library, national consortium, or regional grouping and a publisher that repurposes former subscription spending into payment for open access publishing services, intended as a temporary bridge from subscription access to a fully open access system rather than a permanent settlement.
- What changed in cOAlition S’s 2026–2030 strategy
- Why cOAlition S is moving away from transformative agreements
- What library consortia and research offices need to renegotiate
- Answer-first Q&A: transformative agreements and diamond open access
- Implications and what comes next
What Changed in cOAlition S’s 2026–2030 Strategy
cOAlition S confirmed the end of its financial support for open access publishing under transformative arrangements after 31 December 2024, a position it first announced on 26 January 2023 and formalised in the Plan S Implementation Guidance. From 2025, participating funders stopped treating a transformative agreement as automatically compliant with Plan S; authors must instead demonstrate compliance through full open access publication, an independently negotiated agreement meeting transparency criteria, or rights retention.
The coalition’s Strategy 2026–2030, released 12 November 2025, builds on that withdrawal rather than reversing it. The document sets three strategic priorities: strengthening the foundations of full, immediate, sustainable, and equitable open access (including a review of the Plan S principles to give explicit weight to publish-review-curate models, diamond open access, and preprints); supporting the digital infrastructures that make open access sustainable; and exploring financially sustainable, equitable publishing systems with formal monitoring of policy impact.
Implementation runs in two phases: an initial two-year period from 2026 to 2027, followed by 2028–2030, with second-phase priorities to be set by the coalition’s Leaders Group based on what the first phase delivers. The coalition itself has grown considerably during this period, from 12 founding organisations at Plan S’s 2018 launch to 28 funders spanning Europe, North America, Jordan, Zambia, South Africa, and Australia.
Why cOAlition S Is Moving Away From Transformative Agreements
cOAlition S’s own reasoning is explicit: continuing to fund transformative arrangements indefinitely risked making them permanent, which the coalition has stated would perpetuate the hybrid open access model it has consistently opposed. Individual funders retain discretion to keep supporting transformative agreements as part of national strategies, and any such exceptions are published on the cOAlition S website, but this is now framed as an exception rather than the default route.
Independent data on open access growth supports the coalition’s case that the market has moved on from where it stood when transformative agreements were designed. According to the International Association of Scientific, Technical & Medical Publishers (STM), the share of articles, reviews, and conference papers published immediately as gold open access rose from 14% in 2014 to 40% in 2024, while the subscription-only share fell from 70% to 54% over the same decade. Gold open access, funded through article processing charges, is now the dominant open route — which is precisely the outcome the coalition says has intensified concerns about cost and equity, and pushed diamond open access up its agenda.
Lidia Borrell-Damián, chair of the cOAlition S executive steering group and Secretary General of Science Europe, has summarised the shift directly: “We are trying to shift the market towards more diverse, sustainable approaches.” Not every commentator reads the pivot the same way. Richard Sever, assistant director of Cold Spring Harbor Laboratory Press and a co-founder of the preprint server bioRxiv, has argued that Plan S has gone from being “fairly specific” — originally focused on flipping subscription journals through transformative agreements — to “rather vague,” now spanning preprints, alternative peer review, and diamond open access simultaneously.
| Open access route | Who typically pays | cOAlition S funder support, 2026–2030 |
|---|---|---|
| Transformative agreement (read & publish) | Library or consortium, bundled with subscription | Not funded as a default compliance route since 2025; national exceptions only |
| Gold open access (APC) | Author, institution, or funder, per article | Recognised route; cost and equity impacts now formally monitored |
| Rights retention (green OA + CC BY manuscript) | No publishing fee; repository deposit | Default compliance mechanism where no other route applies |
| Diamond/platinum open access | Universities, societies, funders, consortia infrastructure | Named strategic priority; principles review and infrastructure investment |
| Publish-review-curate (PRC) / preprints | Funder or community infrastructure | Included in the 2026–2027 principles review |
What Library Consortia and Research Offices Need to Renegotiate
Consortia that built multi-year budgets around transformative agreement renewals now need to treat those renewals as contestable rather than routine. The practical work falls into a small number of categories.
- Audit existing transformative agreements against cOAlition S’s current compliance rules, and flag which corresponding authors and grants are affected by the loss of default recognition.
- Reopen consortium-level negotiations with publishers whose transformative agreements are approaching renewal, testing whether an independently negotiated, transparent read-and-publish deal or a conversion to full open access better serves the portfolio.
- Reallocate a share of subscription and APC budgets toward diamond open access infrastructure — journal platforms, society publishing services, and consortium-run funds — in line with cOAlition S’s stated 2026–2027 priority of supporting digital publishing infrastructure.
- Strengthen rights retention workflows so that manuscript deposit with a CC BY licence happens at submission, since this remains the fallback compliance route wherever a transformative agreement no longer applies.
- Track the ESAC Initiative’s transformative agreement registry and national consortium reporting to benchmark negotiating positions against comparable institutions rather than negotiating in isolation.
Institutions with mature identifier and metadata infrastructure — ORCID, DataCite, and CrossRef records consistently linked to funder awards — are better placed to demonstrate compliance under this more fragmented set of routes than institutions still relying on a publisher-reported transformative agreement dashboard.
Answer-First Q&A: Transformative Agreements and Diamond Open Access
What is a transformative agreement?
A transformative agreement is an umbrella term, defined by the ESAC Initiative, for contracts negotiated between institutions and publishers that repurpose former subscription expenditure to remunerate publishers for open access publishing services, gradually shifting the underlying business model from toll access toward open access.
What is a transformative journal?
A transformative journal is a subscription or hybrid journal that commits to a defined trajectory toward full open access, including a rising share of open access content and offsetting subscription income against publishing fees. cOAlition S also withdrew financial recognition of this route after 2024.
What is diamond open access?
Diamond (or platinum) open access describes journals and platforms that charge no fee to either authors or readers, with publishing costs instead covered by universities, scholarly societies, funders, or library consortia. It is a named strategic priority in cOAlition S’s 2026–2030 strategy.
Is a transformative agreement still Plan S compliant?
A transformative agreement can still satisfy Plan S if it is published on an individual funder’s list of recognised exceptions for national strategies; otherwise, cOAlition S no longer treats it as automatically compliant, and authors must use full open access, an approved independent agreement, or rights retention instead.
Implications and What Comes Next
The near-term implication is budgetary and administrative: consortia negotiating transformative agreement renewals in 2026 and 2027 should expect publishers to resist unwinding these deals, since they remain commercially attractive, even as funder recognition narrows. The medium-term implication is structural: cOAlition S’s own strategy explicitly ties future funding priorities to diamond open access and shared infrastructure, meaning consortium budgets that continue flowing entirely through subscription-linked read-and-publish deals will increasingly diverge from where funder policy is heading.
The second phase of the strategy, from 2028 to 2030, is not yet fixed; cOAlition S’s Leaders Group will set those priorities based on what the 2026–2027 principles review and infrastructure investments actually deliver. Institutions that use the next two years to build diamond open access contributions, tighten rights-retention deposit workflows, and maintain clean, linked identifier metadata will be negotiating from a position of readiness rather than catching up once the second phase is confirmed.
See the CASRAI Dictionary for definitions of related open access and compliance terms, and the CASRAI research administration hub for broader compliance and infrastructure guidance.