Four Months to Go
Basel 3.1 is the UK implementation of the final Basel III reforms, applying to PRA-authorised banks and building societies. It revises how firms calculate risk-weighted assets across credit risk, market risk and operational risk, and introduces the output floor that limits how far internal models can reduce capital requirements below the standardised approach. For firms in scope, it is a substantial change to the capital calculation.
With a 1 January 2027 go-live, late August is a natural checkpoint. Four months is enough time to close remaining gaps but not enough to start from scratch — so the checkpoint is about confirming readiness and triaging what is left, not beginning the work.
Who Is Actually in Scope
The direct scope is PRA-authorised deposit-takers — banks and building societies. The PRA has applied proportionality so that smaller, simpler firms face a less complex version of the regime than large internationally-active banks, but the core framework applies to the sector.
Most fintechs are not PRA-authorised deposit-takers. Payment institutions, e-money institutions, and the majority of solo-regulated firms are outside the direct scope of Basel 3.1. For these firms — the majority of the fintech sector — the relevant question is not "are we ready for our own Basel 3.1 calculation" but "how does Basel 3.1 affect the banks and lenders we depend on". That indirect impact is the substance of the checkpoint for most readers.
The In-Scope Checkpoint
For the minority of readers whose firm is directly in scope — a fintech with a banking licence — the four-month checkpoint runs through five readiness questions:
- Is the revised RWA calculation built and reconciled? Credit, market and operational risk under the new approaches, reconciled to the current basis so the impact is understood.
- Is the output floor modelled? The floor's bite depends on how far internal models currently reduce capital below the standardised approach.
- Is the capital impact quantified and communicated? The board and, where relevant, investors need to understand the change in the capital requirement.
- Are the reporting systems ready? The regulatory returns change; the reporting infrastructure needs to produce them.
- Is any capital action needed and timed? If the requirement rises, any capital raise or balance-sheet adjustment needs to be planned now, not in December.
The Indirect-Impact Assessment
For the majority of fintechs outside direct scope, Basel 3.1 still matters through the banks and lenders they depend on. As banks recalibrate their capital requirements under the new regime, the cost and availability of the services they provide to fintechs can shift.
- Corporate borrowing. If a fintech's lending facilities come from a bank whose capital cost on that lending changes under Basel 3.1, the pricing or availability of the facility can move. Review facility terms and renewal timing.
- Banking services. The cost of the banking relationship — accounts, payment services, FX — can shift as the provider's capital economics change.
- Embedded-finance partnerships. Fintechs that partner with banks for regulated activities (BaaS, lending-as-a-service) may find the partner's capital treatment of the arrangement changes, affecting the commercial terms.
Bank-Partner Behaviour
The practical August action for an out-of-scope fintech is to open the conversation with bank partners now. A bank recalibrating for Basel 3.1 will be reviewing the capital cost of its various relationships and products; a fintech that engages proactively can understand any coming changes and plan for them, rather than being surprised by a repricing or a term change in Q1 2027.
The specific questions to ask a bank partner: does Basel 3.1 change the capital treatment of our facility or arrangement, and if so, what is the expected effect on pricing, availability or terms, and when. A bank that values the relationship will engage; the answer shapes the fintech's own 2027 planning.
"For most fintechs, Basel 3.1 is not their own capital calculation — it is their bank partners' capital calculation changing underneath them. The firms that engage their banks now understand the coming shifts and plan for them; the firms that wait discover the repricing when the renewal terms arrive."
The Run-In to January
The four-month run-in, from late August to the 1 January go-live:
- Late August: In-scope firms confirm capital-model readiness against the five checkpoint questions; out-of-scope firms open bank-partner conversations.
- September–October: In-scope firms close remaining model and reporting gaps; out-of-scope firms assess and plan for any bank-partner changes.
- November: In-scope firms finalise reporting systems and any capital action; out-of-scope firms confirm 2027 facility terms.
- December: Final readiness confirmation; parallel running where applicable.
- 1 January 2027: Go-live.
Key Takeaways
- Basel 3.1 goes live 1 January 2027 for PRA-authorised firms. Late August, four months out, is the readiness checkpoint.
- Direct scope is PRA-authorised deposit-takers. Most fintechs — payment institutions, e-money institutions, solo-regulated firms — are outside direct scope and affected indirectly.
- In-scope firms run five checkpoint questions: RWA calculation built, output floor modelled, capital impact quantified, reporting ready, capital action timed.
- The output floor is the change most likely to surprise firms that have relied on internal models — model its effect on the specific portfolio now.
- Out-of-scope fintechs should assess indirect impact on corporate borrowing, banking services and bank partnerships, and open bank-partner conversations now.
- Match the response to the real exposure — one focused conversation for an indirectly-affected small firm, a full readiness review for a fintech with a banking licence.
