Fiinu and Conister Bank Announce Exclusive Partnership to Launch Innovative Plugin Overdraft® in UK

Fiinu seals exclusive Conister Bank deal to launch Plugin Overdraft in the UK

Fiinu Plc (LON:BANK) has signed an exclusive strategic partnership with Conister Bank, a subsidiary of Manx Financial Group (LON:MFG), to launch its Plugin Overdraft in the UK, subject to regulatory approval. This is a notable step for Fiinu’s bank-agnostic model and a fresh take on how overdrafts can be delivered using Open Banking and AI underwriting.

The rollout is set to begin in Q4 2025, first to Payment Assist Limited’s (PAL’s) one million plus existing retail customers, before expanding to Conister’s broader retail and SME base across the UK and Isle of Man. For a fintech that has built, audited and now productised a bank-grade platform, this partnership gives Fiinu a ready-made distribution engine and a credible banking sponsor.

What is the Plugin Overdraft and why it matters

Fiinu’s Plugin Overdraft is designed to be ‘bank-agnostic’ – meaning customers can keep their existing bank account and simply add an overdraft from a separate provider. It uses Open Banking to read a customer’s account data (with permission) and AI underwriting to assess affordability and risk.

In plain English: overdrafts get unbundled from current accounts. Consumers gain choice, transparency and flexibility without switching banks. Technically, the platform can access over 100 million personal current accounts in the UK and 95% of EU bank accounts, which hints at serious long-term scalability.

Rollout plan and target customers

The product will launch as a white-label service under the brand ‘Conister Bank Plugin Overdraft, powered by Fiinu’. The initial cohort is PAL’s one million plus retail customers – a sizeable starting base with clear cross-sell potential – followed by a broader roll-out to Conister’s retail and SME customers in the UK and Isle of Man.

Timing is Q4 2025, and it is explicitly subject to regulatory approval. That means investors should expect further updates as approvals progress and the operating model is signed off.

Master Services Agreement: key commercial terms investors should know

The Master Services Agreement (MSA) governs how Fiinu and Conister will work together. The headlines point to a capital-light, platform-led model for Fiinu with aligned incentives.

Term	Detail
Exclusivity	Conister has exclusive rights in the UK and Isle of Man for a minimum of three years, unless mutually agreed otherwise.
Branding	White-labelled as ‘Conister Bank Plugin Overdraft, powered by Fiinu’, integrated into Conister and PAL channels.
Profit-sharing	Audited share of annual product profits, reconciled annually in arrears. Exact split not disclosed.
Platform fees	Fiinu will invoice Conister under an agreed charging structure for development and ongoing platform usage on a volumes basis.
Governance	Jointly managed programme with structured governance and regular strategic reviews.
Customer pricing	Not disclosed.
Credit risk allocation	Not disclosed.
Regulatory status	Launch subject to regulatory approval.

Key numbers at a glance

Metric	Figure
Launch timing	Q4 2025 (subject to regulatory approval)
Initial customer base	PAL’s one million plus retail customers
Exclusivity period	Minimum three years (UK and Isle of Man)
Addressable UK accounts	100 million plus personal current accounts
EU bank coverage	95% of EU bank accounts (technical capability)

Why this could be significant for Fiinu shareholders

This deal looks like a monetisation bridge for Fiinu’s technology. There are two clear revenue levers: a volumes-based platform fee and a share of annual profits from the product, audited and paid in arrears. While the exact economics are not disclosed, the combination suggests alignment around both utilisation and profitability.

Conister brings credibility and a long operating history, which should help in regulatory engagement. Crucially, PAL’s one million plus customers offer a practical, low-friction starting segment. If adoption is strong, the unit economics could scale quickly given the bank-agnostic model and existing channel integration.

The exclusivity is a double-edged sword. It gives Conister clear incentive to invest and push distribution, but it also limits Fiinu’s ability to partner with other UK banks for at least three years unless both parties agree. For shareholders, that trades breadth for depth with a single committed partner – sensible if execution is tight.

Open Banking and AI underwriting: the strategic edge

Open Banking allows third parties to securely access bank account data (with customer consent) for better decisioning. Layering AI underwriting on top should mean more responsive and granular affordability assessments, which is especially relevant for overdrafts where usage patterns can be dynamic.

Fiinu’s platform was originally developed and audited for Fiinu Bank in the UK and has evolved into a proprietary AI-driven underwriting engine. If it can deliver accurate risk assessment at scale, that is a competitive advantage that supports both customer outcomes and lender economics.

Management commentary: reading the signals

Fiinu’s CEO emphasises scale, AI-driven underwriting, and the ability to serve the UK’s 100 million plus personal current accounts, with potential to scale across thousands of EU banks. Conister’s CEO calls it a world-first unbundled overdraft solution and highlights customer choice and flexibility.

The repeated focus on white-labelling, distribution through PAL, and governance suggests both teams are intent on a disciplined, stepwise rollout rather than a big-bang launch. That is sensible given regulatory dependencies and the importance of data-driven underwriting quality.

Risks and open questions investors should track

• Regulatory approval – the launch is contingent on approvals. Timelines and conditions are not disclosed.
• Adoption and engagement – customer pricing and product features are not disclosed, so uptake remains an execution variable.
• Credit risk ownership – not disclosed. This affects capital intensity, margins and scalability.
• Economics – the profit-sharing split and platform fee rates are not disclosed, so revenue contribution is unclear pre-launch.
• Exclusivity – minimum three-year UK and Isle of Man exclusivity with Conister limits other UK partnerships unless mutually agreed.
• Delivery timing – Q4 2025 is the stated target; any slippage would push revenue recognition into later periods.

What to watch next

• Regulatory milestones and clarity on the approval pathway.
• Pilot or phased onboarding of PAL’s customer base and early performance metrics.
• Disclosure on customer pricing, credit risk allocation and any initial loss provisioning approach.
• Further detail on the audited profit-share mechanics and volumes-based platform fees.
• Announcements on expansion beyond PAL to Conister’s wider retail and SME segments.

Bottom line: a credible route to scale if execution lands

This is a well-constructed partnership: a bank-grade, audited platform from Fiinu; a 90-year-old banking partner in Conister; and a ready pool of one million plus customers via PAL to jump-start adoption. The model is capital-light for Fiinu and aligned through both platform fees and profit-share.

The opportunity is clear, but so are the dependencies. Regulatory approval, economics, and credit risk allocation will determine how quickly this translates into material revenues. For now, the Q4 2025 timeline and exclusivity with Conister set the stage for a focused, data-driven launch of a genuinely novel overdraft product in the UK.