How Keel Turned a Failed Neobank Into a Profitable Banking‑as‑a‑Service Platform

Manchester‑based fintech Keel represents a growing trend in financial technology: companies abandoning the costly consumer‑neobank race and instead selling the underlying infrastructure to other fintechs. After operating a retail digital bank called Frost for five years, the company shut down its consumer accounts in 2024 and rebuilt the technology stack into a profitable Banking‑as‑a‑Service (BaaS) platform for fintech businesses.

The pivot turned an unsuccessful direct‑to‑consumer product into a B2B infrastructure business focused on embedded finance, payments, and regulatory tooling.

The original Frost neobank

Keel began life in 2019 as Frost, a consumer‑focused neobank that combined digital banking features with tools designed to help users switch energy providers.

Over several years, the app gained traction:

• More than 18,000 users joined the platform.
• The company processed tens of millions of pounds in transactions.

Despite that activity, the economics of running a consumer neobank proved difficult. Market changes and shifts in the underlying business model forced the company to reconsider its strategy, leading to the closure of all retail accounts in 2024.

Instead of abandoning the technology it had built, the team chose to repurpose it.

The pivot: from consumer bank to fintech infrastructure

Following the shutdown of Frost, the company relaunched as Keel, positioning itself as a Banking‑as‑a‑Service infrastructure provider.

Rather than competing directly with banks or consumer apps, Keel now provides the building blocks fintech companies need to launch financial products. The pivot leveraged several advantages gained during the Frost era:

• Experience running a real consumer fintech product
• Existing payments and core banking technology
• Compliance processes built for regulated financial services

This “operator’s perspective” became part of Keel’s positioning: the infrastructure was designed from the lessons learned operating a live fintech product, rather than purely as a theoretical platform.

By emerging from stealth after the rebuild, Keel reported reaching profitability while attracting fintech clients across multiple markets.

Core services Keel now offers fintech companies

Keel’s platform is designed as modular financial infrastructure that fintechs can integrate through APIs. Its product stack includes several core capabilities.

Virtual IBANs and payment accounts

One of Keel’s primary offerings is virtual IBAN infrastructure, which allows fintech platforms to issue individual account numbers for users or customers.

Through its APIs, companies can:

• Issue unlimited GBP and multi‑currency IBANs
• Collect and send payments in real time
• Integrate bank transfers, cards, or digital wallets into their platform

These virtual IBANs enable applications such as digital wallets, remittance services, and trading platforms.

Multi‑currency accounts and foreign exchange

Keel also provides multi‑currency payment infrastructure designed for cross‑border fintech services.

Its platform supports multiple currencies and includes foreign‑exchange tools intended to reduce conversion costs and currency risk while providing transparent pricing.

Supported currencies include major international units such as EUR, USD, CAD, and others used in global payments.

Card issuing and embedded payments

Another core component of the stack is card issuing infrastructure, enabling fintechs to launch branded payment cards.

The platform supports:

• Visa debit, prepaid, or credit cards
• Physical and virtual cards
• Integration with mobile wallets like Apple Pay and Google Pay

This lets platforms embed spending functionality directly into their financial products.

Core banking APIs and ledger technology

Under the hood, Keel provides an API‑first core banking system designed to integrate with fintech apps and platforms.

Capabilities include:

• Real‑time transaction processing
• Account and balance management
• Automated ledgers for payment reconciliation
• REST APIs for integrating banking functions into external systems

These APIs allow fintechs to build products without developing their own regulated banking infrastructure from scratch.

Compliance and transaction monitoring

Financial compliance is another major part of the offering.

Keel includes tools for:

• Anti‑money‑laundering (AML) monitoring
• Fraud detection
• Transaction monitoring using configurable rules and automated systems

These systems help fintech clients meet regulatory obligations and reduce fraud risks while operating payment services.

Regulatory positioning

Regulation is central to any BaaS provider because the platform effectively sits between fintech apps and the financial system.

Reports about Keel indicate the company secured regulatory approval for its new model and operates as an FCA‑authorised electronic money institution, enabling it to provide payment services and regulated financial infrastructure in the UK.

More broadly, the BaaS sector has faced increased scrutiny in recent years as regulators focus on operational resilience, safeguarding rules, and accountability in fintech infrastructure providers.

As a result, many platforms—including Keel—emphasize compliance tooling, fraud prevention, and operational stability as core parts of their offering.

Strategic goals: infrastructure over consumer apps

Keel’s long‑term strategy represents a major shift from its Frost origins.

Instead of pursuing mass adoption among consumers, the company is focused on becoming embedded financial infrastructure for other fintech businesses.

The model aims to:

• Help fintechs launch products faster using prebuilt banking components
• Provide scalable payments and account infrastructure
• Enable international financial products through multi‑currency support
• Monetize infrastructure rather than consumer banking services

This approach aligns with a broader industry trend: many fintech startups now build API‑driven financial infrastructure platforms rather than full consumer banks, allowing them to serve multiple clients instead of competing for individual users.

The bigger lesson from Keel’s pivot

Keel’s transformation highlights a common path in fintech.

Building a consumer neobank is expensive and competitive, but the underlying technology—payments rails, compliance systems, and core banking software—can be repurposed into infrastructure that serves many companies.

By turning Frost’s internal technology into a BaaS platform, Keel effectively shifted from a single fintech product to a platform supporting many fintech products, a model that can scale more efficiently across markets.