What it means
The arrangement usually involves three parties. A licensed bank provides the regulated foundation, a technology provider supplies the software layer that connects to it, and the customer facing brand builds the product and takes the marketing risk.
Money flows through the bank's systems, so customer deposits sit on the bank's balance sheet rather than the brand's. The commercial logic is speed and cost.
Obtaining a banking licence can take years and a great deal of capital, whereas plugging into an existing licence can put a working product in front of customers in months, at a fraction of the upfront cost. Revenue comes from a mix of sources, and understanding the split is essential before building a business case.
Card interchange fees earned when customers spend, interest earned on deposit balances, monthly subscription fees and payment charges are the common pillars, and the BaaS partner typically takes either a per-account fee, a share of that revenue, or both. Regulators have grown far more attentive to these arrangements, and that has changed the economics.
The licensed bank remains accountable for anti money laundering checks, customer identification and safeguarding of funds, so it will insist on compliance standards, audit rights and sometimes a say in which customers the brand can accept. The main strategic risk is concentration.
A brand that builds its entire product on one sponsor bank is exposed if that bank exits the market, is told to reduce its programme count, or simply reprices the renewal terms. That is why larger operators build the ability to move to a second provider.
In practice
Real-world examples.
Example
An online payroll provider adds instant pay accounts so workers can access wages the day they are earned. It uses a sponsor bank's licence, keeps the branding entirely its own, and earns interchange revenue every time a worker spends on the card.
Example
A national supermarket chain launches a current account and cashback card built on a BaaS platform. Customer deposits sit with the partner bank, while the supermarket gains spending data and a reason for shoppers to return.
Example
A vertical software company serving veterinary practices embeds payment acceptance and a business account into its scheduling product. Practices no longer reconcile two systems, and the software firm adds a revenue stream worth more per customer than its original subscription.
Think of it
“BaaS lets other companies offer banking using your infrastructure-banking as a platform.
Formula
Calculation
Net contribution = revenue earned on the accounts - (per-account platform fees + revenue share paid to the provider)
An illustrative expense management platform runs 80,000 active business accounts through a BaaS provider. The provider charges $0.40 per active account per month, so the platform fee is 80,000 x $0.40 = $32,000 a month.
Customers spend on the cards, generating $250,000 a month in interchange revenue, and the provider takes a 20% revenue share, which is $250,000 x 0.20 = $50,000 a month.
Total cost to the platform is $32,000 + $50,000 = $82,000 a month, leaving a net contribution of $250,000 - $82,000 = $168,000. Across 80,000 accounts, that is $168,000 / 80,000 = $2.10 per account per month, which the platform must weigh against its own support, fraud and customer acquisition costs before calling the line profitable.Case study
Seen in the real world.
This is an illustrative and clearly fictional example. Quillstone Freight Tools, an invented software provider for small haulage firms, sold a subscription product at $95 per customer per month and had 12,000 customers who all struggled with fuel card spending and slow settlement.
Quillstone partnered with a BaaS provider to launch branded business accounts and fuel cards. Within eighteen months roughly 60% of its customers had adopted the accounts, and the interchange and account revenue added a meaningful amount per customer per month on top of the subscription, at a gross margin higher than the software itself.
The fictional company also learned the hard part. Its sponsor bank tightened onboarding rules mid contract, forcing Quillstone to re-verify several thousand customers at short notice, and a planned expansion into a second country stalled because the sponsor was not licensed there. Quillstone's management now treats sponsor bank diversity as a board level issue rather than a procurement detail.
Watch out
Common mistakes.
- Assuming BaaS removes regulatory obligations, when the brand still carries obligations around customer onboarding, complaints and marketing conduct even though the bank holds the licence.
- Building a business case on interchange revenue alone, without modelling the per-account fees, fraud losses and support costs that eat into it.
- Depending on a single sponsor bank with no fallback, which turns any change in that bank's strategy into a direct threat to the product.
Questions
People also ask.
Who holds customer deposits in a BaaS arrangement?
The licensed partner bank does, which is also what determines whether the funds carry deposit protection.
Is BaaS the same as open banking?
No, open banking is about sharing account data and initiating payments with permission, while BaaS is about providing the underlying account and card products themselves.
How long does a BaaS launch typically take?
Straightforward card and account products commonly go live in a few months, though lending or multi country products take considerably longer because of the extra approvals involved.
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