by Sarah Grotta, EVP and Chief Fintech Officer, FinWise Bank
Most fintech–bank partnership conversations start the same way: a fintech team arrives with a clear product vision, a customer segment, a processing stack, and a timeline. They’ve already made dozens of decisions—what they need from a sponsor bank is straightforward: a partner that can keep up, stay aligned, and operate with real control.
Yet many fintechs may discover something else,: perceived slow internal cycles, unclear criteria, partial product support, and fee structures that feel disconnected from how fintechs actually scale.
The Banking‑as‑a‑Service market is projected to grow from $18.6B in 2024 to $73.7B by 2034 (15.1% CAGR)—meaning more programs, more complexity, and higher expectations for governance and execution. At the same time, regulatory attention has sharpened: one industry analysis noted that since early 2024, more than a quarter of FDIC enforcement actions targeted sponsor banks involved in embedded finance partnerships, reinforcing that responsibility remains with the bank even when third parties handle key program functions. [Research Nester] [Finance Magnates] [ABA Banking Journal]
In that environment, fintechs aren’t just choosing a bank—they’re choosing an operating partner. Here’s what is needed.
1. Clarity fast: Get to “yes” or “no” early
Time is the one resource fintechs can’t replenish. One of the most underappreciated sponsor-bank capabilities is the ability to evaluate a program quickly and give a clear answer—based on product type, customer base, risk profile, and operational dependencies.
Too many banks operate with ambiguous criteria and elongated internal review cycles. For fintechs, that ambiguity is expensive: it delays product timelines, distracts teams, and burns runway. A fast, informed “no” can be more valuable than a slow “maybe,” because it allows founders to redirect energy toward a bank that can truly support the program.
What good looks like: sponsor banks that have done the internal alignment work—risk appetite, product boundaries, operational readiness—so they can answer supportability questions in days rather than months.
2. Infrastructure depth: “Full-stack” support without hidden gaps
Here’s a difficult truth: most sponsor banks support some fintech use cases well. Fewer support multi-product programs without forcing architecture compromises.
Deposits, cards, lending, and payments all have distinct requirements—processing partners, account structures, funds flows, compliance controls, and operational support. If a bank can only support one or two product lines cleanly, fintechs often end up redesigning around constraints rather than customers. Those early compromises can haunt a program for years.
Regulators have also highlighted risks that arise when banks rely heavily on third parties for key functions—particularly when responsibilities for “system of record,” compliance activities, or deposit operations become fragmented. [IBS Intelligence]
What good looks like: sponsor banks with intentionally built infrastructure across major product lines—combined with clear accountability for how funds move, how data is reconciled, and where truth lives.
3. Auditability and control: The new baseline, not a “nice-to-have”
As embedded finance has scaled, the sponsor-bank challenge has shifted from “can we launch this?” to “can we run this safely at scale?”
A useful data point: in Alloy’s 2024 State of Embedded Finance findings, 90% of financial institutions reported challenges meeting compliance requirements as a sponsor bank, and 94% planned to invest in new compliance technology to better manage embedded finance partnerships. Alloy also notes that a key barrier is lack of control and auditability over fintech partners’ policy controls—a structural issue when the bank is ultimately accountable for program outcomes. [ProSight Financial Association]
That’s why the best sponsor banks are prioritizing capabilities that create continuous visibility and defensible oversight, rather than relying on periodic reporting alone. In practice, that can mean designing programs so the bank maintains ongoing access to key subaccount and transaction views to support segregation of funds and compliance expectations.
What good looks like: sponsor banks that build oversight into the operating model—visibility, reconciliation, and controls that scale as programs grow.
4. Pace is real: Capacity and prioritization matter more than process maps
Ask fintech operators what they need, and “speed” comes up immediately. But speed isn’t just a workflow diagram—it’s a function of capacity and organizational prioritization.
Fintechs don’t get do‑overs on launch windows. Missed timelines affect fundraising, product momentum, and competitive positioning. The question fintechs should ask isn’t only “how long does your process take?” but also “what does a typical launch look like from your side of the table, and do you have bandwidth right now?”
Some sponsor banks formalize this with structured onboarding and decision pathways—clear scoping sessions with internal stakeholders (risk, compliance, IT/security, customer experience), and transparent approval stages that set expectations upfront.
Regulatory constraints can also affect pace. As one ABA Banking Journal analysis observed, nearly 45% of companies with BaaS programs were supported by banks under formal enforcement action (as of May 2025), which can limit a bank’s capacity to onboard new programs or execute quickly. [Banking Dive]
What good looks like: sponsor banks that keep their partnership portfolio at a manageable size, can resource implementation properly, and can show an actual launch path—not just a generic timeline.
5. Real partnership quality: What happens after go-live matters more than go-live
Experienced fintech teams know launch is the beginning. Programs evolve. Networks change. Processors get acquired. Regulatory interpretations shift. Product features expand.
The fintechs that succeed long-term are the ones who pick sponsor banks that can navigate change with stability—without reflexively shutting down innovation or applying blanket restrictions. In many cases, the most valuable partner is the one willing to engage in a rigorous conversation: what’s changing, what risks that introduces, what controls need to adapt, and how to implement changes without breaking customer trust.
What good looks like: sponsor banks that can engage proactively, communicate clearly, and help programs adapt—because resilience is now a competitive advantage.
6. Economic alignment: Terms that reflect the life cycle of a program
Fintechs read pricing terms as more than economics—they read them as a signal of alignment.
Rigid minimums, one-size-fits-all schedules applied to very different risk profiles, and non-flexing fee structures can signal that a bank is treating the partnership as a transaction rather than a shared growth journey.
This doesn’t mean “cheap.” It means thoughtful: structures that recognize early-stage realities while creating durable incentives as volume scales.
What good looks like: sponsor banks that understand fintech business models and can structure terms that make sense across stages—launch, ramp, scale, and expansion.
The bottom line
The sponsor‑bank decision is ultimately a decision about execution. Fintechs don’t need a partner that simply says “we support fintech”—they need a sponsor bank that can prove it in three places that matter most: supportability, pace, and economic alignment.
Supportability (Get to “yes” or “no” faster): At FinWise, we’ve formalized how we evaluate programs so fintech teams aren’t stuck in open‑ended conversations. For example, our card sponsorship diligence framework is built to reach term‑sheet readiness in a defined window measured in days not months. The point isn’t that every deal is a “yes”—it’s that the answer comes with clarity, early.
Pace (Capacity is the real constraint): Speed isn’t a slogan; it’s a function of bandwidth and operating cadence. We manage pace by being intentional about portfolio capacity and by running structured governance and onboarding motions that pull the right stakeholders in early (risk/compliance, IT/security, customer experience) rather than serially bottlenecking decisions.
Economic alignment (Terms that fit the program’s stage): Finally, fintechs read commercials as a signal of whether a bank understands how programs scale. Our approach is to treat economics as part of the operating conversation—not a one‑size‑fits‑all template—so the structure supports responsible launch, real ramp, and long‑term durability (not just short‑term fee capture).
In a market where scrutiny and standards continue to rise, “what good looks like” is a sponsor bank that can evaluate quickly, execute with real pace, and align incentives for the long haul. That’s the bar we build to—and the standard fintechs should insist on.