Fintechs Are Done Renting Banks

Chime announced this week that it's acquiring Stride Bank, a nationally chartered bank based in Oklahoma, for $590 million. Chime has been a Stride client for years, using Stride's charter to hold deposits and issue debit cards. Now Chime is buying the bank it used to rent from.

Chime is the third major fintech to make this move in 2026. Revolut secured a conditional US banking license in September. Block applied to establish Builders Bank, a national trust bank, the same month. Each took a different path to the same destination: own the charter.

Why fintechs rented in the first place

Starting a bank from scratch requires a charter, which takes years and costs tens of millions in legal and regulatory work before you process a single transaction. The BaaS model (Banking-as-a-Service) offered a shortcut. A fintech partners with a chartered bank, the bank provides the regulatory umbrella, and the fintech builds the customer experience on top.

This model launched an entire generation of neobanks. Chime used Stride and Bancorp. Mercury used Choice Financial and Evolve. Brex used Emigrant Bank. The fintech got to market in months instead of years, and the sponsor bank earned revenue on deposits it never had to acquire.

The arrangement worked until it didn't.

What breaks at scale

A BaaS relationship is a dependency. The sponsor bank controls the charter, the compliance program, the BSA/AML obligations, and ultimately the relationship with regulators. The fintech controls the product and the customer. When both sides are small, the partnership is manageable. When the fintech scales to millions of accounts, the dependency becomes a constraint.

Chime has roughly 22 million accounts. Every compliance decision, every product change that touches the banking layer, every new feature that requires regulatory approval flows through the sponsor bank.

At that scale, the fintech is the largest client of a bank that wasn't built to serve that kind of volume. The sponsor bank's compliance team becomes the bottleneck for the fintech's product roadmap.

Regulators have also tightened scrutiny on BaaS relationships. The FDIC and OCC have issued guidance on third-party risk management that puts more responsibility on the sponsor bank for oversight of its fintech partners.

Synapse's collapse in 2024, which left thousands of customer accounts in limbo, accelerated that scrutiny. Sponsor banks are now more cautious about onboarding large fintech clients, and more expensive when they do.

The $590 million math

Chime paid $590 million. Run the numbers the other way.

Chime reportedly generates over $1.5 billion in annual revenue, primarily from interchange on debit card transactions. A meaningful cut of that revenue goes to the sponsor bank as part of the BaaS arrangement.

Interchange splits, compliance fees, deposit revenue sharing, and minimum balance requirements all add up.

Owning the charter eliminates the split. Chime keeps the full interchange, earns interest on its own deposits, and controls its own compliance program.

If the BaaS fees run even 5% to 10% of revenue, the acquisition pays for itself within a few years from fee elimination alone. That's before accounting for the product velocity gained by removing the sponsor bank as a dependency.

Revolut's math is similar. At 80 million global customers and a $115 billion valuation, Revolut can't build its US operation on someone else's charter. The conditional license lets Revolut hold deposits directly, offer lending products, and control its own regulatory relationships in the market that matters most for its IPO narrative.

What this means for BaaS

The BaaS model isn't dead. For fintechs that need deposit accounts or card programs, it's still the fastest way to launch.

For fintechs processing under a million accounts, BaaS still makes sense. The regulatory overhead of owning a charter, the capital requirements, the examination cycle, the compliance staffing, these are fixed costs that only pencil out at scale.

A startup burning $3 million a month can't absorb the cost of maintaining a charter.

For fintechs that have scaled past that threshold, the BaaS model becomes the thing they need to outgrow. Chime, Revolut, and Block all reached the point where the cost of renting exceeded the cost of owning.

The $590 million Chime paid for Stride is a large number. It's a smaller number than the cumulative cost of remaining dependent on a sponsor bank for the next decade.

The sponsor banks that built their business on BaaS revenue are watching their largest clients either leave or get acquired. Stride, Bancorp, Evolve, Choice.

Stride's outcome, bought by its biggest client for $590 million, may be the best exit a BaaS bank can hope for.