Scale Drives Card Issuing Margins

This is why early card fintechs often look bigger in gross revenue than in actual earnings power. A large share of every swipe is spoken for before the app company gets paid, because the sponsor bank, card network, processor, and often a program manager all take their cut first. The fintech only starts to see real margin expansion when transaction volume is high enough to force down the bank and infrastructure take rates, or when it adds software and other products on top.

• On a typical program, consumer debit starts around 135 basis points and B2B closer to 240 to 250. From there, network fees can take about 50 basis points, the bank may start around 20 to 30 basis points, and processor or program manager fees can take another 25 to 30, which leaves the fintech with much less room than the headline interchange rate suggests.
  1 sacra 3 sacra
• Scale changes the split. Sponsor bank pricing can compress from roughly 20 to 30 basis points at launch to only 2 to 3 basis points on a mature program like Marqeta with Sutton. That is why larger fintechs get structurally better unit economics than smaller ones, even when they are running the same basic card product.
  1 sacra 3 sacra
• The way out is to own more of the stack or sell more than interchange. BaaS platforms talk about building KYC, ledgering, and issuing in house to stop paying third parties. Fintechs like Brex and Ramp add expense software and subscriptions, because software revenue is not split four ways every time a user swipes a card.
  2 sacra 3 sacra 4 sacra

The market is moving toward fintech products where interchange is the wedge, not the whole business. As infrastructure pricing compresses and card issuing becomes more standardized, the winners will be the companies that either negotiate like scaled platforms, or wrap cards inside software, lending, and workflow products that carry their own margin.