Why Interchange Alone Won't Make Your Neobank Profitable

Most neobanks have proven they can acquire customers. What they have not proven, at scale, is that they can make money from them. The pattern is now well documented: a digital bank grows to millions of accounts, posts impressive download and sign-up numbers, and still cannot close the gap to sustainable profit. The reason is structural and lies in the revenue model itself.

Interchange — the small fee a bank earns each time a customer swipes a debit or credit card — was the engine that made the early neobank model possible. It is also the ceiling that makes neobank profitability so hard to reach. This piece explains where the interchange model runs out of room, why the real problem is revenue per user rather than user count, and how the more durable digital banks are using premium tiers — and the right anchor benefit inside them — to grow ARPU without chasing more swipe volume.

1. The interchange ceiling: why swipe revenue caps out

Interchange is a genuinely attractive revenue stream. It is recurring, it scales with everyday spending, and it requires no lending balance sheet. For a young digital bank, the path to first revenue is the path of least resistance.
The problem is that interchange is capped on two sides at once. On the regulatory side, debit interchange is constrained in many markets, which limits the per-transaction take. On the behavioral side — and this is the larger issue — most neobank customers treat the account as a secondary, top-up card for day-to-day spending while their salary, savings, mortgage, and investments stay with an incumbent. A secondary card generates a fraction of the interchange of a primary account, and almost none of the deposit and lending economics that make traditional banking profitable.
So a neobank can grow accounts indefinitely and still not grow revenue per account. Acquisition keeps costing money; the customers it acquires keep behaving like guests rather than primary banking relationships. That is the trap interchange-led models fall into.

2. The real gap is ARPU, not user count

The clearest way to see the problem is through average revenue per user (ARPU). The most-cited comparison puts the average neobank at roughly $45 in annual revenue per user, compared with approximately $350 at traditional retail banks — close to an eightfold gap.
That gap is why user growth alone has not translated into profit. Simon-Kucher’s Global Neobanking Radar, which has tracked challenger banks’ path to profitability for years, has consistently found that the large majority of neobanks remain unprofitable — with only a small minority of the most mature players reaching sustained profit. Aggregated 2024-25 reporting commonly cites figures in the region of three-quarters of neobanks still being unprofitable. The headline number moves; the underlying truth has not.
The exceptions prove the rule. The neobanks that have closed the gap did it by deepening the relationship, not by adding more cards. Nubank’s revenue per customer (reported in the region of $110) and Chime’s (reported higher still) climbed because those banks expanded into products customers actually pay for and use repeatedly — credit, lending, investing, and paid memberships — rather than relying on swipe fees. The lesson generalizes: profitability follows ARPU, and ARPU follows depth of relationship.

3. Why premium tiers are the obvious answer — and why most disappoint

Faced with the ARPU gap, almost every neobank arrives at the same conclusion: launch a paid premium tier. A recurring subscription is high-margin, predictable, and it converts a free user into a paying one without requiring a lending license. On paper, it is the cleanest route to revenue per user.
In practice, most premium tiers underperform — and the reason is simple. A premium tier is only worth paying for if it contains a benefit the member could not easily get for free elsewhere. Too many tiers are assembled from commodity features: a metal card, a marginally better interest rate, priority support, a few percentage points of cashback. Members do the math, conclude the tier is effectively a price increase dressed up as a benefit, and either decline to upgrade or churn out within a few months.

4. What actually makes a tier worth paying for

A premium tier holds when it is built around what we would call an anchor benefit — a single, high-perceived-value benefit substantial enough to justify the monthly fee on its own, with everything else positioned as supporting value. A strong anchor benefit shares a few characteristics. It carries obvious, visible value that members can quantify. It is something members already spend money on, so the savings feel real rather than theoretical. And it is used repeatedly, so the member keeps returning to the app and re-confirming that the subscription was worth it. Cashback alone rarely clears that bar. The category that does consistently is travel.

5. Why travel works as the premium-tier anchor

Travel is one of the few benefit categories that satisfies every criterion of a good anchor at once. It is aspirational and high in perceived value, so it makes a premium tier feel premium. It is a category that members already spend significant money on, so member-only rates produce savings that members can see and attribute directly to the subscription. And it generates repeat engagement: members browse, plan, compare, and book — and every one of those sessions is a reason to open the bank’s app rather than a competitor’s.

6. Engagement, then stickiness, then ARPU

The mechanism runs in that order, and the order matters. A travel benefit first drives engagement because members interact with it long before they book. Sustained engagement drives stickiness because a member who plans their travel within your ecosystem has a reason to keep their subscription and treat their account as more than a top-up card. And stickiness is what finally lifts ARPU – through the subscription fee itself, through the cross-sell opportunities that a more engaged customer opens up, and through the simple fact that an engaged primary-banking relationship is worth multiples of a dormant secondary one. This is the same dynamic

7. Keep the relationship, the data, and the brand

There is a version of this that backfires: bolting on a generic, off-brand travel-booking link that sends the member to a third-party site. That hands the experience, the data, and the relationship to someone else at the exact moment you are trying to deepen all three. The point of an anchor benefit is to make the member’s relationship with your bank deeper, not to route them elsewhere.

The model that works treats travel as loyalty infrastructure delivered under your own brand: member-only inventory and rates, presented inside your app, with the member data and the relationship staying with the bank. The bank owns the experience; a specialist partner handles the inventory, booking technology, and service operations behind the scenes. That distinction — infrastructure under your brand versus a referral link off your brand — is the difference between a benefit that builds ARPU and one that quietly leaks it

8. How to know the premium tier is working

A travel-anchored tier should be measured against the revenue problem it exists to solve, not against vanity engagement metrics. Three signals tell you whether it is working. The first is upgrade rate — the share of free users converting to the paid tier, which tells you whether the anchor benefit is actually anchoring. The second is ARPU lift among upgraded members versus the free base, segmented to isolate the subscription revenue and any cross-sell it unlocks. The third is primary-account behavior: are upgraded members routing more of their spending, and ideally their direct deposit, through the account? That last signal is the one that matters most, because it is the shift from secondary card to primary relationship — the exact behavior the interchange model could never produce on its own.

Reading these signals well depends on understanding the underlying retention mechanics. If the premium tier is new territory, it is worth grounding the program in the fundamentals of what drives a paying customer to stay and how to reduce early churn before scaling acquisition spend.