Why challenger banks bleed cash while giants coin it

2. Cost of funding: what you pay depositors to keep their money with you.

Incumbents win on both. Let's see how.

Distribution: why incumbents acquire customers for almost nothing

Distribution means how a bank reaches customers. Incumbents inherited three distribution assets that challengers must buy from scratch.

Branches and existing relationships. JPMorgan Chase serves over 80 million US consumers (per its 2024 disclosures). Most arrived years ago and simply never left. Banking is famously "sticky": switching your salary deposit, direct debits, and card details is annoying, so people don't. The incumbent's marginal cost to keep you is close to zero.

Cross-sell. When Chase already holds your checking account, selling you a mortgage or credit card costs almost nothing. The relationship is already there. A challenger has to win the whole relationship, product by product.

The current account as an anchor. In the UK, the "current account" (checking account, in US terms) is the gateway product. Once it's your main account, the bank sees your income and can lend against it. Challengers know this, which is why Monzo, Starling, and Revolut fight so hard to become your *primary* account, not your secondary "spending" card.

Here is the trap for challengers. Many early Monzo and Revolut users treated the app as a *travel card* or *budgeting toy*, not their salary account. Fun, viral, cheap to sign up. But a secondary account holds little money and generates little lending. You get the CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → without the payoff.

A simple worked example

Assume (illustrative, not real figures):

• A challenger spends 40 dollars to acquire a customer through app-store ads and referral bonuses.
• That customer keeps an average balance of 300 dollars (a spending account).
• The bank earns roughly a 3 percent spread on deposits it can lend or park at the central bank.

Annual gross revenue from that customer: 300 x 0.03 = 9 dollars.

Payback on a 40 dollar CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition →: over four years, before you even count service costs.

Now an incumbent's primary-account customer keeping 8,000 dollars:

8,000 x 0.03 = 240 dollars per year, on a customer who cost almost nothing to acquire because they walked into an existing branch relationship.

Same "3 percent spread." Wildly different economics. The difference is entirely balance size and acquisition costacquisition costCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition →, not technology.

Cheap deposits: the incumbent's invisible superpower

Here is the part that non-bankers miss. Not all deposits cost the same.

A sticky, low-interest checking deposit (someone's salary sitting in a current account earning near zero) is the cheapest funding on earth. The bank pays you almost nothing, then lends your money out.

Incumbents are stuffed with these. Decades of trust, inertia, and branch presence mean trillions sit in accounts paying close to zero. This is often called a bank's deposit franchise, and it is the single most valuable asset most large banks own.

Challengers face the opposite problem. To attract deposits fast, many offer high-interest savings or pay generous rates through partnerships. That is expensive funding. Revolut and others have leaned on paid savings products and interest-bearing balances to grow deposits quickly, which grows the *balance* but shrinks the *spread*.

So the incumbent funds lending at near zero. The challenger often funds it at a rate that leaves far less spread. Same loan, thinner margin.

For a clear primer on how deposits fund lending, the Bank of England's explainer is excellent and free: How does the economy work? Money creation in the modern economy.

The power balance across the chain

Let's mapmapUsing software to automate repetitive marketing tasks and campaigns, enabling personalisation at scale across channels like email, web, and social.View full definition → the players and where value pools.

Incumbents (JPMorgan Chase, Bank of America, Citi in the US; HSBC, Barclays, Lloyds, BNP Paribas in Europe). They hold the deposit franchises, the branch networks, and the regulatory scale. They capture the fattest margin because they fund cheaply and cross-sell freely.

Challengers (Monzo, Starling, Revolut in the UK and EU; Chime, a large US neobank, in the US). They win on product experience and speed. But most rely on a full banking licence or a partner bank to actually hold deposits and lend.

A key distinction: licence versus partner. A bank needs a banking licence from a regulator to take insured deposits and lend. In the US, that means approval from bodies like the OCC (Office of the Comptroller of the Currency) or state regulators, with deposit insurance from the FDIC (Federal Deposit Insurance Corporation). In the UK, it is the PRA (Prudential Regulation Authority) plus the FCA (Financial Conduct Authority).

Chime does not hold a US banking licence; it partners with chartered banks (such as The Bancorp Bank and Stride Bank) that hold the deposits. That means Chime shares economics with its partner and depends on it. Monzo and Starling, by contrast, obtained full UK banking licences, which is expensive and slow but lets them keep the spread.

Suppliers and distributors. Card networks (Visa, Mastercard) sit upstream and take a cut of every transaction. Cloud and core-banking vendors supply the plumbing. App stores (Apple, Google) tax challenger acquisition, since challengers live and die by app-store discovery, while incumbents own physical branches nobody can tax.

Regulators. They set the price of entry. A banking licence and its capital requirements are a moatmoatA lasting edge over competitors: a resource, capability or position they cannot easily replicate, letting a firm earn above-average returns over time.View full definition → *for* incumbents: hard to get, expensive to maintain. This is why so many "fintechs" choose to partner rather than become banks.

Why the clever app is not enough

Put it together and the pattern is clear.

Challengers compete on the layer customers *see*: the interface, the instant notifications, the fee transparency. Incumbents compete on the layers customers *never* see: cost of funding, cost of acquisition, and cross-sell across an existing base.

The visible layer wins users. The invisible layer wins profit.

This is why the successful challenger strategy in 2026 is not "better app." It is:

• Become the primary account so balances rise and lending becomes possible.
• Lower funding cost by attracting salary deposits that sit at low interest, not just high-yield savings hoppers.
• Add fee and lending revenue (overdrafts, loans, subscriptions, interchange) rather than living on the spread alone.

Revolut's push into paid subscription tiers and lending, and Monzo's move to lending and paid plans, are both attempts to escape the "cheap app, poor economics" trap. Starling did it partly by lending to businesses and buying mortgage assets to deploy its deposits.

Meanwhile the giants keep coining it, because their advantage is structural. You cannot out-design a deposit franchise built over 100 years.

Key Takeaways

• Profit in banking comes from the spread between cheap deposits and pricier loans. Whoever funds most cheaply and acquires most cheaply wins, regardless of app quality.
• Incumbents own two invisible moats: near-zero-cost sticky deposits (the deposit franchise) and near-zero-cost acquisition through existing relationships and cross-sell.
• Challengers often win the customer but lose the economics when they are a secondary "spending" account with small balances and expensive, high-interest deposits.
• Structure beats software. JPMorgan's roughly 58 billion dollar 2024 net income versus Monzo's recent first profit reflects distribution and funding advantages, not product design.
• The winning challenger playbook is to become the primary account, lower funding cost, and add lending and fee revenue, not simply to build a nicer interface.