Cash App's Lending Business Just Crossed a Billion in Originations

Cash App started as a Venmo competitor — send money to friends, split restaurant bills, the usual. Then it added direct deposit. Then a debit card. Then stock and Bitcoin trading. Then buy-now-pay-later through the Afterpay acquisition. And now, small-dollar lending.

Each product addition turned Cash App from a feature into a platform. The 55+ million monthly active users who use Cash App as their primary spending account generate transaction data that feeds Block's lending algorithms. The company knows where its users work (direct deposit data), what they spend on (card transaction data), how reliably they receive income (deposit pattern data), and how they manage cash flow (account balance data).

Traditional banks underwrite based on FICO scores and debt-to-income ratios. Block underwrites based on real-time cash flow. For the underbanked population — gig workers, freelancers, hourly wage earners — cash flow data is a far better predictor of repayment than a credit score. This is the same insight that powered SoFi's rise, but applied to a lower-income demographic with even less access to traditional credit.

The US small-dollar lending market — personal loans under $5,000, payday advances, overdraft facilities — generates over $100 billion in annual volume. Most of it is captured by predatory lenders charging 300-400% APR. Cash App's lending products charge 40-60% APR — still high by mainstream standards, but a fraction of the alternatives available to this demographic.

Block's cost of acquiring a lending customer is effectively zero. The users are already on Cash App. The underwriting data already exists. The disbursement is instant through the Cash App account. Compare that to a traditional lender, which spends $200-400 to acquire each lending customer and then waits days to verify income.

At $1 billion in annualised originations, Block's lending business is still tiny relative to the opportunity. We model $5-8 billion in originations by 2028, generating $1.5-2.5 billion in net interest income. At that scale, lending alone would justify 25-30% of Block's current market cap.

The pattern here reminds us of PayPal's Working Capital product, which grew from zero to $2 billion in annual originations within three years before decelerating. Block has a larger user base, better data, and a more captive audience. The ramp should be steeper.

While Cash App gets the growth narrative, the Square seller ecosystem provides $4-5 billion in annual gross profit from merchant payment processing. This is a mature, competitive business growing at mid-single digits — but it generates the cash flow that funds Cash App's expansion.

Square's competitive position against Stripe, Adyen, and Toast has stabilised after years of share loss. The focus on mid-market merchants — restaurants, retail, services — where integrated software plus payments creates switching costs has proven durable. It's not a growth business, but it's a cash cow that the market undervalues by focusing exclusively on Cash App.