Distribution and Growth

Square launched Square Cash in 2013 as a way to send money to friends by email, and within a few years the product had become Cash App, a phone wallet whose users found one another by "$cashtags". It spread without much paid marketing. Every payment to someone without the app was an invitation to download it, and the company added referral bonuses, "Cash App Fridays" giveaways on social media and a debit card, launched in 2017; the app itself turned up in dozens of hip-hop songs (reported). By December 2025 Cash App had about 59 million monthly transacting users, and in 2025 it produced about $6.34 billion of gross profit, about 61% of the total for its parent, Block (10-K). It earned on debit interchange from a small partner bank exempt from the Durbin cap, fees for instant transfers to bank accounts, bitcoin trading, interest on balances and, increasingly, short-term loans.

The same frictionless sign-up made Cash App a favourite channel for scams, account takeovers and money laundering. In January 2025 the bill arrived. On 15 January 48 state regulators fined Block $80 million over Bank Secrecy Act and anti-money-laundering compliance. The next day the CFPB ordered it to pay up to $120 million of consumer redress and a $55 million penalty, about $175 million in total, over its handling of fraud and disputed transactions, which the bureau called "woefully incomplete" investigations. In April New York's Department of Financial Services added $40 million and an independent monitor, citing a backlog of suspicious-activity reports in 2018–21. Together the actions cost about $295 million. This chapter explains why distribution decides so much in finance, how the strongest channels work, and why the channel that brings customers also decides what kind of risk they bring.