Key Points
- Brazil’s biggest digital bank and the main banking federation are clashing over interest rates, bad loans and tax bills.
- The fight shows how costly credit remains in Brazil and how fiercely established banks defend their position.
- A failed plan to raise fintech taxes has turned into a wider struggle over who really serves Brazilian customers.
Brazil’s flashiest fintech and its traditional banks are locked in a public fight that goes far beyond ego. On one side is Nubank, the “purple” digital lender with more than 110 million customers.
On the other is Febraban, which represents heavyweight institutions such as Itaú, Bradesco, Banco do Brasil and Santander. What began as a technical debate on how to tax fintechs has become a dispute over who writes the rules of Brazil’s credit market.
Febraban’s latest move was an unusually sharp LinkedIn post. The federation says Nubank charges about 110.9% a year on unsecured personal loans, more than double the roughly 50.5% charged by big banks.
It claims Nubank’s default rates are several times higher and suggests the bank accepts this risk because the returns are so attractive.
The lobby argues that Nubank can do this in part because it has no costly branch network or broad face-to-face service, making it look efficient while pushing risk and debt onto customers.
The federation also highlights Nubank’s holding structure in the Cayman Islands and hints that profits from high Brazilian interest rates may be recycled abroad.
The underlying message is that an overseas-anchored fintech is turning Brazilian debt into private gains while avoiding some of the obligations older banks carry at home.
Behind the polite language sits a simple accusation: this new player talks like a social project but behaves like a very hard-nosed business.
Nubank responds with its own figures and story. It says that in 2025 it generated about 8.22 billion reais in income tax and social contribution, more than any major rival.
The bank argues that, in practice, fintechs already face higher effective tax rates than traditional banks and insists that its model broadened access, bringing millions of poorer and younger Brazilians into the formal system that legacy institutions long ignored.
The immediate trigger for the quarrel was Provisional Measure 1.303, which proposed raising the CSLL tax on fintech profits and narrowing their cost advantage.
When finance minister Fernando Haddad publicly asked why a bank “the size of Nubank” pays less tax than Bradesco, he handed ammunition to those who want digital banks treated exactly like traditional lenders – or more harshly.
The episode is revealing: it shows a country where credit is still painfully expensive, where governments are quick to test new taxes, and where established players push back hard when nimble competitors start giving ordinary customers more choice.