PayPal’s decision to add Pix to checkout for small and medium-sized businesses in Brazil reflects how deeply the payment method is now embedded in the country’s commerce. According to Central Bank data cited by PayPal, more than 170 million individuals, representing over 90% of Brazil’s adult population, have already used Pix.
The direction of use is also moving further into commerce. An EBANX analysis based on Central Bank of Brazil data found that person-to-business Pix payments overtook person-to-person payments for the first time in September 2025. The Central Bank of Brazil has described Pix as one of the country’s primary payment methods, while its retail payments data shows Pix was the fastest-growing payment instrument in Brazil in 2024, with transaction volume increasing by 52%.
At this scale, speed is only one part of the experience. Fraud protection, recovery, dispute handling and customer support all influence whether people continue to trust the payment method when something goes wrong.
In a real-time environment, there is less time to pause, question or recover a suspicious transaction. That puts more pressure on the systems around the payment: the risk signals used to spot unusual behaviour, the controls applied at the point of payment, and the support available if a customer needs help.
When speed becomes normal
Brazil is useful because Pix has already reached the point where instant payments are routine. Consumers expect it to work quickly, merchants expect it to be available, and financial institutions have to support it at scale. That is a different operating environment from one where instant payments are still occasional or limited to particular use cases.
The strength of real-time payments is also what makes fraud harder to manage. Faster settlement reduces the time available to question, pause or recover a suspicious transaction. Older payment models often left more room to intervene before the customer felt the impact. In a real-time model, that margin is much smaller.
Brazil’s response has reflected that need to adapt the system as Pix matured. The Central Bank of Brazil has introduced protections including the Special Return Mechanism, which supports fund returns in fraud cases, and precautionary blocking, which allows funds to be held temporarily where suspected fraud is identified. These measures show that fraud controls cannot sit outside the rail once real-time payments become part of daily life.
Fraud is felt as a customer experience problem
At CI&T, we wanted to understand how trust shows up in everyday use. With eLife, we looked at digital sentiment in the UK and Brazil around payments, focusing on how people respond to speed, usability and fraud risk.
One theme came through clearly: adoption, trust and usability sit very close together.
Pix is widely valued for speed, simplicity and acceptance. But confidence can weaken quickly when the experience becomes uncertain. In the Brazil analysis, users raised concerns around scam disputes, refund delays, instability at the point of payment, and acceptance friction in places where Pix is expected to work smoothly.
That is where the fraud discussion moves beyond detection. A system can be technically robust and still feel unreliable if the route through a problem is unclear. If someone is unsure whether money has gone through, if support is hard to find, or if a dispute process is difficult to follow, confidence drops quickly.
Customers do not experience payments in separate operational layers. They do not distinguish between fraud controls, payment confirmation, support, refunds and recovery. They experience one journey and judge the institution accordingly.
For banks, fintechs and merchants, that changes the design challenge. Real-time payment protection is not only about spotting the bad transaction. It is about making sure the ordinary transaction still feels simple, while the unusual one is handled quickly, clearly and fairly.
Why the operating model matters
The harder adjustment sits in the operating model around the payment.
As real-time payments scale, institutions need to recognise unusual behaviour quickly without making every customer go through unnecessary checks. They need risk signals that can be interpreted in context, rather than blunt controls that slow down the whole journey. They also need support and recovery processes that can move at a pace customers now expect.
This is where technology, operations and customer experience have to work together. A fraud warning that arrives too late is of limited use. A blocked payment with no clear explanation can damage trust even if the decision was reasonable. A refund process that takes too long can make a fast payment method feel risky.
The institutions that cope better are usually those that treat fraud response as part of the payment journey itself. They can pick up unusual behaviour early, apply proportionate controls, explain what is happening, and support recovery without turning every payment into a high-friction event.
What other markets should take from Pix
There is a useful comparison with the UK and other markets moving towards broader account-to-account and real-time payment adoption. Consumers are increasingly ready for fast, mobile-first payments, but confidence in protection, familiarity and consistency is still catching up.
That gap between capability and trust will matter more as real-time payments move further into commerce. When instant payments are used mainly for transfers between individuals, the expectations are different. When they become more common at checkout, in merchant payments, subscriptions, bills or cross-border use cases, the trust model has to be strong enough for a wider range of situations.
Pix shows how quickly that point can arrive. Its growth has forced institutions, regulators and service providers to work through what happens when instant payments become ordinary behaviour. Speed affects the whole environment in which fraud has to be managed, even after stronger controls are added.
Other markets do not need to copy Brazil feature by feature. Regulation, infrastructure and fraud patterns will differ. But the structural lesson is relevant everywhere: once money moves in seconds, fraud operations, support and recovery have to keep pace.
As Pix moves further into commerce, including merchant checkout through providers such as PayPal, the demands around trust and fraud response become harder to ignore. Real-time payments are often introduced as a speed story. Brazil shows that the mature phase is different. At scale, the real test is whether customers still feel protected when something goes wrong.
Author: Young Pham, Global Head of Financial Services AI at CI&T
