PIX replaces the long list of banking details with a key that points to an account. When a payment is requested, the payer opens a banking app, chooses PIX, scans a QR code, pastes a "copia e cola" code or types a key, checks the recipient's name and confirms. Both sides get a receipt with a transaction identifier within seconds.
There are two practical points that explain why PIX became so popular for online payments in Brazil:
- Immediacy. The recipient sees the money almost at once, so a merchant or a platform can credit an account in real time instead of waiting for a transfer to clear.
- Low friction. There is no card number to type and no card network in the middle. For the payer the action is a tap or a scan in an app they already use every day.
Because the money moves directly between bank accounts, a PIX payment is, by default, final. There is no "chargeback" in the card sense. The Central Bank created the Mecanismo Especial de Devolução (MED) to help victims of fraud, scams and crime try to recover money. A payer has 80 days from the original payment to ask their bank, banks have about seven days to analyse the case, and a confirmed return is due within about 96 hours, in full or in part depending on what remains in the receiver's account. The MED does not cover simple user mistakes such as a wrong key, or commercial disputes with no sign of fraud. In September 2026 the Central Bank also extended from 30 to 80 days the time a receiver has to contest a refund made through the mechanism. Recovery is never guaranteed, which is why caution before you pay matters more than anything after.