History
Boleto represents a printed ticket or a virtual voucher containing a barcode, payment details, and customer information — that’s all a user needs to complete a transaction. Boleto Bancários can be paid at ATMs, in banks, and via online banking systems. In fact, more than 3.7 billion transactions are generated using Boletos per year, or a quarter of total banking transfers.
It’s worth noting that the system itself does not offer a refund option, not even if you complete the payment via your online banking.