Why can Brazil's refund story fail on bank details even when the tax computation itself was right?

Question

Taxpayers in Brazil often think of a refund as the final proof that the declaration worked and then get stuck when the money does not land. Please explain why bank details still matter so much, why Receita distinguishes between changes before and after the credit attempt, and why this is operational tax compliance rather than a banking side issue.

TaxGuided · Accepted Answer

Taxpayers often stop thinking once the declaration shows imposto a restituir. Receita's own refund guidance shows that this is too early to relax. The refund may be correctly generated while the payment still depends on the bank details linked to the declaration or later corrected through the proper channels. That distinction matters because people tend to blame "the bank" for what is still part of the tax workflow. The payment instructions are embedded in the refund process itself.

So the prob

Why can Brazil's refund story fail on bank details even when the tax computation itself was right?

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