Portuguese 
English 
Spanish 
5 min of reading 
0 comments 
Article 42 of the CDC Guarantees Consumers Who Overpaid the Right to Receive Twice the Amount, With Adjustment and Interest.
Consumers who identify an undue charge do not need to “swallow the loss.” Article 42, sole paragraph, of the Consumer Protection Code (CDC) guarantees the so-called repetition of undue payment in double: if you paid what you shouldn’t have, you have the right to receive double the amount paid, plus monetary correction and legal interest.
More than a “trick,” it is a legal mechanism to discourage abusive practices by suppliers and service providers.
In practice, the consumer gains negotiating power: once the undue charge and payment are proven, the path to reclaim the double of what was paid is open except in the specific case of “justifiable error” stipulated in the law itself.
-
The Senate approves a bill that criminalizes misogyny, hatred, or aversion towards women, and includes the crime in the Racism Law with a penalty of up to 5 years.
-
Chamber Approves Bill That Allows Pepper Spray for Women Over 16 and Imposes Strict Rules for Purchase, Possession, and Use as Self-Defense
-
Chamber Approves Law to Combat Leucaena, Fast-Growing Plant That Dominates Land and Threatens Native Species in Various Regions of the Country
-
Asset Division: Know What Cannot Be Divided in Case of Divorce
What Exactly Does the Law Say
The sole paragraph of Article 42 of the CDC is direct: “The consumer charged an undue amount has the right to the repetition of undue payment for an amount equal to double what was paid in excess, plus monetary correction and legal interest, except in cases of justifiable error.” In plain English: paid too much, receive double, corrected.
This provision protects the consumer and penalizes incorrect charges, acting as a brake on the “error that always favors the supplier.” It is not necessary to prove bad faith, making the right more accessible: it is enough to demonstrate the undue charge, the payment, and the absence of a truly justifiable error.
When Double Refund Applies
The rule applies in common situations: duplicate charges, uncontracted services (for example, “embedded” insurance), abusive fees, or billing errors. If payment was made, the repetition in double can be demanded. If no payment was made, it is still possible to request cancellation, correction, and if applicable, damages for moral harm in situations of vexatious charging.
The double refund does not depend on proving the supplier’s intent. What matters is the contrariness to objective good faith: when the company could and should have avoided the incorrect charge and still proceeded with it, the consumer is entitled to double.
Keeping invoices, bills, statements, and protocols is often decisive in winning the dispute.
The Exception: What is “Justifiable Error”
The law itself opens a window: if the supplier proves “justifiable error”, the refund is no longer double and becomes simple (only the excess paid is refunded, with correction and interest). But this exception is interpreted restrictively: mere “system error” repeated, checking failures, or recurring practices hardly qualify as justifiable.
Generally, “justifiable error” refers to isolated errors, promptly corrected, without undue advantage for the company and with transparency to the consumer. When there is a pattern of undue charging or operational carelessness, the justification collapses and the double refund prevails.
How the Consumer Proves the Right (Step by Step)
1) Identify and document the undue charge. Save invoice, bill, proof of payment, screenshots, emails, and protocols. Without proof, there is no reimbursement.
2) Seek an administrative solution. Contact the supplier (SAC and ombudsman), register the case with Procon and consumidor.gov.br. Explicitly mention Article 42 of the CDC and request the repetition in double. Many companies settle amicably to avoid litigation.
3) Did it not work? Go to court. For smaller amounts, Special Civil Court (claims up to 20 minimum wages without a lawyer; above that, with a lawyer). Request: a) double refund, b) correction and interest, c) possible moral damages if there was embarrassment (such as undue disconnection, irregular negative records, or aggressive billing).
4) Organize the timeline. Create a chronological summary: when you were charged, how much you paid, when you complained, how the company responded. Clarity and organization increase your chances.
Examples That Help Understand
Imagine that the consumer paid R$ 300 for a service whose correct value was R$ 150. Excess paid: R$ 150. According to Article 42, the double refund of the excess is R$ 300, plus legal correction and interest.
Another scenario: the company included an uncontracted insurance of R$ 19.90 for 10 months, and the consumer paid. Total excess: R$ 199.00. Double repetition: R$ 398.00, with update and interest.
If the company claims “justifiable error”, it will have to prove that it was an isolated and excusable error, which, in recurring charges, rarely holds.
Common Mistakes That Make Consumers Lose Money
Accepting “exchange for credit” without evaluating the account. Bonuses can fall short of what the law guarantees. The right amount is double what was paid extra, with adjustment.
Giving up due to “low value”. Small repeated charges add up to significant sums. The law applies from cents to high values and interrupting the pattern prevents further losses.
Not keeping proof. Bank statements, proof of payment, and protocols are gold. Without them, everything is just “he said, she said”.
Questions That the Editorial Team Received (And That Are Worth Your Attention)
Who has the right? Any consumer who paid an undue amount in a consumer relationship.
How much will come back? Twice the excess paid, with adjustment and legal interest (except for justifiable error).
Where to file a complaint? First SAC/Procon/consumidor.gov.br; if not resolved, Special Civil Court.
Why does the law exist? To protect consumers and discourage abusive practices, imposing a real cost on the supplier’s error.
Guaranteed rights only work when exercised. The consumer who identifies and proves the undue charge can and should demand the double refund provided in Article 42 of the CDC. Organization of evidence, well-prepared complaints, and if necessary, action in the Court usually resolves efficiently.
And you? Have you recovered amounts charged unduly? Did the company refund double or claim “justifiable error”? Tell us in the comments what the obstacle was (SAC, Procon, Court) and what worked in practice.
Your experience helps other consumers avoid losing money and pressures the market to treat errors as exceptions, not as routine.
-
-
-
-
-
-
17 pessoas reagiram a isso.