Brazil’s central bank will make crypto exchanges ask individual clients which products they want to hear about before sending them targeted promotions. Resolução BCB nº 602, approved by the bank’s board on 23 October 2026 and published in the Diário Oficial da União on 26 October, is a final rule. Its client-facing duties start on 31 March 2027.

The resolution calls this permission autorização seletiva, or selective authorization. The rule lists Lei nº 14.478 of 2022, Brazil’s virtual-assets law, among its legal bases, and it names virtual-asset service companies, known as SPSAVs, among the institutions it covers.

What changes in your exchange app

From 31 March 2027, a Brazilian exchange has to give you a way to mark the products and services you are willing to receive individual ads and offers about. The exchange must make that option easy to spot in every channel it uses to reach you. You can withdraw your permission whenever you like, and the withdrawal takes effect at once. The exchange also has to remind you every six months that you can withdraw it.

There is a catch for people who skip the setting. Under article 4 of the resolution, if you never mark anything, the exchange may keep sending offers for all of its products.

Who is covered

The rule reaches two groups. One is any BCB-authorized institution advertising credit, virtual-asset services, foreign exchange or payment services to an individual. The other is a list of supervised companies, among them payment institutions, brokers, securities distributors and SPSAVs, advertising any of their own products.

Only clients who are natural persons count, and that includes sole traders. Promotions aimed at companies fall outside Resolução BCB nº 602.

What counts as an offer

The resolution defines an active offer, or oferta ativa, as a commercial message that the institution starts on its own, sent to an identified or identifiable client through any channel, meant to get that client to sign up for, renew or expand a product without having asked for it first. Messages sent by partners acting for the exchange count too, including banking-as-a-service setups and correspondents in Brazil.

The channel list in article 4 is broad. It covers websites, apps, ATMs and digital platforms, then instant messages, email, SMS, push notifications and virtual assistants, then third parties working for the institution. The text says “among others,” so a channel missing from the list is still covered.

Browsing stays possible. If you go looking for a product yourself and finish that search inside the section of the app built for it, the exchange can still show you the product even if you opted out of offers for it.

Extra limits on credit

Article 5 adds tougher rules for credit and post-paid payment products. Offers must use clear language and discourage excessive borrowing. For clients the institution identifies as needing closer care, for example because their income cannot cover basic needs, because age or schooling limits their financial knowledge, or because they keep rolling over card debt, offers need a separate yes for each product, renewed at least yearly, and can only propose moving an existing balance to better terms. Article 8 says every offer must come after the institution has checked that the credit suits the client and that the client can afford it.

These credit clauses matter most to banks and payment companies. An exchange that also sells credit would face them too.

What the institutions must do behind the scenes

Covered institutions must keep the records of these procedures available to the central bank for at least five years and name a director responsible for compliance. Article 12 gives them 120 days from publication to adjust systems, internal controls and customer channels. Under article 14, articles 11 to 13 took effect on publication and everything else applies from 31 March 2027.

The central bank also kept room to say more. Under article 11 it may issue further detail on how permissions and withdrawals must appear in the client journey, so the final look of the setting in your app may still change. The resolution also repealed article 6 of Resolução BCB nº 567 of 4 May 2026, with effect from publication.

What to do

When the setting appears in your exchange, open it and choose. Leaving it blank lets the exchange keep pitching everything. If promotions for products you switched off keep arriving after 31 March 2027, the exchange is not following the rule, and you can complain to it and to the central bank.

PTYcoin has also covered Brazil’s SPSAV authorization deadline under Resolução BCB nº 520 and Coaf reporting under Resoluções BCB nº 588 and nº 589.