Bitso and Mercado Bitcoin announced a commercial partnership on 1 September 2026 that sends Bitso’s Brazil retail customers onto Mercado Bitcoin’s app, keeps Bitso’s institutional desk, and, the firms say, lets a Brazilian company pay Mexico in seconds over Bitso’s regional rails.

The deal is commercial only. Valor Econômico reported there is no equity stake, merger, or acquisition. Both companies posted the same split on 1 September: Mercado Bitcoin and Bitso Brasil framed it as a combined payments-and-investing stack rather than a single new exchange.

What the companies put on the table

Together they claim about 15 million customers in Latin America, including 4.6 million at Mercado Bitcoin and 2 million Bitso customers in Brazil, and say they process around $130 billion a year and support payments in 14 Latin American countries. Those are company figures, repeated by Valor and by Portal do Bitcoin. Treat them as the firms’ own scale language until an audited Brazil volume print exists.

The user-facing change is concrete. Bitso’s Brazilian retail clients will invest through Mercado Bitcoin’s platform and app. MB’s shelf is the draw: cryptocurrencies plus tokenized credit, fractions of court-ordered government debts (precatórios), consortium shares, and startup tokens. BitNotícias, citing the companies, says MB lists more than 800 assets.

Institutional and larger clients stay on Bitso. Across Latin America, Bitso says it serves about 2,000 institutional clients. Nicolás Alonso, Bitso’s general manager in Brazil, told Portal do Bitcoin the firm already handles about 10% of U.S.–Mexico remittance volume, the world’s largest corridor. That 10% line is Bitso’s claim.

Retail migrants get a promotion once they land. From 1 October, Portal do Bitcoin lists an exclusive package on MB: a longer zero-fee window for buying and selling crypto, special pricing on Digital Fixed Income, boosted staking, and a dedicated advisor for high-custody accounts. Mercado Bitcoin published a migration guide the same day; as of 1 September the page was password-protected, which is a reminder to wait for the official email or in-app flow rather than a stranger’s Pix key.

The payments half is the part that moves money

Alonso’s line in Valor is the product claim that matters for anyone running a Brazilian payroll or supplier book: a Brazilian company should be able to make real-time international payments to Mexico in a few seconds, because MB’s platform is being wired to Bitso’s payments infrastructure across Latin America.

Portal do Bitcoin’s company-supplied list is more specific. Brazilian firms would be able to send instant international payments in local or foreign currency, open regulated payment accounts in USD, BRL, MXN, COP, and ARS, and settle cross-border with stablecoins.

Roberto Dagnoni, Mercado Bitcoin’s chairman and CEO, told Portal do Bitcoin that MB is already one of Brazil’s larger stablecoin-payments providers and will now also carry Bitso’s Brazil client flows on Bitso’s infrastructure in Mexico, Argentina, and Colombia. In Valor he called Bitso’s contribution “expertise in payments and the use of stablecoins for international transfers.” Pix-speed reais at one end; Bitso’s peso and dollar-token corridors at the other.

None of the public materials published a fee card, a named stablecoin ticker for the Mexico path, or a live date for the corporate stack. The retail migration has a calendar (benefits from 1 October). The B2B “seconds to Mexico” pitch is still a company promise until a named corridor, asset, and all-in cost show up.

Why this pairing, two months before the BCB gate

The partnership lands just ahead of Brazil’s virtual-asset authorization crunch. Under Instrução Normativa BCB nº 704, PSAVs already operating when Resolutions 519 and 520 took effect must file Phase 1 of their authorization request by 30 October 2026. Valor’s read of the same deadline: from that date, only platforms already established in Brazil that have formally submitted an application may keep operating; new entrants wait for approval. Capital, risk, technology, and compliance bars have risen, and Valor says that pressure is already pushing smaller and foreign startups off the Brazilian map.

Both firms already hold payment-institution licenses. Mercado Bitcoin recently bought Banco Mercantil’s FX and securities brokerage and, in July, took a R$100 million / about $20 million strategic check from Tether. Bitso, founded in Mexico in 2014, had an SCD credit license and later sold that lending book to BYC Capital, per Valor. Dagnoni called the regulated Brazilian market “day one” for the industry once the Central Bank’s rules are fully in force.

This desk has been watching the same squeeze: BCB Resolution 584’s 24-hour hold on large outbound crypto, the H1 2026 crypto-purchase print, and foreign rails such as Interlace’s Brazil office. A local licensed platform plus a regional payments network is one answer to that calendar. It is also consolidation: Bitso is giving up Brazil retail rather than running two consumer apps through the authorization file.

What a Bitso Brazil user should actually do

If you hold crypto on Bitso in Brazil, this is a custodial platform change. Your coins are still someone else’s keys until you withdraw them. Read the official Bitso Brasil and Mercado Bitcoin notices, use only links from the app or the companies’ own domains, and treat unexpected Pix keys, “migration support” chats, and cloned landing pages as theft attempts. MB’s own migration page already flags Pix-key and scam hygiene in its table of contents.

If you wanted Bitso in Brazil because of a specific pair, yield product, or withdrawal habit, check whether that product exists on MB before you need it. If you wanted Bitso because of Mexico, Argentina, or Colombia rails, those stay with Bitso’s institutional and cross-border stack; they are not automatically inside the retail MB app. And if the point of crypto for you is that no exchange can freeze the account, move the coins to a wallet you control first, then decide whether you still need an MB login for Pix on-ramps or tokenized local products.

Takeaway

On 1 September 2026, Bitso and Mercado Bitcoin split Brazil in two: retail investors go to MB, institutions stay with Bitso, and the pair is selling a regulated Brazil-to-Mexico payments path on Bitso’s LatAm rails. The retail calendar is dated. The corporate “seconds to Mexico” claim still needs a ticker, a fee, and a live corridor.

For a Brazilian reader, the useful move is practical. Confirm the official migration steps, do not hand anyone a Pix key that is not yours, and remember that switching from Bitso to Mercado Bitcoin is still leaving coins with a company. This is partnership reporting, not a recommendation to migrate, hold, or send payroll on the new stack.