On 20 February 2026 the plenary of the Comisión Nacional Antimonopolio (CNA) denied Visa the acquisition of 51% of the capital of Prosa, the card payments processor owned by six banks and owner of the Carnet brand. The transaction had been announced on 15 December 2023. Among the fintech transactions we follow in the period it is the only one flatly denied by the regulator, and it defines the competition standard for any strategic buyer of payments infrastructure in Mexico.
The transaction
Prosa is owned by Banorte, Santander México, HSBC México, Scotiabank México, Invex and Banjército. It processes more than 10,000 million transactions a year and has operated for more than five decades. Visa agreed to buy 51% of the capital; the consideration was not disclosed.
Resolution CNA-003-2026 denied the concentration on three grounds: the elimination of a direct competitor, since Visa processes and clears transactions in Mexico; the risk to Carnet as a low-cost alternative; and Visa’s access to its competitors’ transaction data. The proposed remedies, according to the CNA, “were neither suitable nor sufficient”. Visa said it would evaluate “all available options”. As of 8 September 2026 the sources record no appeal and no new structure.
Value drivers
A competitor buying a competitor. The CNA starts from the fact that Visa already processes and clears in Mexico. In our reading, that makes the purchase a horizontal concentration rather than the integration of a brand with its processor, and it explains why behavioural remedies were not enough.
Carnet as a public policy asset. The CNA protects Carnet as a low-cost alternative to the international brands. In our reading, the regulator values the asset by what it costs users, not by what it is worth to the buyer.
Transaction data. Access to the data Prosa processes for the banks was an independent objection. A buyer that competes with the asset’s clients faces it in any infrastructure market.
Control at 51%. The Rappi and Banorte precedent shows that a majority is not even required: on 24 May 2026 the CNA fined both a combined MXN 19.9 million for a concentration executed in 2020 without prior authorisation, because Banorte had obtained the power to intervene in decisions of the card business. In the CNA’s words, “this obligation is not an optional step nor a minor formality”.
Twenty-six months of process. Twenty-six months elapsed between announcement and denial. In our reading, the opportunity cost of that period for sellers and buyer is part of the real price of the transaction.
What the market is signalling
Shared bank infrastructure can be sold to a global operator when the buyer does not compete with the asset: TransUnion closed in March 2026 the purchase of 68% of Buró de Crédito from sellers that include four of the same banks. The contrast signals that the competition analysis, not the nature of the asset, decides the outcome.
For strategic buyers with a presence in Mexico, behavioural remedies do not resolve a horizontal overlap. In our reading, the alternatives are structural remedies, minority stakes without control rights or commercial agreements; the last two can also be notifiable concentrations, as the Rappi and Banorte case shows. For fintech acquirers and processors, the survival of Carnet keeps a domestic routing option on the table against the international brands.
G2’s reading for a mandate
In a sell-side with strategic buyers operating in Mexico, the competition analysis defines the buyer list before the process; the term sheet allocates regulatory risk with long-stop dates, termination conditions and obligations during the wait; and any governance rights offered to a minority investor are reviewed against the same standard as a sale of control.
Sources
- Comisión Nacional Antimonopolio, 20 February 2026: La CNA niega la compra de Prosa
- El Financiero, 20 February 2026: Comisión Antimonopolio bloquea compra de Prosa
- Bloomberg Línea, 20 February 2026: Regulador de México niega a Visa compra de Prosa
- Comisión Nacional Antimonopolio, 24 May 2026: CNA impone multa a Rappi y Banorte
- TransUnion, 2 March 2026: TransUnion completes acquisition of majority ownership of Buró de Crédito