Rails week in LatAm: Mastercard, Adyen and JPMorgan push deeper into the region

Mastercard🇲🇽 Mexico

Mastercard launches a programme to accelerate contactless acceptance across Mexico.

The initiative gives acquiring banks and large merchants investment, technical resources and operational support to expand tap-to-pay at the point of sale.

Mexico still lags Brazil and Chile on contactless penetration, and acceptance-side subsidies from the networks tend to precede the next leg of card and wallet growth.

Asaas🇧🇷 Brazil

Asaas launches Asaas Smart, a payment terminal built with Adyen, for its 300,000 SME clients in Brazil.

The company projects R$237m in payment volume through the device by the end of 2026.

Asaas, which closed a US$55.6m debt facility last week, is moving from invoicing and Pix collection into in-person acquiring, putting it in direct competition with Stone and PagBank for the small-merchant terminal.

Mercado Libre🇦🇷 Argentina🇧🇷 Brazil🇲🇽 Mexico

Mercado Libre selects J.P. Morgan Payments to scale its Global Selling programme.

The programme lets US businesses sell across six Latin American markets; embedded KYC and KYB from J.P. Morgan sped up seller onboarding in a pilot.

Cross-border inbound e-commerce into the region remains underpenetrated, and a tier-one US bank handling onboarding and settlement lowers the friction for US brands considering Mercado Libre as a channel.

Stripe🇧🇷 Brazil🇲🇽 Mexico🇨🇴 Colombia

Stripe and Plasma team up on multicurrency stablecoin cards with support for BRL, MXN and COP.

Plasma joins as a design partner; cardholders can spend across more than 30 countries with fewer conversions and lower FX costs.

Stablecoin-funded cards denominated in regional currencies are a direct route around correspondent-banking FX for Latin American consumers and freelancers paid in dollars.

AEON adds Chilean bank transfers to its settlement network for AI commerce.

Users can pay in Chilean pesos with crypto through AEON Pay, and the company converts the funds and initiates a local bank transfer to the merchant.

Chile is becoming a test market for crypto-to-local-rail settlement, a pattern worth tracking as agentic checkout flows look for local off-ramps.

Mastercard🇩🇴 Dominican Republic

Mastercard brings its premium World Legend card tier to the Dominican Republic.

Eligible cardholders get travel, dining, entertainment, wellness and golf experiences through The Mastercard Collection.

A small signal, but premium issuance in the Caribbean points to issuers chasing affluent and tourism-linked spend outside the big three markets.

JPMorgan ChasePolicy🇺🇸 United States

JPMorgan and Citi block third-party AI agents from transacting on customer accounts; Mercury lets agents request payments instead.

Jamie Dimon said on the Q3 call that the block covers any third party logging in with customer credentials to pay bills or move money, while read-only data via Plaid still works; Citi has told the FT it applies the same bar, and Bank of America has followed. Mercury, by contrast, now exposes payment requests in its MCP server so an agent can prepare a payment for the user to approve in-app.

Incumbents can block from strength (JPMorgan earned US$15.3bn in the quarter), but the risk is keeping the account and losing the customer to agent-friendly fintechs.

RampRound🇺🇸 United States

Ramp raises US$1.85bn at a US$60bn valuation as annualised revenue passes US$2bn.

Dragoneer led the primary round on 15 October with Thrive Capital, Founders Fund, Sands Capital and Avenir Growth as co-leads; the company reports positive cash flow, 85,000+ customers and annualised purchase volume above US$275bn, up 175% year on year. Ramp also launched Glass, an AI workspace it says 99.5% of its own staff use.

At roughly 30x run-rate revenue and above PayPal and Block on market value, the round sets the bar for AI-native spend-management platforms, including the Latin American challengers.

BVNK🇺🇸 United States🇬🇧 United Kingdom

Mastercard and BVNK launch Global Money Platform, combining fiat and stablecoin accounts through a single API.

The platform bundles conversion, stablecoin-linked cards and local bank payouts, and is the first major integration since Mastercard closed its BVNK acquisition in August; Nuvei and Marqeta are among the first integrators.

Mastercard Send reaches most of the world's banked population, which gives stablecoins a packaged off-ramp into local rails, including Latin America's.

US regulators fine Amex US$350m and Bank of America US$1.21bn for anti-money-laundering failures.

The OCC found that Amex processed about US$13bn of suspected trade-based laundering through card charges over eleven years; Treasury said Bank of America admitted willfully violating the Bank Secrecy Act, failing to report more than US$5bn of suspicious activity on time.

Two record-scale incumbent penalties in one week undercut the narrative that AML risk sits mainly with non-bank fintechs, and will tighten sponsor-bank scrutiny of partner programmes.

The OCC's "debanking" report is read as a political document rather than a supervisory one.

The review of the nine largest national banks ties account closures to vaguely defined reputation-risk policies, while regulators separately encourage enhanced due diligence on ITIN account holders.

For fintechs serving immigrant and cross-border customers, the practical effect is more conservative sponsor-bank onboarding, not less.

Sponsor banking is shifting from technology to risk discipline and scale.

A guest essay by Newline's general manager argues that modern APIs are now table stakes and that sponsor banks will be differentiated by processing reliability and risk management, since consent orders stall partner expansion.

A useful lens for any Latin American fintech weighing a US sponsor-bank relationship.

WiseMarkets🇬🇧 United Kingdom

Wise raises its 2027 revenue outlook after 21% Q2 growth.

Net revenue reached US$739.1m with volumes up 22% to US$71.7bn; the company now expects full-year net revenue growth of 17.5% to 20% and has named former NiCE chief Barak Eilam as chair designate.

Circle🇺🇸 United States

Circle plans to push into about 40 new emerging and developing markets.

USDC circulation rose 19% year on year to US$73.3bn in the second quarter.

Latin America is already one of Circle's fastest-growing regions and will be a natural target for the expansion.

Stablecoin payments provider Noah closes its seed round at US$38m, adding US$16m.

The UK company reports revenue up 538% year to date and will use the proceeds for licences and a New York office.

GCash parent Mynt prices its Philippine IPO at a record US$966m.

The final price of 6.60 pesos per share keeps the listing on track to be the country's largest ever.

A clean wallet IPO in an emerging market is a reference point for the Latin American super-app candidates still waiting on windows.

European deal flow stays biotech-heavy: OMass Therapeutics raises US$310m Series C.

Bain Capital Life Sciences, Forbion and Novo Holdings led, while Microbiotica raised £36m, Holyvolt US$45m and Goodweek a €10.69m seed led by Adara Ventures.

Mercury🇺🇸 United States

Banks' agent blockade sets up the next open-finance standards fight.

Beyond the account restrictions, the week brought a "Know Your Agent" protocol (x401) and Mercury, Meow and Payman exposing agent-ready payment flows; Fintech Brainfood expects the open-banking playbook to repeat, faster.

Why selling to governments remains so hard for European startups,

a Sifted Summit panel write-up on procurement timelines and tech sovereignty.

Inside the black box of AI,

Lenny Rachitsky's conversation with Anthropic interpretability researcher Emmanuel Ameisen on how models plan ahead.

The Death of the Interface,

David Marcus on "headless money" and who captures value when agents decide what we buy.