Banco Inter Argentina Launch: US Investing From US$5 as CEO Vows to Compete

ARGENTINA · BUSINESS

Brazil’s most aggressive digital bank is now open for business in Argentina. The Banco Inter Argentina offer is aimed squarely at the country’s dollar-hungry savers: one app that converts pesos into real US stocks, bonds and funds — and a CEO who says he is not afraid of Mercado Pago.

Pesos in, Wall Street out

The mechanics are built for a country that thinks in dollars. Users transfer pesos from any Argentine bank or wallet into the Inter app, execute a contado con liquidación conversion — the market-rate swap long used by Argentines to move money abroad — and fund a US-based Global Investment Account. From there they can buy fractional US shares from US$5, American ETFs, Treasury bonds, money-market funds and corporate and Latin American sovereign bonds, with securities lending available as well.

Santiago Stel, Inter’s chief financial officer, argues the model undercuts the traditional workaround — CEDEARs, the locally listed depositary receipts that track US stocks but carry extra layers of cost. “With Inter, when you buy shares, you buy the shares in the United States; you access the asset directly,” he said at the Buenos Aires launch, adding that transfers are immediate, with no account maintenance fee and no minimum transaction size.

The local rails come from Grupo BIND, which supplies the banking-as-a-service infrastructure, while Inter keeps the app, the brand and the client relationship. An in-app financial social network called Forum layers educational content on top. “Many Argentines are looking for ways to stay invested in dollars and diversify in global markets; our opportunity is to make that access simple, digital and transparent,” said Menin. “Our vision is to build the region’s most relevant borderless financial platform.”

Taking on Mercado Pago and Ualá

The landing zone is crowded. Mercado Pago dominates Argentine digital payments, Ualá has spent years building a fintech user base, and traditional banks and digital brokers guard the investment business. Menin, who flew in for the presentation, leaned on the company’s origin story: when Inter began its digital push in Brazil, five big banks controlled 90 to 95% of the market — and Inter still carved out roughly 10% share with fee-free, technology-heavy products. “We succeeded even with that competition, and we are confident we can compete in Argentina and in the United States,” he said. “Competition is healthy; it helps us improve our products.”

His structural argument is cost. With no branches and a lean staff, Inter’s cost per active client runs about 13 reais (US$2.5) a month — “a fraction of what the banks have,” in Menin’s words. The roadmap, if Brazil is any guide, is relentless product stacking: QR payments, a prepaid card, international transfers and Pix payments for Argentines traveling to Brazil are next, with credit and eventually mortgages on the horizon. The Menin family also controls MRV, one of Brazil’s largest homebuilders, and mortgage lending is a flagship Inter product in both Brazil and the US.

A 30-year bet, whoever governs

Menin was at pains to frame the move as apolitical. “For us, being in Argentina is independent of the relationship this government or the next one has with Brazil. We are thinking about building something big and successful over the next 10, 20 or 30 years,” he said, pointing to tourism, trade ties and Argentina’s deep technology talent. The timing is notable: Brazil votes for a president next month, and Argentina’s own economic liberalization under Javier Milei has revived foreign interest in its financial market — the same reopening that let YPF tap global investors with a US$1.2 billion bond for Vaca Muerta, as The Rio Times reported this week.

The parent company arrives in rare form. Inter&Co, listed on Nasdaq since 2022 after a 2018 IPO in São Paulo, posted record quarterly profit of 421 million reais (US$83 million) in the second quarter with a 16.3% return on equity, as The Rio Times reported in August. The group serves 45.3 million clients — 26.4 million of them active — holds assets above 100 billion reais (US$19.6 billion) and offers more than 180 products. Founded in 1994 by Rubens Menin as Intermedium, the bank is now run globally from Miami by his son João Vitor, whose fortune Forbes estimates at US$1.8 billion.

Banco Inter Argentina: what to watch next

Three markers will show whether the landing sticks. First, user numbers: how quickly Argentines trust a Brazilian app with their dollar savings. Second, the product cadence — the prepaid card and QR payments would move Inter from an investment tool into daily-money territory, where Mercado Pago is strongest. Third, the credit question: consumer lending in Argentina is reviving after years of high inflation, and Inter’s mortgage ambitions would put it in direct competition with the very banks it says it can undercut. Nubank tried Argentina in 2019 and retreated within months; Inter is betting its balance sheet, and its patience, are built for longer.

Background: Auto Draft.

More: Argentina news in English, every day from The Rio Times.

Frequently Asked Questions

Sources: La Nación; Agroempresario (Forbes); Bloomberg Línea; company statements. Currency conversions use market rates on September 10, 2026: about 5.10 reais per US dollar (Yahoo Finance).

This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error · Editorial responsibility: Matthias Camenzind, Editor-in-Chief