Decade, a pre-launch Brazilian wealth advisory business founded by two former Nubank executives, has raised $85 million in what it says is the largest seed round ever closed by a Latin American startup. The size is the headline, but not for the reason most coverage has landed on. An $85 million seed into retail wealth advice is not primarily a bet on artificial intelligence (AI) — it is a bet on the direction of Brazilian interest rates.

Two days after Decade came out of stealth, the Banco Central do Brasil’s rate-setting Copom cut the Selic target to 14.00% a year, its fourth reduction since March and the lowest setting since March 2025, per the central bank’s own rate history, series 432, read on August 10, 2026. Set against 12-month IPCA inflation of 4.64% in June, that is still a real risk-free rate close to 9%. Every point shaved off it pushes Brazilian savers out of Certificado de Depósito Interbancário (CDI)-linked deposits and into products that require advice — the exact market Decade has just been capitalised to serve.

A record seed with no product behind it

The round was led by Greenoaks, with Benchmark and Diffusion participating, and was announced on August 4, 2026. Decade is led by Vitor Olivier, formerly Chief Technology Officer at Nubank, alongside Felipe Meneses, the first Brazilian Thiel Fellow and founder of Hyperplane, an AI company Nubank acquired. The product is not live: the company pairs each client with a senior human adviser and a proprietary model that reads the client’s full balance sheet through Brazil’s Open Finance data-sharing rails. Decade cites roughly one-third of Brazilians holding any investments at all and about 7% able to fund their own retirement.

For context on the week, fintech.global counted $673 million across 15 fintech deals to August 7. Decade’s $85 million was joint-second by size — level with Obsidian Security’s $85 million Series D and behind Zenity’s $125 million Series C. It sat in a cohort that also included 10x Banking’s £40 million debt-and-equity raise and Ambrook’s $30 million Series B. A seed cheque clearing a late-stage Series D is a repricing of Latin American risk of the kind last seen when investors returned to Venezuela.

The incumbents were already moving off commission

The distribution economics Decade is attacking are already in motion. XP Inc, the advisor-led platform that broke the banks’ grip on Brazilian retail investing, reported R$1,529 billion in total client assets and 4.79 million active clients for the first quarter of 2026. It has told investors that roughly 25% of individual assets under custody now sit in flat-fee or fee-based arrangements, with a target near 50% within three to five years — while its total adviser headcount, about 18,000 at the end of 2025, edged down around 1% year on year. That is the shape of the trade: assets up, advisers flat, revenue migrating from product commission to recurring fee. Neither XP, BTG Pactual nor the large branch-network banks had publicly commented on Decade’s launch as of August 10.

Brazil already regulates the algorithm

“AI collapses that asymmetry,” Felipe Meneses said of the information gap between institutions and savers. “Decade is AI-native from day one: agents that read every statement, monitor every position, and reason across your entire balance sheet, continuously.” Neil Mehta of Greenoaks framed the thesis more bluntly, telling TNW that “investing never got its turn. Now it will.”

The constraint nobody is discussing is Brazilian securities law, which regulated robo-advice years before this wave. Under CVM Resolution 19/2021, automated systems do not dilute a registered consultant’s liability, and Article 17 requires the source code or algorithm to be available for CVM inspection at the firm’s premises in uncompiled form. Article 16 obliges a consultant to pass any benefit it receives back to the client — Brazil’s rebate ban in all but name. CVM Resolution 179, in force since November 1, 2024, separately forces distributors to disclose commissions before the trade. Register as an adviser and you cannot take rebates; register as a distributor and you must publish them.

That fork, not model quality, will decide whether the $85 million was well spent. Expect Decade to launch fee-based, priced against a falling CDI, because a recurring fee is the only revenue line that survives both regimes. The same logic is showing up elsewhere in the stack, from fee-based platforms to agentic payment rails: when software absorbs the work, the margin moves to whoever holds the client relationship.

Rick Steves

Rick Steves has seen business and economics through many lenses. He joined the financial services industry in 2009, and has been a financial journalist since 2011. He holds a degree in Business Administration and has experience producing real-time news, from both buy-side and sell-side, as well as for retail traders, brokers and service providers. Steves' work has appeared in a variety of online publications including FX Street, NewsBTC, FinanceFeeds, and The Industry Spread. Rick has great interest in the dynamics of the trading industry. The never-ending clash between technology, economics, regulation, and more importantly, the people.