Natural, the San Francisco startup building payments infrastructure for AI agents, has secured a credit facility of up to $100 million from Upper90 Capital Management, the company announced on August 19, 2026. The facility gives Natural additional capacity to fund the payments and credit products it sells to companies deploying agents, and it lands one month after the company closed a $30 million Series A.
The structure matters here. Equity builds the product; debt funds the lending. Natural’s thesis is that payments infrastructure at scale is a capital problem as much as a software one: trillions of dollars move globally every day, and a meaningful share of that movement depends on capital being extended before cash ultimately settles. If AI agents transact the way Natural expects, they will require access to credit at a rate that outpaces human-led payments verticals, and someone has to warehouse that exposure. The Upper90 facility is designed to scale alongside that demand, letting Natural support greater payment volume and more deployed credit over time without returning to the equity markets for each increment.
“We believe agents will become the primary financial actors of the global economy, and the infrastructure supporting them will need to operate at a scale that’s difficult to comprehend today,” said Kahlil Lalji, Natural’s CEO and co-founder. “For us, the question wasn’t just who could provide capital today. It was who shared our view of where this is going and could scale with us from our first million dollars of deployed credit to our first billion.”
Dallin Rosdahl, a managing director at Upper90, said the firm believes Natural’s team will lead what it sees as an approaching reshaping of commerce by agentic payments. Upper90 is a hybrid credit-and-equity firm that backs companies with predictable revenue or collateral, positioning its debt as a way to accelerate growth with less dilution. Its portfolio spans receivables, equipment, royalties, time-sensitive refinancings, and strategic acquisitions.
Natural’s $40M Equity Base Came From Fintech’s Operator
The credit facility sits on top of more than $40 million in equity, most of it raised in the $30 million Series A announced on July 20, 2026. Kirsten Green at Forerunner led that round, with continued participation from all major existing investors, when the company was 193 days old.
The cap table includes Forerunner, Human Capital, Abstract, and Bridge alongside Brex, Mercury, Privy, Vercel, Notion, Increase, Unit, and Figure, plus individual operators such as the CEOs of Increase, Browserbase, and HappyRobot and Notion’s co-founder. The Series A also drew individual backers including Notion co-founder Akshay Kothari, Increase CEO Darragh Buckley, Browserbase CEO Paul Klein IV, and HappyRobot CEO Pablo Palafox.
Lalji co-founded Natural with Eric Wang and Walt Leung. The Series A announcement, dated 342 days after the company’s start, put the team at 17 people and hiring across every function.
What Natural Has Shipped and What the Facility Funds
Natural is building 13 products spanning the payments stack for agents, according to its July announcement. Six are in general availability: Wallets, Pay, Request, Transfer, Vaults (one-way accounts agents can move money into but not out of), and Connect, which lets developers build platforms and marketplaces on Natural’s rails. Voice, Accept, and Cards are rolling out over the coming months, with Charge, Credit, Direct, and Billing planned for Q4 2026.
Two of those Q4 products map directly onto the new facility. Credit will let companies issue lines of credit to their agents; Charge will support per-API-call billing on top of Natural wallets. A credit product aimed at agents needs a balance sheet behind it, and the Upper90 line supplies up to $100 million of exactly that. The company describes its approach as owning the primitives directly: ledgering, money movement, multi-bank settlement, multi-currency, fraud and compliance, and agent identity.
Natural is a financial technology company, not a bank. Wallet accounts and banking services are provided by Column N.A., Member FDIC, with deposits FDIC-insured through Column and its sweep program network banks.
The Capital Stack Behind Agentic Payments
The agentic payments category has attracted a string of infrastructure bets this year, from MoonPay’s PayBox wallet, which lets AI agents spend without taking custody, to ongoing debate over where payment logic should sit in an agent-driven economy. Natural’s raise sequence compresses the pattern: a priced equity round to build the product suite, then a debt facility roughly three times the equity total to fund what flows through it.
Global AI recently secured a $441 million senior secured credit facility to expand sovereign AI data centers, and Valar Atomics paired a $1 billion Series B with a $200 million credit facility for reactor production. Natural’s version applies the same logic to payments: the equity pays for the team and the stack, while the debt funds the credit the stack extends.
With six products live, four more scheduled for Q4 2026, and a facility built to scale from its first million dollars of deployed credit toward its first billion, Natural’s near-term execution now runs through the launch of Charge, Credit, Direct, and Billing before year-end.
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