Analysis
Mercury, the business-banking platform built for startups, has crossed $1 billion in annualized revenue, growing roughly 50% year over year, CEO Immad Akhund told Newcomer in an interview published Monday. The company said it now serves more than 450,000 customers and is launching a new payroll product, though it didn't detail pricing or rollout timing.
Founded in 2017 by Akhund, Max Tagher and Jason Zhang -- who'd previously built the mobile ad network Heyzap together -- Mercury launched its business bank accounts in 2019, working with partner banks rather than holding a charter itself. The company has spent the years since building out cards, treasury and now payroll on top of that core account relationship, the same bundling playbook rivals like Brex and Rho have used to deepen wallet share with the same startup and SMB customer base.
How Mercury's growth compares
$1 billion in annualized revenue puts Mercury in rare company among startup-focused fintechs: competitor Ramp, the corporate-card and spend-management platform, disclosed revenue above $2 billion this month. Mercury hasn't disclosed a comparable valuation alongside Monday's milestone, and the figure itself is an annualized run-rate rather than trailing-twelve-month revenue -- a distinction that matters since a single strong month can inflate the annualized number without reflecting a full year of sustained growth.
The interview, part of Eric Newcomer's podcast series, also touched on whether AI agents spending money on behalf of businesses could become a new category of customer for platforms like Mercury, and on a broader cooldown in fintech startup funding since the post-pandemic boom -- context that makes Mercury's organic growth curve stand out more than it might have two years ago.
The risk the interview leaves unaddressed: Mercury's profitability, net revenue retention, and how much of its revenue comes from float income on customer deposits versus subscription and interchange fees. That mix matters because float income moves with interest rates -- a rate-cycle-dependent figure could compress quickly if the Fed cuts aggressively in 2026, even as the headline annualized-revenue number stays flashy. Whether $1 billion holds up as a durable base for payroll and future products, rather than a rate-sensitive peak, is the number to watch next.
