He picked the most boring problem in finance, getting paid, and turned it into a $92M company.
The smile of a man who reads B2B contracts for a living and somehow enjoys it. Ali Hussain, CEO of Tabs.
Ask most people to name the part of a company that AI should fix, and they reach for the flashy stuff: chatbots, copywriting, code. Ali Hussain went the other direction. He went after the email that says "just following up on invoice #4471." The polite nag. The spreadsheet nobody updates. The reason 55% of B2B invoices in the United States are overdue.
Hussain is the CEO and co-founder of Tabs, a New York company building AI agents for the unglamorous back half of finance: billing, collections, and revenue recognition. The pitch is almost aggressively practical. Tabs reads a messy B2B contract, figures out what should be billed and when, sends the invoice, follows up when it's late, and books the revenue correctly. Finance teams call that the contract-to-cash cycle. Hussain calls most of it "the manual era," and in September 2025 he announced its end.
That line landed alongside a $55M Series B led by Lightspeed Venture Partners, with General Catalyst and Primary returning. It brought Tabs to roughly $92M raised in under three years, and it funded the launch of the company's first two AI agents: a Billing Agent and a Collections Agent. The money, Hussain said, goes toward the agent roadmap and toward expanding engineering and AI research in New York.
Founders love an origin story. Hussain's is refreshingly literal: he lived the problem. Before Tabs, he was Chief Operating Officer at Latch, the smart-lock company (later renamed DOOR), where he helped scale the business from its early stage through an IPO. Somewhere in that climb he got an intimate, unwanted education in accounts receivable, the part of finance that quietly breaks as a company grows. Contracts get weirder. Billing terms multiply. The team chasing payments grows headcount instead of leverage.
Tabs likes to call accounts receivable the "forgotten module" of modern finance, the piece everyone skipped while spend management and FP&A software got all the attention. Hussain didn't find that boring. He found it enormous. The market he points to is the roughly $125 trillion in annual global B2B transactions, all of which, eventually, someone has to collect.
The resume reads like someone collecting vantage points. Early on, Hussain worked as a staffer in the U.S. Congress. Then product strategy at Google. Then management consulting at Boston Consulting Group. Then operating, at Latch, through the gauntlet of going public. Public policy, big tech, strategy, and the daily grind of running a company, in that order. It's an unusual path to a billing startup, and it shows up in how he sells.
He doesn't lead with the technology. He leads with the pain. His advice for talking to CFOs is almost anti-sales: find out where it actually hurts. "If something around spend management or reconciliations is working fine, I think they're just fine with it. They don't need an AI strategy there. What they're looking for is, where is most of my pain?" That restraint is rare in a category where every vendor claims to do everything.
Hussain's timing argument is about pressure. CFOs are being asked to keep teams "leaner than ever," he says, while also proving they're "good stewards of the new technologies in this world." Translation: do more with fewer people, and have a credible answer when the board asks about AI. A tool that demonstrably reduces days sales outstanding, the lag between invoice and payment, by roughly 20 days is an easy thing to point to in a board deck.
The customer list helps. Tabs counts AI-era favorites like Cursor and Statsig among more than 200 customers. The company reports 5X ARR growth, says customers automate over 80% of manual billing tasks, and claims one customer, Statsig, cut its monthly close time by nearly half. Tabs says it's on track to automate more than $1 billion in annual invoice volume. These are the kinds of numbers that make the boring problem look like a very large business.
Tabs is not a one-person show, and Hussain is quick to say so. He co-founded it with Rebecca Schwartz and with CTO Deepak Bapat, who ran software at Latch, the same company where Hussain was COO. The two had already watched a company scale together; they just decided to fix the part that hurt. Hussain's stated philosophy for building is to assemble teams "where collective capabilities exceed individual strengths," dividing work by who's best at the demand side, the product, and the operational reality of getting software adopted inside a finance department.
There's a through-line in how he talks: clarity over jargon. His own rule for fundraising was to "communicate in a way that almost anyone can understand, not just VCs or technologists." It's a tell. The whole company is a bet that the most valuable thing you can do with AI right now is take something tedious and make it disappear, quietly, in the background, while the humans go do something else.
He still circles back to where he started. Hussain returned to his old high school, St. Paul Academy and Summit School, class of 2007, to speak to students about "Planning Your Future in the World of AI." It's a fitting venue for a founder whose entire thesis is that the future of work is less work, at least the kind nobody wanted to do in the first place.
Before fintech, Hussain worked inside the U.S. Congress. The billing startup is a long way from Capitol Hill.
His CTO and co-founder, Deepak Bapat, ran software at Latch, the same company where Hussain was COO.
Tabs frames its market as the roughly $125 trillion in annual global B2B transactions.
AI-era favorites Cursor and Statsig are customers. One cut its monthly close time by nearly half.
He went back to his high school to talk to students about "Planning Your Future in the World of AI."