Basis Raises $100M Series B, Becomes Unicorn

Key Takeaways

1. Basis raised $100 million in Series B funding, reaching a $1.15 billion valuation and entering the fintech unicorn club just three years after its founding.
2. The round was co-led by Accel and GV (Google Ventures), with participation from former Goldman Sachs CEO Lloyd Blankfein, Khosla Ventures, and angel investors from OpenAI, Meta, Stripe, Adobe, and Amazon.
3. Basis currently serves approximately 30% of the top 25 U.S. accounting firms and has raised $138 million in total funding to date.
4. The capital will fuel expansion of engineering and machine learning teams, with a focus on building more advanced autonomous agents capable of handling complex tax, audit, and advisory workflows.

Quick Recap

New York-based AI startup Basis has officially closed a $100 million Series B funding round, catapulting the company to a $1.15 billion valuation and unicorn status. The round was led by leading venture capital firm Accel, with co-investment from GV (formerly Google Ventures), former Goldman Sachs CEO Lloyd Blankfein, and existing backer Khosla Ventures. The announcement was made on February 24, 2026, and was widely reported by Reuters, FinTech Futures, and The SaaS News. Co-founded in 2023 by Matthew Harpe and Mitchell Troyanovsky, Basis has positioned itself as the leading agentic AI platform purpose-built for the accounting profession.

The Series B round drew a remarkably high-profile roster of investors. Accel partner Miles Clements, who led the investment, will join the Basis board alongside Khosla Ventures’ Keith Rabois. Beyond the lead investors, new backers include Meta-owned NFDG, Better Tomorrow Ventures, BoxGroup, and Avid Ventures. Notably, individual angel investors from Box, Quora, OpenAI, Adobe, HuggingFace, Stripe, Opendoor, Replit, and Amazon also participated – a signal that senior technologists across Silicon Valley see Basis as a category-defining opportunity.

This latest round brings Basis’ total funding to approximately $138 million, following a $3.6 million seed round in September 2023 and a $34 million Series A led by Khosla Ventures in December 2024. The rapid valuation trajectory –  from stealth-mode startup to unicorn in under three years -reflects intense investor appetite for vertical AI companies that deliver measurable productivity gains in legacy industries. Accel’s Miles Clements commented: “Basis is deploying real agents doing real work in the real economy.

Agentic AI Revolution in Accounting

What sets Basis apart from legacy automation tools is its “agentic AI” architecture. Rather than simple chatbot-style Q&A, Basis deploys what it calls “long-horizon agents” – autonomous AI systems that execute multi-step, complex accounting workflows from start to finish with minimal human oversight. These agents can complete end-to-end partnership tax returns (Form 1065), debug reconciliations, create journal entries, and prepare technical accounting memos.

The company recently demonstrated a landmark capability: the first AI agent to autonomously complete an entire Form 1065 partnership tax return, one of the most complex filings in the U.S. tax code. CPA firms using Basis report 30-50% efficiency gains, with tasks that previously consumed 10-15 hours of manual work being handled autonomously.​

The technology integrates directly with existing client documents and accounting software, and includes an internal debugging agent called Clueso that resolves 78% of engineering issues autonomously. The company has also built an internal team called Atlas focused on deploying AI agents across its own operations in engineering, sales, and talent acquisition.

CPA Crisis and the $75B Accounting Market

Basis’ timing is not coincidental. The U.S. accounting industry is facing a structural labor crisis. Fewer students are pursuing CPA credentials, experienced professionals are leaving the field, and regulatory complexity continues to grow. This talent shortage has created a $75 billion+ market opportunity for AI solutions that can reliably replicate the output of junior and mid-level accountants.

The competitive landscape has intensified dramatically in early 2026. Botkeeper, once a prominent AI bookkeeping player backed by $89.5 million in VC funding, shut down in February 2026, leaving hundreds of accounting firms scrambling for alternatives. Simultaneously, new entrants like Accrual launched with $75 million from General Catalyst, targeting tax preparation and review for Top 100 firms. Meanwhile, Numeric secured $51 million in Series B funding in November 2025 for its AI-powered close management and analytics platform.

Competitive Landscape 

The AI accounting space is crowded but Basis competes most directly with two emerging players: Accrual (tax prep automation) and Numeric (financial close automation). Below is a feature-by-feature comparison:

TechnoTrenz’s Takeaway

I think Basis’ $100 million raise is one of the most significant signals in enterprise AI this quarter  and I’m not saying that lightly. In my experience covering SaaS and AI funding rounds, the speed at which Basis went from a $3.6 million seed to a $1.15 billion unicorn in under three years is genuinely remarkable and speaks to real product-market fit, not just hype.

What excites me most is the “agentic” angle. I’ve seen dozens of AI startups slap a chatbot on top of accounting software and call it innovation. Basis is different – they’re deploying agents that actually do the work, end to end, in high-stakes environments where errors have real consequences. The fact that 30% of the Top 25 firms are already using it tells me this isn’t vaporware. I’m bullish on Basis for three reasons: the accounting labor crisis isn’t going away, the competitive moat from deep accounting domain expertise is hard to replicate, and the investor roster reads like a who’s-who of smart money.