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5 min read·Updated July 3, 2026

Basis is an autonomous, agentic AI for professional accounting firms that works alongside accountants and produces finished work — including tax returns — for a human accountant to review and sign.

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Learning Objectives

  • Understand what "agentic accounting" means and how it differs from an accounting chatbot
  • See how an AI agent can produce finished, reviewable work such as a tax return
  • Evaluate why a human accountant's review and professional responsibility remain essential

What Is Basis?

Basis is an agentic artificial-intelligence platform built for professional accounting firms. Rather than answering questions like a chatbot, Basis deploys AI agents that actually perform accounting work — reviewing documents, reconciling accounts, and preparing returns — and hand back finished output for a human accountant to check. The concrete problem it solves is capacity. Accounting firms face a well-documented talent shortage and mountains of repetitive, labor-intensive work; Basis takes on the multistep grind so scarce human experts can focus on review, judgment, and client relationships. In one notable demonstration, a Basis agent completed an end-to-end partnership tax return — the United States Form 1065 — from source documents through to a finished workbook ready for professional review.

The company, Basis, is headquartered in New York and was founded by Matthew Harpe and Mitchell Troyanovsky. In a 2026 Series B round led by Accel alongside GV (Google Ventures), it raised roughly 100 million dollars at a valuation of about 1.15 billion dollars. By that point its agents were in use at a meaningful share of the largest United States accounting firms, positioning Basis as a flagship anchor for the emerging category of agentic accounting.

💡Key Concept

Agentic AI that does the work: A chatbot tells you how to do a task; an agent does the task. Basis strings together the many steps of an accounting job — pulling data, applying rules, preparing schedules — and delivers a completed deliverable rather than advice. The accountant's job shifts from producing the work to reviewing and signing off on it, which is where their professional judgment adds the most value.

🎯Tip

Visit Basis: getbasis.ai — built for professional accounting, tax, and audit firms; enterprise deployment, pricing by quote.

Core Capabilities

Autonomous multistep work

Basis agents execute the sequence of steps a real accounting task requires — gathering documents, reconciling figures, preparing schedules — rather than handling a single isolated prompt, so the output is a finished piece of work.

Tax return preparation

The platform can take a return from source documents through to a completed, reviewable workbook, demonstrated on an end-to-end partnership return (Form 1065). The finished return is prepared for an accountant to review, not filed autonomously.

Works alongside accountants

Basis is positioned as a teammate rather than a replacement: it produces draft deliverables that human accountants review, correct, and approve, keeping the professional firmly in control of the final product.

Firm-scale deployment

Built for professional firms rather than individuals, Basis is designed to slot into how accounting practices operate, which is why it has been adopted across a number of the largest United States firms.

Strengths

  • Produces finished work, not just answers: Agents deliver completed deliverables for review, addressing capacity directly rather than offering guidance.
  • Targets the profession's real pain: It attacks the repetitive, high-volume work squeezing understaffed firms.
  • Demonstrated on complex tasks: Completing an end-to-end partnership return shows ambition beyond simple data entry.
  • Backed and adopted at scale: A 2026 Series B led by Accel and GV, plus use across major firms, signals serious traction.

Limitations & Considerations

  • A human accountant reviews and signs. Basis produces work for review; the accountant must check it and remains professionally responsible for what the firm delivers and files. The AI does not carry that accountability.
  • Accuracy and hallucination risk. Like any AI system, agents can make errors or produce plausible-but-wrong output, so rigorous human review is essential — especially on returns and filings where mistakes carry real consequences.
  • The firm keeps professional responsibility. Regulatory and ethical duties to clients and tax authorities stay with the licensed professionals; delegating the labor does not delegate the responsibility.
  • Enterprise, firm-scale tool. Basis targets professional firms and involves deployment and workflow integration, not a quick self-serve sign-up for an individual.

Best Use Cases

TaskWhy Basis
Preparing returns for reviewProduces a finished workbook, demonstrated on a partnership Form 1065
Clearing repetitive accounting workAgents handle multistep reconciliation and document review
Expanding firm capacityTakes on labor-intensive tasks so staff focus on judgment
Reviewing rather than producingDelivers draft deliverables for accountant sign-off

Getting Started

  1. Identify the high-volume, repetitive workflows in your firm — reconciliations, document review, return preparation — where agents can help most.
  2. Engage Basis to scope a deployment that fits your firm's systems and professional review processes.
  3. Establish a firm review standard so every AI-produced deliverable is checked and signed by a responsible accountant.
  4. Pilot on a defined engagement type, verifying accuracy closely, before broadening the agents' scope.

Key Takeaways

  • Basis is an agentic AI platform for professional accounting firms that produces finished work — including tax returns — for a human accountant to review.
  • It demonstrated an AI agent completing an end-to-end partnership return (Form 1065) and is used across a number of the largest United States firms.
  • Founded in New York, it raised about 100 million dollars in a 2026 Series B led by Accel and GV at roughly a 1.15-billion-dollar valuation.
  • The honest caveats are that a human accountant reviews and signs the work and the firm keeps full professional responsibility.

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