The platform where tax work gets done.

Marble brings research, intake, analysis, and tax preparation into one intelligent platform. Giving tax professionals AI agents to help move work from question to completion.

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One platform, with intelligence at every step

Marble starts with the client. Research, documents, engagements, and returns stay organized around a shared client profile and in project folders. Facts don’t need to be entered twice, and Marble’s intelligence gets more useful as work moves forward.

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Intelligence

Research complex federal and state tax questions with answers grounded in primary authority and every claim cited. Research can live within a client or engagement, so Marble already understands the relevant facts, keeps the work organized, and can turn its findings into memos, client communications, and the next step in the workflow.

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Intake

Collect documents through a secure client portal with Intelligence and custom checklists tailored to the engagement. Marble understands what arrives, extracts relevant tax data, identifies what’s missing, and adds that information to the client’s context - so the same facts don’t have to be collected or entered again downstream.

Available to Early Access Members

Return Analysis

Upload a return and get it read back to you: the errors, the risks, and the positions worth a second look. Integrate it directly into your workflows.

Coming soon

Returns

Prepare complete returns with AI, backed by Marble’s tax intelligence. Marble completes the return, provides a detailed analysis for professional review, and identifies potential issues and tax opportunities - so you spend less time preparing and more time reviewing and advising.

AI does the work. You stay in control.

Marble handles more of the research, intake, analysis, and preparation behind tax work, while giving you the visibility to review its work, apply your professional judgment, and make the final call.

This tax research project would have taken me at least 32 hours going through the IRS code myself. With Marble, it took two hours.

Miguel C, CPAPartner

  • Automate the busywork

    Spend less time researching, organizing documents, extracting information, and preparing work. Marble handles more of the execution so your team can focus on what requires expertise.

  • Focus on professional judgment

    Marble surfaces the analysis, issues, and opportunities that matter, so tax professionals can spend more time reviewing, deciding, and advising.

  • Understand the work behind the answer

    Citations, source documents, calculations, and detailed analysis make Marble’s work traceable and reviewable - not a black box.

Everything you need to know about Marble

Marble is an AI-powered platform built for tax professionals and accounting firms. Research tax questions, manage client intake, analyze returns, and prepare tax work with intelligence and automation built into every step.

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See what tax work looks like with Marble.

Start researching today or talk to our team about bringing Marble across your firm’s tax workflow.

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