Tax answers in minutes. More time to apply your expertise.

Marble’s research assistant is built specifically for tax professionals, delivering citation-backed answers in minutes. Try the preview below and reclaim time to focus on your clients.

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Marble is building AI agents to transform the tax industry.

Try the preview of our first agent Intelligence. Intelligence is an AI Tax Research assistant designed for citation backed information retrieval, research and memo drafting.

AI built exclusively for tax professionals and firms. Elevate your tax practice with a secure platform designed to enhance accuracy, efficiency, and expert-level work.

Project Context
Organize research and analysis by client or matter, maintaining context across questions, documents, and deliverables.
Federal Tax Analysis
Interpret Internal Revenue Code, Treasury Regulations, and form instructions with AI built to reason through complex tax scenarios.
State & Local Tax Review
Navigate multi-jurisdictional tax considerations with AI that understands state and local tax nuance and interaction effects.
Document-Based Reasoning
Upload client returns, workpapers, or internal memos and receive analysis grounded in your firm’s specific facts and positions.
Tax Library Navigation
Access and explore underlying tax authority directly, with full visibility into source material and regulatory context.
Tax Research
Get citation-backed answers grounded in federal, state, and local tax authority, with transparent reasoning you can trust.
Memo Drafting
Generate client-ready emails, technical memos, and regulatory responses aligned with current tax law and professional standards.

Intelligent Tax Workflows,
Powered by Agentic AI

Navigate federal, state, and local tax codes with AI-powered reasoning, secure document handling, and instant access to authoritative regulations.

Tax Library Navigator

Access the underlying code, regulations, and guidance behind every response. Explore the tax library directly to validate conclusions and deepen your analysis.

Federal Tax Code

Research Internal Revenue Code, Treasury Regulations, and form instructions in one place, with answers grounded in authoritative tax sources.

State & Local Tax Code

Analyze multi-state tax implications with AI designed to account for jurisdictional differences, interaction effects, and evolving state-level guidance.

SOC 2 Compliant

Marble is built with SOC 2 compliant infrastructure, encryption in transit and at rest, and strict data isolation to ensure your firm’s information remains secure and confidential.

Secure Document-Based Research

Upload tax returns, client documents, or internal memos and receive analysis tailored to your specific scenario, with reasoning aligned to authoritative tax sources.

Deliver high-confidence tax advice with
AI built for professional standards

The platform helps tax professionals research, draft, and respond faster with citation-backed answers, integrated authority, and secure client context so your team can focus on judgment, not assembly.

What used to take hours of validating sources now takes minutes.
The citations and reasoning give me confidence I can rely on the answer in real client work.”
Marta Grant
Partner, Tax Controversy
Marble has completely streamlined how I handle multi-state SALT research.
eing able to search federal and all 50 states in one place,saves me hours every week. It’s like having the ultimate research assistant built for real tax work.”
Marta Grant
Partner, Tax Controversy