A Unified Library for Federal and Multi-State Tax Research
Access continuously updated primary-source law. Navigable, updated, and built for how tax professionals work.
Tax Library is the most navigable collection of U.S. tax law on the web. It’s also the source powering every cited answer in Marble Intelligence.
Find What You Need, Fast
Browse the tax code or search for what you need. Intelligent matching and autocomplete get you to the right provision without memorizing section numbers or learning rigid query syntax.
Read Provisions in Context
Navigate from title to chapter to section with structured table of contents. Context matters in tax law, and Tax Library keeps surrounding provisions and code structure visible.
Share a Link to Any Page
Tax Library is free and publicly accessible. Send a direct link to any page, whether it's for a colleague, a client, or your own reference. No login required to read it.
Deliver high-confidence tax advice built for professional standards.
Future-Ready Practice
Stay ahead of the curve by bringing secure, professional-grade AI into your workflow now, not later.
More Time for Strategy
Spend less time chasing answers and more time delivering high-value planning and advisory work without adding headcount.
A Better Client Experience
Provide faster answers, clearer guidance, and more proactive insights to your clients.
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.