Material Advisor Disclosure Requirements: 5 New Rules for 2026

I spent the better part of last Thursday untangling a client’s 2025 crypto lending returns, and somewhere around hour three I realized: every single arrangement I was reviewing would trigger mandatory disclosure under the IRS’s new material advisor rules for 2026. The phone didn’t stop ringing that week—partners at three different firms wanted to know if they were covered, what they needed to file, and how fast the penalties would hit. The short answer: yes, a lot more of us are covered now. The longer answer is why I sat down to write this guide—so you can see the five concrete changes coming down the pipeline and get your practice ready before the first Form 8918 deadline lands.

The 2026 Shift: Why Material Advisor Disclosure Rules Are Changing

For years, the IRS has watched tax-shelter promoters use increasingly creative structures—crypto lending pools, hybrid LLCs, NFT royalty arrangements—to sidestep disclosure. The agency’s response, buried in a notice released in late 2025, is a quiet but sweeping overhaul of the material advisor disclosure requirements. The core idea: if you give tax advice or help structure any transaction that the IRS has flagged as potentially abusive, you are now on the hook for deeper, faster, and more detailed reporting. This isn’t a small tweak. The IRS is expanding who counts as an advisor, what counts as a reportable transaction, and how quickly you need to file. The goal is to catch hidden shelters before they generate millions in unpaid taxes—and to put the compliance burden squarely on the professionals who design and sell them.

One thing I want to be honest about upfront: this is not a “gotcha” rule designed to trap honest advisors. If you’re a typical CPA doing ordinary tax planning, the changes will mostly mean updating your intake forms and adding a calendar reminder for Form 8918. But if you work with clients who have complex structures—especially ones involving digital assets, cross-border entities, or layered ownership—you need to pay close attention.

Rule 1: Expanded Definition of 'Material Advisor'

The first change is the biggest: the IRS is lowering the fee threshold that makes someone a “material advisor.” Under the old rules, you were a material advisor if you received at least $50,000 in fees from an individual (or $250,000 from an entity) for advice on a reportable transaction. Starting in 2026, those thresholds drop to $25,000 for individuals and $100,000 for entities. That means many smaller firms and solo practitioners who never thought of themselves as “tax shelter promoters” now fall squarely under the definition.

But it’s not just the fee amount. The IRS is also expanding the types of professionals covered. Previously, the rules mainly targeted tax attorneys, CPAs, and enrolled agents who structured transactions. Now, the definition includes financial advisors, investment bankers, and even software developers who create tools specifically designed to facilitate reportable transactions. If you help a client set up an LLC that the IRS later determines was part of a listed transaction, you could be considered a material advisor—even if your role was limited to preparing the operating agreement.

In my own practice, I’ve already started asking every new client: “Are you entering any arrangement that involves crypto lending, NFT staking pools, or multi-member LLCs with tiered profit allocations?” If the answer is yes, I flag the file for potential disclosure. It’s an extra step, but it’s saved me from missing a filing deadline more than once.

Rule 2: Tighter Deadlines for Filing Form 8918

Form 8918 is the document you file to tell the IRS you’re acting as a material advisor and to describe the transaction. The old deadline was 30 days after the transaction closed or after you provided the advice. Under the 2026 rules, the deadline is cut to 15 calendar days. That’s a dramatic reduction. If you’re in the middle of tax season and you advise a client on a listed transaction on a Friday, you have two weeks—including weekends—to gather the information, prepare the form, and file it.

Late-filing penalties are also jumping. The base penalty per failure goes from $5,000 to $10,000. For larger firms or repeated violations, it can climb to $100,000 per instance. There’s no longer a grace period for first-time filers. I had a colleague who missed the old 30-day deadline by a week and got hit with a $5,000 penalty. Under the new rules, that same mistake would cost $10,000—and if he missed twice, it would escalate quickly.

Rule 3: New Disclosure Categories for Listed Transactions

The IRS has added five new categories to its list of reportable transactions. The ones getting the most attention are the digital asset categories: crypto lending pools that involve more than 100 participants, NFT tax shelters that use tiered royalty structures to defer income, and “wrapped token” arrangements that create artificial losses through wash-sale-like mechanics. Also new: hybrid LLCs that combine partnership and corporate features to avoid classification, and cross-border “treaty-shopping” structures that exploit gaps in double-taxation agreements.

What does this mean for you practically? If you have any client with a crypto lending pool that has more than 100 lenders, you need to evaluate whether it’s a listed transaction. Same for any NFT project that promises tax deferral through complex royalty splits. The IRS’s list now includes specific examples with dollar thresholds and participant counts, so you can check your client’s facts against the published criteria. I recommend bookmarking the IRS’s “List of Reportable Transactions” page and reviewing it at the start of each quarter.

Rule 4: Enhanced Recordkeeping and Client Identification

Here’s the rule that will create the most extra work for advisors: you must now maintain a detailed list of every client who participated in a reportable transaction, including the ultimate beneficial owner of any entity involved. The old rule only required you to keep records of the client you directly advised. Now, if your client is an LLC owned by a trust that’s owned by a foreign corporation, you need to identify the human being (or beings) behind that chain and document the steps you took to find them.

This is where I’ve seen the most confusion. A real estate developer I work with set up a series of LLCs for a multi-state project. One of the LLCs had a member that was a trust in the Cayman Islands. Under the new rules, I had to trace that trust’s beneficiaries and document them in my records. It took three weeks of back-and-forth with the client’s offshore attorneys. But the alternative—not having that documentation if the IRS audits—could mean a penalty of $50,000 per missing record.

My advice: start now. Ask every client who has an entity structure to provide a complete ownership chart, down to the individual level. Store it in a secure, searchable format. If you wait until the transaction is underway, you’ll be scrambling.

Rule 5: Stricter Penalties and Compliance Reviews

The final piece is the enforcement mechanism. The IRS is rolling out a new compliance review program specifically for material advisors. Starting mid-2026, the agency will select a random sample of Form 8918 filers each year and conduct a desk audit of their records. The audit will check for completeness of client lists, timely filing, and accuracy of transaction descriptions. If the IRS finds deficiencies, it can impose penalties retroactively for all transactions in the same category, not just the one under review.

Penalty amounts are also going up across the board. The maximum penalty for failure to maintain a material advisor list jumps from $100,000 to $250,000 per year. And the IRS has signaled that it will pursue “egregious” cases—like advisors who knowingly fail to file for multiple clients—with criminal referral. That’s a sobering thought for anyone who thinks they can quietly skip the paperwork.

How to Prepare Your Practice for the 2026 Rules

Here’s a checklist I’m using with my own firm. It’s straightforward, and it will save you from scrambling in April 2026:

• Update your intake forms. Add a question: “Are you involved in any crypto lending pool, NFT project, or multi-member LLC with tiered allocations?” If yes, flag the file.
• Set calendar reminders for Form 8918. The new 15-day deadline means you can’t rely on monthly reviews. I have a recurring task every Monday to check for new reportable transactions.
• Audit your current client base. Go through your active clients and identify any who have structures that could be reportable under the new categories. Document your analysis.
• Train your staff. Hold a one-hour webinar covering the new definitions and deadlines. Give everyone a cheat sheet with the fee thresholds and deadline changes.
• Review your recordkeeping system. Make sure you can produce a beneficial ownership chain for any entity client within 48 hours. If you can’t, upgrade your software.

I won’t pretend this is a fun update. But the truth is, the IRS is giving us a clear roadmap. If you follow it—update your forms, file on time, keep good records—you’ll avoid the penalties and keep your practice running smoothly. And if you have a client who’s pushing the boundaries of what’s reportable, this is a good moment to have a frank conversation about the risks. That conversation itself might be the most valuable service you provide this year.