The IRS Is Withdrawing Its Partnership Basis-Shifting Rules — Read the Tempo, Not Just the Headline

Key takeaways

• Treasury proposed to remove the January 2025 final regulations (Reg. § 1.6011-18) that identified certain related-party partnership basis-adjustment transactions as reportable transactions of interest — published in the Federal Register on March 6, 2026 (REG-108921-25).
• Once finalized, the removal would apply as if the rules never took effect, eliminating the associated disclosure and penalty exposure under §§ 6707A, 6707, and 6708; Notice 2025-23 already waives those penalties in the interim.
• This coincides with a roughly 25% reduction in the IRS workforce over the past year and rescinded enforcement funding — a genuine drop in examination capacity.
• The substantive rules on partnership basis adjustments are unchanged. Removing a *reporting* requirement is not the same as blessing the underlying transaction, and the courts continue to side with the IRS in basis-shifting and valuation cases.

What is being withdrawn

In January 2025, the IRS finalized regulations identifying certain related-party partnership basis-adjustment transactions — broadly, arrangements that shift basis among related parties to generate depreciation or reduce gain without a corresponding economic outlay — as "transactions of interest." That label is consequential: it makes a transaction reportable, obligates participants and material advisors to disclose it, and exposes failures to disclose to penalties under §§ 6707A, 6707, and 6708.

In March 2026, Treasury reversed course. Proposed regulations published in the Federal Register on March 6, 2026 (REG-108921-25) would remove those rules entirely. The proposal would treat the removal as effective as if the regulations had never taken effect — meaning the disclosure obligations and associated penalties would fall away retroactively to the original applicability date. The agency had already signaled this in Notice 2025-23, which waives the relevant penalties for participants and advisors pending finalization. The stated rationale is deregulatory.

Why the tempo looks like retreat

The withdrawal does not stand alone. It lands in the middle of the most significant contraction of IRS capacity in years.

The agency's workforce fell by roughly a quarter over the past year through separations and reductions, and a substantial tranche of the enforcement funding appropriated in recent years has been rescinded. The Government Accountability Office, in a report released March 16, 2026 (GAO-26-108116), found that staffing losses posed severe risks to IRS operations and that more than 17,000 employees had departed in 2025, leaving return processing and customer service functions understaffed. The examination functions most relevant to sophisticated taxpayers — complex partnership audits, high-wealth examinations — are precisely the ones that depend on experienced personnel the agency has been losing.

Put the withdrawal and the staffing picture together and the surface reading is straightforward: enforcement pressure on aggressive partnership structures is easing. That reading is half right, and the missing half is the part that matters for planning.

Why it is not a green light

Three distinctions keep this from being a reason to relax.

First, a reporting rule is not a substantive rule. The basis-shifting regulations being withdrawn governed *disclosure* — who has to tell the IRS about a transaction. They did not make the underlying transactions legal or illegal. The substantive law on partnership basis adjustments, economic substance, and related-party dealings is unchanged. A transaction that lacked economic substance before the withdrawal lacks it after. Removing the obligation to flag it does not cure it; it only removes one penalty layer and makes the structure less visible to the agency on the front end.

Second, reduced capacity changes odds, not consequences. A leaner IRS examines a smaller fraction of returns, which lowers the probability of audit. It does nothing to reduce the consequence if a particular return is examined — and the agency has publicly reaffirmed its focus on high-income taxpayers and large partnerships even as it shrinks. For a taxpayer who is selected, a thin documentary record is exactly as costly as it would have been with a fully staffed agency. Defensibility is a function of the position, not of the audit rate.

Third, the courts are not retreating. The cases already in the pipeline continue to be decided for the government, and basis-shifting and valuation-driven structures have fared poorly in litigation. Enforcement posture at the agency can shift with an administration; a judicial record does not. A position built to survive a court, not just to evade a notice, is the only one that holds across changes in enforcement priority.

What this means for partnerships and advisors

For taxpayers and advisors who were carrying disclosure exposure under the basis-shifting rules, the withdrawal and Notice 2025-23 are genuine relief on the penalty front, and that relief can be relied on in the interim. That is the narrow, correct takeaway.

The broader takeaway is a caution. The reduction in disclosure obligations and examination capacity is real, but it is a change in the *enforcement environment*, not in the *standards a position must meet*. The right response is not to revisit structures that were too aggressive to disclose comfortably. It is to keep building positions that would survive scrutiny if it came — because enforcement tempo is cyclical, the statute of limitations is long, and the substantive law and the courts have not moved.

Bottom line

Treasury is withdrawing the partnership basis-shifting reporting rules, and the IRS is doing it with far fewer people than a year ago. That lowers disclosure exposure and audit odds — but it does not change what makes a position defensible. The substantive law is the same and the courts are still siding with the government. Read this as a quieter enforcement environment, not a safer one for weak structures.