Free tools Windows power users keep installed
One-click scans. No signup required.
The IRS and Treasury have classified 71 previously issued tax guidance documents as obsolete in Notice 2026-58, issued September 29, 2026. That does not mean the agencies repealed 71 current tax laws: the documents became obsolete for different reasons, including repealed statutory provisions, final regulations that now cover an issue, and guidance limited to periods that have ended.
What the IRS did—and what it did not do
Notice 2026-58 identifies 71 revenue rulings, revenue procedures, notices, and announcements previously published in the Internal Revenue Bulletin (I.R.B.) and declares them obsolete. The IRS and Treasury say the documents “no longer provide useful information.” They describe the cleanup as a way to streamline tax administration, reduce the guidance taxpayers and advisers need to review for compliance, and make tax law clearer. Read Notice 2026-58.
“Obsolete” is the notice’s classification of those documents—not a blanket repeal of the tax laws connected to them. The notice gives different explanations for different items. In some cases, Congress repealed the underlying provision; in others, regulations now address the issue, or a transition period, election window, or tax year has passed. The notice does not say that every document had continuing practical force immediately before its classification.
Why the 71 documents became obsolete
The list spans unrelated tax topics, so the number alone does not describe one policy change. The reasons fall into several broad categories:
#1 Best Overall
- Underlying law repealed or changed: Some guidance addressed provisions that no longer apply in their former form.
- Final regulations now cover the issue: Regulations have superseded guidance on certain technical questions.
- A transition, election, or relief period ended: Guidance for a temporary period may no longer be useful once that period closes.
- Limited to past years or circumstances: Some documents addressed transactions or tax years that are no longer current.
The notice covers subjects including 1099-K reporting transition periods; qualified school construction, forestry conservation, and clean renewable energy bonds; estate-tax installment interest and recomputation; passive losses and tax-shelter registration; the former windfall profits tax; bond interest; estate and gift tax rules; pensions and employee benefits; information reporting; business expenses and capitalization; prior-year elections and relief; mortgage securitization; prepaid forward contracts; and cross-licensing. The explanations are document-specific, rather than a finding that every topic in this list has disappeared from current tax law.
Examples of the cleanup
1099-K transition guidance
Notices 2023-10, 2023-74, and 2024-85 addressed transition periods for the minimum reporting threshold under Code section 6050W(e). Notice 2026-58 says the statutory basis for those transition periods was repealed by the One, Big, Beautiful Bill Act. This is a reason those particular transition notices are obsolete; it should not be read as a complete statement of current 1099-K reporting requirements.
Rank #2
Bond programs tied to repealed provisions
Some guidance concerned qualified school construction bonds, qualified forestry conservation bonds, and clean renewable energy bonds. The notice identifies the relevant provisions as having since been repealed.
Issues now addressed in regulations
The notice points to regulations that now address subjects including ISO 9000 certification expenses, underground storage tank replacement costs, incidental repairs, package design costs, and partnership liabilities. The regulatory explanation—not simply the age of the original guidance—is what makes these examples part of the cleanup.
Temporary and historical guidance
Other items dealt with prior-year information-reporting relief, elections whose periods have closed, or transactions limited to earlier years. A document can be obsolete because its circumstances have passed even when the broader tax topic remains relevant.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Does “old” mean the guidance was automatically obsolete?
No. Notice 2026-58 includes documents from 2024 as well as older items, and it provides legal or practical reasons for their status. The notice does not establish age alone as the test. Its explanations turn on what happened to the relevant statute, regulation, time-limited program, or historical circumstance.
Rank #4
- Quick reference learning guide
- Definitions and glossary of terms
- Tax tips, and everything else you need to know about filing
- Common mistakes, understand audits
- Claiming a dependant and more
What taxpayers should do with the notice
If you are checking a current filing position, do not rely on an item solely because it once appeared in the I.R.B. First identify the specific issue and tax year, then consult the current Internal Revenue Code, applicable regulations, and current guidance for that issue. Notice 2026-58 establishes the obsolete status of the listed documents; it does not decide how a particular taxpayer should report a current transaction.
The cleanup is part of an ongoing review. Notice 2026-58 says Notice 2025-22 had obsoleted nine I.R.B. guidance documents and Notice 2025-36 had obsoleted 83. Treasury and the IRS say they anticipate revoking or obsoleting more similar guidance. The CPA Practice Advisor summary also enumerates the affected documents; the IRS notice is the controlling source for their classification and stated reasons.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
