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The IRS has established a significant issue ruling program for cerain corporate transactions (Rev. Proc. 2026-21). This program would not diminish the availability of letter rulings under existing programs. This procedure modifies and amplifies the ruling procedures provided in Rev. Proc. 2026-1, I.R.B. 2026-1, 1, and Rev. Proc. 2026-3, I.R.B. 2026-1, 143.

The significant issue ruling program allows taxpayers to request rulings on one or more issues that:

• are solely under the jurisdiction of the Associate Chief Counsel (Corporate);
• are significant issues, as defined in section 4.02 of Rev. Proc. 2026-21; and
• involve the tax consequences or characterization of a transaction (or part of a transaction) that is described in Code Sec. 332, 351, 355, 368, or 1036.

Significant Issue Ruling Program

Taxpayers may request, and the IRS may issue, a ruling on part of an integrated transaction described in the above provisions, or a ruling on a particular legal issue under a section of the Code or regulations with respect to a transaction (or part thereof) rather than a ruling that addresses all aspects of that section (or any other section) with respect to the transaction (or part thereof).

In addition, the IRS may rule on the tax consequences resulting from integrated transactions described in the above provisions to the extent that a significant issue is presented under related Code sections that address such tax consequences.

A significant issue generally is a germane and specific issue of law, provided that a ruling on the issue would not be a comfort ruling or the conclusion in such a ruling otherwise would not be essentially free from doubt.

The requests for ruling must contain (1) a narrative description of the transaction that puts the significant issue in context; (2) statement identifying the issue; (3) analysis of the solvability of issue; and more.

Effect on Other Documents

Rev. Proc. 2026-1 and Rev. Proc. 2026-3 are modified and amplified.

Effective Date

The significant issue ruling program applies to all letter ruling requests described in section 4.01 of Rev. Proc. 2026-21 postmarked or, if not mailed, received by the IRS after May 5, 2026.

Rev. Proc. 2026-21

Other References:

• Code Sec. 332
• CCH Reference - FED ¶16,052.188

Other References:

• Code Sec. 351
• CCH Reference - FED 16,405.48

Other References:

• Code Sec. 355
• CCH Reference - FED 16,466.923

Other References:

• Code Sec. 368
• CCH Reference - FED 16,753.53

Other References:

• Code Sec. 1036
• CCH Reference - FED 29,702.11