IRS Issues Final Rules Clarifying Basis Treatment in Consolidated Group Transfers

Background on the Regulatory Action

On October 16, 2026, the Internal Revenue Service published final regulations in the Federal Register that revise rules under Sec. 1.1502-80 regarding the application of section 357(c) to members of consolidated groups.

The regulations clarify the treatment of liability assumptions in transfers between consolidated group members. Specifically, they address situations where a transferee assumes liabilities in a section 351 exchange, confirming that section 357(c) does not cause the transferor to recognize gain in such intra-group transactions.

Key Provisions of the Final Regulations

Under the final rules, section 357(c) does not apply to any transaction governed by the intercompany transaction regulations in Sec. 1.1502-13. However, for purposes of computing the transferor's basis in stock received under section 358, liabilities described in section 357(c)(3)(A) but not in section 357(c)(3)(B) are excluded from treatment as money received.

The regulations include an example illustrating the application: where a subsidiary transfers assets with a $30 basis and $40 in liabilities (including $5 qualifying under section 357(c)(3)(A)) to a new subsidiary in a section 351 exchange, the transferor ends up with a $5 excess loss account in the transferee stock after appropriate adjustments.

These provisions build on earlier consolidated return regulations issued in 1992 and respond to questions that arose about the timing of basis reductions for certain excluded liabilities.

Who Is Affected and Practical Implications

The regulations affect corporations that file consolidated federal income tax returns, typically larger businesses. Data referenced by the IRS indicates that such filers represent about two percent of Form 1120 filers but account for approximately 95 percent of total receipts reported on those forms.

The rules aim to clearly reflect the income tax liability of consolidated groups by preventing inappropriate basis reductions that could distort tax outcomes in internal restructurings. They do not impose new reporting burdens beyond existing requirements.

Republic Tax Relief notes that while these regulations address technical basis and liability treatment within consolidated groups, businesses with existing IRS tax debt or disputes unrelated to this announcement may have separate questions about resolution options and should consider contacting the firm for a free, no-obligation initial consultation to evaluate suitability, scope, fees, and availability of private tax-resolution services.

Applicability and Effective Dates

The final regulations are effective October 16, 2026. They apply to transactions occurring in consolidated return years for which the due date of the return, without regard to extensions, is after October 16, 2026.

Earlier transactions remain subject to prior versions of Sec. 1.1502-80 as contained in the April 1, 2026 edition of the regulations. The rules do not apply if the transferor or transferee becomes a nonmember as part of the same plan or arrangement.

Development History and Agency Analysis

The final regulations adopt an approach first proposed in 2001, which was later withdrawn and reproposed in 2024 after an initial modernization effort in 2023. No public comments were received on the 2024 proposal, and no hearing was held.

The IRS certified that the regulations will not have a significant economic impact on a substantial number of small entities, as they primarily affect larger consolidated filers. The changes also do not trigger additional paperwork burdens or federalism implications.