Treasury Regulations · 26 CFR
§ 1.358-6. Stock basis in certain triangular reorganizations.
Regulation text, no changes From the eCFR, current as of October 15, 2026. The eCFR is an authoritative but unofficial editorial compilation of the Code of Federal Regulations; the official text is the annual CFR on govinfo. Compare it with this section on ecfr.gov (external site) or the official annual CFR on govinfo (external site).
Regulation under 26 U.S.C. § 358
Cite as 26 CFR § 1.358-6
At a glance
Read from the text and its source citation. Not part of the regulation.
- Status
- In the current eCFR
- Issued
- December 21, 1995 by T.D. 8648
- Last amended
- March 28, 2016 by T.D. 9759
- Issued under
- 26 U.S.C. § 358
- Length
- 3,486 words · about 15 min to read
- Cross-references
- cites 6 Code sections and 7 regulations; cited by 16
(a) Facts. T has assets with an aggregate basis of $60 and fair market value of $100 and no liabilities. Pursuant to a plan, P forms S with $5 cash (which S retains), and T merges into S. In the merger, the T shareholders receive P stock worth $100 in exchange for their T stock. The transaction is a reorganization to which sections 368(a)(1)(A) and (a)(2)(D) apply.
(b) Basis adjustment. Under § 1.358-6(c)(1), P's $5 basis in its S stock is adjusted as if P acquired the T assets acquired by S in the reorganization directly from T in a transaction in which P's basis in the T assets was determined under section 362(b). Under section 362(b), P would have an aggregate basis of $60 in the T assets. P is then treated as if it transferred the T assets to S in a transaction in which P's basis in the S stock was determined under section 358. Under section 358, P's $5 basis in its S stock would be increased by the $60 basis in the T assets deemed transferred. Consequently, P has a $65 basis in its S stock as a result of the reorganization.
(c) Use of pre-existing S. The facts are the same as paragraph (a) of this Example 1, except that S is an operating company with substantial assets that has been in existence for several years. P has a $110 basis in the S stock. Under § 1.358-6(c)(1), P's $110 basis in its S stock is increased by the $60 basis in the T assets deemed transferred. Consequently, P has a $170 basis in its S stock as a result of the reorganization.
(d) Mixed consideration. The facts are the same as paragraph (a) of this Example 1, except that the T shareholders receive P stock worth $80 and $20 cash from P. Under section 358, P's $5 basis in its S stock is increased by the $60 basis in the T assets deemed transferred. Consequently, P has a $65 basis in its S stock as a result of the reorganization.
(e) Liabilities. The facts are the same as paragraph (a) of this Example 1, except that T's assets are subject to $50 of liabilities, and the T shareholders receive $50 of P stock in exchange for their T stock. Under section 358, P's basis in its S stock is increased by the $60 basis in the T assets deemed transferred and decreased by the $50 of liabilities to which the T assets acquired by S are subject. Consequently, P has a net basis adjustment of $10, and a $15 basis in its S stock as a result of the reorganization. For certain triangular reorganizations where the surviving corporation (S or T) is foreign, see § 1.367(b)-13.
(f) Liabilities in excess of basis. The facts are the same as in paragraph (a) of this Example 1, except that T's assets are subject to liabilities of $90, and the T shareholders receive $10 of P stock in exchange for their T stock in the reorganization. Under § 1.358-6(c)(1)(ii), the adjustment under § 1.358-6(c) is zero if the amount of the liabilities which S assumed or to which the T assets acquired by S are subject exceeds the aggregate adjusted basis in T's assets. Consequently, P has no adjustment in its S stock, and P has a $5 basis in its S stock as a result of the reorganization.
(a) Facts. T has assets with an aggregate basis of $60 and a fair market value of $100 and no liabilities. P has a $110 basis in its S stock. Pursuant to a plan, S merges into T with T surviving. In the merger, the T shareholders receive $10 cash from P and P stock worth $90 in exchange for their T stock. The transaction is a reorganization to which sections 368(a)(1)(A) and (a)(2)(E) apply.
(b) Basis adjustment. Under § 1.358-6(c)(2)(i)(A), P's basis in the T stock acquired is P's $110 basis in its S stock before the transaction, adjusted as if T had merged into S in a forward triangular merger to which § 1.358-6(c)(1) applies. In such a case, P's $110 basis in its S stock before the transaction would have been increased by the $60 basis of the T assets deemed transferred. Consequently, P has a $170 basis in its T stock immediately after the transaction.
(c) Reverse triangular merger that also qualifies under section 368(a)(1)(B). The facts relating to T are the same as in paragraph (a) of this Example 2. P, however, forms S pursuant to the plan of reorganization. The T shareholders receive $100 worth of P stock (and no cash) in exchange for their T stock. The T shareholders have an aggregate basis in their T stock of $85 immediately before the reorganization. The reorganization qualifies as both a reverse triangular merger and a reorganization under section 368(a)(1)(B). Under § 1.358-6(c)(2)(ii), P may determine its basis in its T stock either as if § 1.358-6(c)(2)(i) applied to the T stock acquired, or as if P acquired the T stock from the former T shareholders in a transaction in which P's basis in the T stock was determined under section 362(b). Accordingly, P may determine a basis in its T stock of $60 (T's net asset basis) or $85 (the T shareholders' aggregate basis in the T stock immediately before the reorganization).
(d) Allocable share in a reverse triangular merger. The facts are the same as in paragraph (a) of this Example 2, except that X, a 10% shareholder of T, does not participate in the transaction. The remaining T shareholders receive $10 cash from P and P stock worth $80 for their T stock. P owns 90% of the T stock after the transaction. Under § 1.358-6(c)(2)(i)(A), P's basis in its T stock is P's $110 basis in its S stock before the reorganization, adjusted as if T had merged into S in a forward triangular merger. In such a case, P's basis would have been adjusted by the $60 basis in the T assets deemed transferred. Under § 1.358-6(c)(2)(i)(B), however, the basis adjustment determined under § 1.358-6(c)(2)(i)(A) is reduced in proportion to the percentage of T stock not acquired by P in the transaction. The percentage of T stock not acquired in the transaction is 10%. Therefore, P reduces its $60 basis adjustment by 10%, resulting in a net basis adjustment of $54. Consequently, P has a $164 basis in its T stock as a result of the transaction.
(e) P's ownership of T stock. The facts are the same as in paragraph (a) of this Example 2, except that P owns 10% of the T stock before the transaction. P's basis in that T stock is $8. All the T shareholders other than P surrender their T stock for $10 cash from P and P stock worth $80. P does not surrender the stock in the transaction. Under § 1.358-6(c)(2)(i)(C), P may treat its T stock owned before the transaction as acquired in the transaction or not. If P treats that T stock as acquired in the transaction, P's basis in that T stock and the T stock actually acquired in the transaction equals P's $110 basis in its S stock before the transaction, adjusted by the $60 basis of the T assets deemed transferred, for a total basis of $170. If P treats its T stock as not acquired, P retains its $8 pre-transaction basis in that stock. P's basis in its other T shares equals P's $110 basis in its S stock before the transaction, adjusted by $54 (the $60 basis in the T assets deemed transferred, reduced by 10%), for a total basis of $164 in those shares. See § 1.358-6(c)(2)(i)(A) and (B). Consequently, if P treats its T shares as not acquired, P's total basis in all of its T shares is $172.
(a) Facts. T has assets with a fair market value of $100 and no liabilities. The T shareholders have an aggregate basis in their T stock of $85 immediately before the reorganization. Pursuant to a plan, P forms S with $5 cash and S acquires all of the T stock in exchange for $100 of P stock. The transaction is a reorganization to which section 368(a)(1)(B) applies.
(b) Basis adjustment. Under § 1.358-6(c)(3), P adjusts its $5 basis in its S stock by treating P as if it acquired the T stock acquired by S in the reorganization directly from the T shareholders in exchange for the P stock in a transaction in which P's basis in the T stock was determined under section 362(b). Under section 362(b), P would have an aggregate basis of $85 in the T stock received by S in the reorganization. P is then treated as if it transferred the T stock to S in a transaction in which P's basis in the S stock was determined under section 358. Under section 358, P's basis in its S stock would be increased by the $85 basis in the T stock deemed transferred. Consequently, P has a $90 basis in its S stock as a result of the reorganization.
(a) Facts. T has assets with an aggregate basis of $60 and fair market value of $100 and no liabilities. S is an operating company with substantial assets that has been in existence for several years. P has a $100 basis in its S stock. Pursuant to a plan, T merges into S and the T shareholders receive $70 of P stock provided by P pursuant to the plan and $30 of cash provided by S in exchange for their T stock. The transaction is a reorganization to which sections 368(a)(1)(A) and (a)(2)(D) apply.
(b) Basis adjustment. Under § 1.358-6(c)(1), P's $100 basis in its S stock is increased by the $60 basis in the T assets deemed transferred. Under § 1.358-6(d)(1), the $60 adjustment is decreased by the $30 of cash provided by S in the reorganization. Consequently, P has a net adjustment of $30 in its S stock, and P has a $130 basis in its S stock as a result of the reorganization.
(c) Appreciated asset. The facts are the same as in paragraph (a) of this Example, except that in the reorganization S provides an asset with a $20 adjusted basis and $30 fair market value instead of $30 of cash. The basis results are the same as in paragraph (b) of this Example. In addition, S recognizes $10 of gain under section 1001 on its disposition of the asset in the reorganization.
(d) Depreciated asset. The facts are the same as in paragraph (c) of this Example, except that S has a $60 adjusted basis in the asset. The basis results are the same as in paragraph (b) of this Example. In addition, S recognizes $30 of loss under section 1001 on its disposition of the asset in the reorganization.
(e) P stock. The facts are the same as in paragraph (a) of this Example, except that in the reorganization S provides P stock with a fair market value of $30 instead of $30 of cash. S acquired the P stock in an unrelated transaction several years before the reorganization. S has a $20 adjusted basis in the P stock. The basis results are the same as in paragraph (b) of this Example. In addition, S recognizes $10 of gain on its disposition of the P stock in the reorganization. See § 1.1032-2(c).
[T.D. 8648, 60 FR 66079, Dec. 21, 1995; 61 FR 11547, Mar. 21, 1996; T.D. 9243, 71 FR 4282, Jan. 26, 2006; T.D. 9424, 73 FR 53947, Sept. 17, 2008; 73 FR 62204, Oct. 20, 2008; T.D. 9759, 81 FR 17074, Mar. 28, 2016]
Cross-references
Computed from the citations in the text of 26 CFR.
Code sections it cites
- § 1001 Determination of amount of and recognition of gain or loss
- § 362 Basis to corporations
- § 368 Definitions relating to corporate reorganizations
- § 358 Basis to distributees
- § 357 Assumption of liability
- § 351 Transfer to corporation controlled by transferor
Regulations it cites
- § 1.362-3 Basis of importation property acquired in loss importation transaction.
- § 1.362-4 Basis of loss duplication property.
- § 1.367(b)-13 Special rules for determining basis and holding period.
- § 1.1032-2 Disposition by a corporation of stock of a controlling corporation in certain triangular reorganizations.
- § 1.1502-30 Stock basis after certain triangular reorganizations.
- § 1.1502-31 Stock basis after a group structure change.
- § 1.367(b)-4 Acquisition of foreign corporate stock or assets by a foreign corporation in certain nonrecognition transactions.
Cited by 16 other regulations
- § 1.355-6 Recognition of gain on certain distributions of stock or securities in controlled corporation.
- § 1.355-8 Definition of predecessor and successor and limitations on gain recognition under section 355(e) and section 355(f).
- § 1.362-3 Basis of importation property acquired in loss importation transaction.
- § 1.362-4 Basis of loss duplication property.
- § 1.367(a)-7 Outbound transfers of property described in section 361(a) or (b).
- § 1.367(a)-8 Gain recognition agreement requirements.
- § 1.367(b)-3 Repatriation of foreign corporate assets in certain nonrecognition transactions.
- § 1.367(b)-4 Acquisition of foreign corporate stock or assets by a foreign corporation in certain nonrecognition transactions.
- § 1.367(b)-10 Acquisition of parent stock or securities for property in triangular reorganizations.
- § 1.367(b)-13 Special rules for determining basis and holding period.
- § 1.368-1 Purpose and scope of exception of reorganization exchanges.
- § 1.368-2 Definition of terms.
- § 1.1032-2 Disposition by a corporation of stock of a controlling corporation in certain triangular reorganizations.
- § 1.1400Z2(a)-1 Deferring tax on capital gains by investing in opportunity zones.
- § 1.1502-30 Stock basis after certain triangular reorganizations.
- § 1.6038B-1 Reporting of certain transfers to foreign corporations.
Amendment history
From the source citation at the end of the section, newest first. T.D. is a Treasury decision; FR is the Federal Register.
- Amended by T.D. 9759 (81 FR 17074)
- Amended (73 FR 62204)
- Amended by T.D. 9424 (73 FR 53947)
- Amended by T.D. 9243 (71 FR 4282)
- Amended (61 FR 11547)
- Issued by T.D. 8648 (60 FR 66079)
Where it sits in 26 CFR
- Subchapter A Income tax
- Part 1 Income taxes
- Effects on shareholders and security holders
Nearby sections
- § 1.358-2 Allocation of basis among nonrecognition property.
- § 1.358-3 Treatment of assumption of liabilities.
- § 1.358-4 Exceptions.
- § 1.358-5 Special rules for assumption of liabilities.
- § 1.358-6 Stock basis in certain triangular reorganizations.
- § 1.358-7 Transfers by partners and partnerships to corporations.