This article is part of a four-part webinar series on roll-up strategy, and is one of three articles examining tax planning considerations for private equity sponsors in rollover equity transactions. For additional articles and resources, see the drop-down below.

Roll-Up M&A Article Series

• How to Streamline Roll-Up Diligence
• Post-Close Cleanup to Support a Stronger Exit
• Key Tax Structuring Issues in Rollovers
  
  • Rollover Equity in Partnership Acquisitions: Tax Planning Considerations for PE Sponsors
  • Rollover Equity in S Corporation Acquisitions: Tax Planning Considerations for PE Sponsors
  • Rollover Equity in C Corporation Acquisitions: Tax Planning Considerations for PE Sponsors (current article)

• Coming Soon: Contract Considerations in Roll-Up Transactions

Acquiring a C corporation presents a fundamentally different tax dynamic than acquiring a pass-through entity. While rollover equity remains a vital tool for capital preservation and seller alignment—keeping sellers financially invested in the company’s future success—sponsors face a core structural trade-off: seller tax deferral and buyer asset basis step-up (the ability to revalue acquired assets higher for tax purposes, unlocking greater depreciation deductions) rarely travel together.

Deal structuring trade-offs in C corporation acquisitions

In a C corporation transaction, obtaining an inside asset basis step-up (a step-up at the company/asset level, as opposed to just the shareholders’ stock basis) requires triggering an actual or deemed asset sale. This subjects the deal to double taxation—corporate-level tax on the asset gain, followed by shareholder-level tax on the distribution—frequently making inside basis creation economically unviable. Consequently, sponsors must evaluate rollover tax deferral, basis step-up, and overall deal economics as interconnected trade-offs.

This article is part of a three-part series examining tax planning considerations for private equity sponsors in rollover equity transactions. For additional insights, explore our related articles addressing rollover equity in S corporation acquisitions and partnership acquisitions.

The Three Questions That Drive C Corporation Structuring

Before finalizing transaction terms, sponsors should evaluate three core questions at the outset:

• Can sellers achieve nonrecognition treatment on their rollover equity?
• Can the buyer obtain depreciable or amortizable asset basis step-up?
• Does the net present value (NPV) of future tax deductions exceed the immediate seller tax cost required to create them?

Structuring Corporate Rollovers: Section 351 vs. Partnership Holdcos

To achieve tax-deferred rollover treatment, sponsors generally utilize one of two legal frameworks:

1. Section 351 Corporate Rollover

Sellers and sponsors contribute target stock and capital to a new corporate Holdco in exchange for Holdco stock.

Crucial Pitfall — The 80% Control Rule: Under IRC §351, transferors contributing property (stock or cash) must own at least 80% of the voting power and total stock immediately after the exchange. While property transferors who also perform services may count toward the 80% threshold (provided their property contribution is not nominal), stock issued solely for services is excluded. If service equity causes the property transferors to fall below the required 80% control threshold, the rollover may fail to qualify for nonrecognition treatment under IRC §351.

2. Partnership Holdco over C Corporation Opco (Hybrid Structure)

Sponsors form a Partnership Holdco that acquires 100% of the C corporation stock. Rolling sellers contribute target stock to the Partnership Holdco under IRC §721.

• The Advantage: Preserves partnership governance, equity waterfall flexibility, and tax-deferred rollover treatment for sellers.
• The Trade-Off: The Partnership Holdco holds stock in a taxable C corporation. As a result, no inside asset basis step-up is created within the operating company absent a taxable transaction that triggers corporate-level tax.

Sponsor Takeaway: Operating a Partnership Holdco above a C-Corp Opco requires evaluating transfer pricing, management-fee allocations, and intercompany service agreements to avoid tax exposure under IRC §482. If the two-tier structure is funded 100% with equity and the C-Corp Opco simply holds cash and operating assets without paying Partnership HoldCo expenses, intercompany mechanics are minimized.

The Economic Reality of Section 338 Elections and Asset Purchases

Sponsors frequently ask whether structuring as an asset purchase or electing under IRC §338 is desirable. An IRC §338 election treats a stock purchase as a deemed asset sale—taxed as if the company actually sold its assets, even though only stock changed hands—generating amortizable goodwill and stepped-up asset basis for the buyer. However, because the target is a C corporation, the election triggers immediate, taxable corporate-level gain recognition.

The Mathematical Reality of Basis Creation: Why Asset Step-Ups Rarely Work for C Corporations

When acquiring a stand-alone C corporation Target, a joint §338(h)(10) election is legally unavailable (as IRC §338(h)(10) is restricted to corporate target subsidiaries of an affiliated/consolidated group or S corporations). Consequently, achieving a tax basis step-up via a stock acquisition requires a §338(g) election, which triggers severe double taxation:

• Immediate Double Taxation:
  1. Target Level: The target pays corporate tax (~21% federal + state) TODAY on the full deemed asset gain.
  2. Shareholder Level: Selling shareholders pay full capital gains tax on their stock sale proceeds.
• The Deferred Benefit: Amortization/depreciation deductions are realized OVER 15 YEARS (under IRC §197) and discounted to present value.

The Bottom Line: Unless the target is a subsidiary of a corporate group eligible for an IRC §338(h)(10) election, possesses substantial Net Operating Losses (NOLs) to absorb the IRC §338(g) gain, or qualifies for specific IRC §1202 QSBS gain exclusion mechanics (covered later in this article), the net present value of future 15-year tax depreciation savings almost never overcomes the cost of immediate double taxation.

Dealmaker Strategy: Default to a pure Stock Purchase (with carryover basis) for stand-alone C corporation targets to avoid double taxation and preserve cash at closing.

In middle-market transactions, the present value of 15-year goodwill amortization is usually substantially lower than the upfront cash tax required to trigger corporate asset sale treatment. Consequently, sponsors usually acquire C corporation targets via stock purchases without a basis step-up.

Qualified Small Business Stock (Section 1202 QSBS) Considerations

For lower-middle-market C corporation targets, management teams and early investors may hold Qualified Small Business Stock (QSBS) under IRC §1202. Following recent tax statutory updates, IRC §1202 provides an expanded gain exclusion cap of $15 million per taxpayer, per issuer, or 10 times basis, whichever is greater, for stock acquired after July 4, 2025, along with an increased corporate gross asset ceiling of $75 million.

Critical Structuring Pitfall for PE Sponsors

While partnerships can hold QSBS if acquired directly at original issuance, contributing pre-existing IRC §1202 QSBS into a Partnership Holdco under IRC §721 disqualifies the stock from future QSBS gain exclusion under IRC §1202(g) and Treasury Regulation §1.1202-2. Where target shares qualify as QSBS, deal teams should evaluate an IRC §368 corporate reorganization or direct IRC §351 corporate rollover rather than a Partnership Holdco if preserving potential IRC §1202 benefits is a material transaction objective.

Key Takeaways for Sponsors

• Separate Basis Creation from Tax Deferral: Recognize that an asset basis step-up is often economically unviable in a stand-alone C corporation acquisition. Focus the deal team's efforts on optimizing tax-deferred rollover mechanics.
• Review the Section 351 Control Group Early: Management equity incentives should be modeled carefully to avoid inadvertently breaking the 80% control threshold required for IRC §351 nonrecognition treatment.
• Vet QSBS Eligibility Prior to Term Sheet Signing: Identify whether target stock qualifies under IRC §1202 before choosing a Partnership Holdco vs. Corporate Holdco structure.
• Document Hybrid Intercompany Agreements: For two-tier Partnership Holdco / C-Corp Opco structures, execute written intercompany management agreements and service arrangements to defend against §482 transfer pricing scrutiny and constructive dividend characterization.

Every transaction presents unique tax considerations and planning opportunities. For guidance on rollover equity structures, private equity acquisitions, or other transaction-related tax matters, contact Koley Jessen's Tax Practice Group.

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