An Up-C structure is an efficient vehicle for operating partnerships seeking to access public capital markets while preserving favorable tax treatment for original owners. Unlike a traditional C corporation IPO, this structure allows pre-IPO investors—typically private equity or venture capital firms—to maintain their economic interests in a pass-through entity, shielding them from the double taxation inherent in a corporate framework.

Structuring an Up-C IPO

Fundamentally, structuring an UP-C IPO involves forming a public C corporation (PubCo) that serves as the parent holding entity – while the original operating business remains structured as a partnership or limited liability company (Flow-through Entity). Pre-IPO owners exchange their partnership units for a new class of exchangeable interests, which retain direct ownership in the Flow-through Entity but allow for conversion into PubCo shares over time. This arrangement enables the Flow-through Entity to conduct an IPO while maintaining its tax-efficient status.

PubCo holds only a controlling interest in the Flow-through Entity, with public shareholders owning Class A common stock and original partners retaining Class B shares that confer voting rights but no economic benefits. These Class B shares align voting power with economic interest as ownership shifts over time. PubCo typically uses IPO proceeds to acquire Flow-through Entity units from original owners, effectively monetizing their stakes while preserving tax treatment and governance flexibility.

Tax and Economic Advantages

A central benefit of this structure lies in its tax efficiency. The Flow-through Entity remains a pass-through for tax purposes, ensuring that original owners continue to avoid entity-level taxation. As original partners exchange their Flow-through Entity units for PubCo shares, the corporation benefits from a step-up in tax basis, reducing future tax obligations on appreciated assets. This basis step-up, frequently monetized through a tax receivable agreement (TRA), allows the original partners to capture a negotiated portion of PubCo’s tax savings, often set at 85 percent.

TRA provisions enhance the appeal of the Up-C structure by ensuring that economic value derived from these tax attributes does not accrue solely to new public investors. PubCo benefits from amortizing goodwill and other intangibles over a 15-year period, further improving its post-IPO cash flow. Additional basis step-ups occur with each subsequent exchange of Flow-through Entity units, increasing the long-term benefits of the TRA arrangement. In certain liquidity events, such as mergers or buyouts, TRAs may include lump sum payout provisions, accelerating the realization of tax benefits for original investors.

Structural Considerations and Market Implications

Maintaining an Up-C framework post-IPO requires executing several key agreements, including an exchange agreement governing liquidity events for original owners and a registration rights agreement facilitating the resale of converted shares. Since public shareholders hold economic interest solely in PubCo, the structure enhances transparency while ensuring that governance remains aligned with the long-term interests of founding investors.

Market dynamics are crucial in determining whether an Up-C approach remains advantageous over time. While it offers substantial tax benefits and liquidity flexibility, ongoing compliance with TRA payments and regulatory filings adds administrative complexity. Investors evaluating an Up-C transaction must weigh the incremental costs against the structure’s tax efficiencies and strategic control advantages.

Long-Term Strategic Implications

The Up-C structure provides a sophisticated pathway for private equity and venture-backed entities to transition into public markets without relinquishing key economic and tax advantages. This approach offers a compelling blend of liquidity and operational continuity by preserving a partnership’s flow-through status while securing access to capital. Its success hinges on careful structuring, alignment of incentives, and ongoing management of tax and regulatory considerations, making it an essential tool for firms balancing IPO aspirations with long-term financial optimization.

Appraisal Economics provides valuations for Up-C entities for a variety of purposes, accurately capturing the nuances of the unique ownership structure.