Private Law Theory

ABSTRACT
Limited liability is foundational to modern corporate finance because it permits diversified equity ownership, market liquidity, and impersonal capital formation. Yet finance models treat the shareholder liability cap as an exogenous legal boundary, not as a separately priced protection. This paper studies the pricing failure created by that convention. When corporate harm exceeds firm-side assets, insurance, indemnities, statutory funds, and bankruptcy-estate resources, the residual loss is not eliminated; it is shifted to involuntary creditors, tort claimants, workers, taxpayers, ecosystems, non-human sentient life, and future generations. Prior proposals, including unlimited shareholder liability, bonding, public charges, asset requirements, and mandatory firm-level insurance, address parts of the judgment-proofness problem but do not jointly provide holder-level incidence, transfer reset, dynamic underwriting, risk-based capital, run-off, reserve-backed compensation, secondary-market signalling, and no-insurance boundaries. The question is whether the capital-market benefits of limited liability can be preserved while eliminating the zero-price subsidy embedded in investor insulation from residual social loss. The paper argues that costless limited liability is economically analogous to a zero-premium legal put, or free excess-loss protection, written on residual harm. It proposes removing that subsidy by converting the shareholder liability shield into a renewable, holder-linked Limited Liability Certificate purchased from regulated underwriters at market-discovered premia. The mechanism, termed Equitable Liability, prices the residual layer (H − A)^+, where H is legally cognisable harm and A is firm-side loss-absorbing capacity.A benchmark model shows that actuarially fair certificate premia capitalise omitted residual harm into ownership. An equilibrium underwriting model derives premia from conditional expected residual loss, signal precision, risk-based capital, expected shortfall, adverse selection, moral-hazard covenants, and administrative loadings. The extended architecture formalises certified-equity valuation, portfolio-certificate choice, liability-premium beta, extraordinary repricing, certificate-market signals, securitised risk transfer, reinsurance, retrocession, claims-waterfall non-impairment, legacy-risk premia, no-cover discontinuities, and equity-premium death spirals. Equitable Liability reframes limited liability as a priced, renewable, claims-backed, and market-observable excess-loss protection rather than a free attribute of the share. It preserves tradable equity while making residual harm endogenous to valuation, expected returns, insurer capital allocation, and corporate risk management. More generally, the paper identifies the legal underpricing of shareholder insulation as a central distortion in capital allocation and proposes a market-consistent architecture for repricing that insulation through underwriting, solvency regulation, and claims-paying capacity. By making the shield conditional, renewable, and capital-backed, Equitable Liability supplies a mechanism for aligning capital allocation with ecosystems, animals, and future generations.

Valaquenta, Arman, Of Equitable Liability (April 16, 2026).