Abstract
Using a Nash bargaining approach, we analyze the financing contract between the entrepreneur and the venture capitalist with double-sided moral hazard in a start-up enterprise. Our results show that there exists an optimal contract set between the entrepreneur and the venture capitalist, in which all contracts achieve an identical second-best social state. Within the optimal contract set, there exists continuum of joint debt-equity financing. The pure equity financing contract exists in the optimal contract set when the ratio of total social surplus to the amount of investment is greater than a threshold.
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Notes
Throughout the paper, we use the phrases “optimal effort” and “equilibrium effort” interchangeably.
With complete information when efforts are observable and verifiable, the entrepreneur and the VC would be compensated by their respective actual effort. In this case, their optimal effort levels are determined by the following condition:
\( \underset{L,K}{\max}\kern0.5em \gamma S\left(L,K\right)=\gamma \left({R}_{\varepsilon }+c\sqrt{LK}-F-\frac{L^2}{2\eta }-\frac{K^2}{2\theta}\right), \)
where γ = αα(1 − α)(1 − α) is a constant and S(L, K) is the gross social surplus that deducts from the project output the initial investment and effort costs of both parties. To find the optimal effort levels, we take the first-order condition, which gives \( \Big\{{\displaystyle \begin{array}{l}{L}^{\ast }=\frac{c}{2}{\theta}^{\frac{1}{4}}{\eta}^{\frac{3}{4}}\\ {}{K}^{\ast }=\frac{c}{2}{\theta}^{\frac{3}{4}}{\eta}^{\frac{1}{4}}\end{array}}\operatorname{} \).
Throughout the paper we use the terms “agreed effort” and “expected effort” interchangeably.
Lemma 1 describes the ideal yet inexecutable entrepreneurial contract form, and Proposition 1 presents the executable contract set (which nests the ideal contract) by introducing conditional social surplus. Only if conditional and actual social surplus are equal, the project output is shared in the same fashion between the ideal contract and the executable contract. The contract is fair in the sense that both parties are compensated by the actual cost of effort. The fairness of contracts in this context is more specific than that discussed in literature such as Fairchild (2011b) who relates it more generally to reciprocity, empathy, and trust.
In Figure 4 the following assumptions are made regarding the transfer payment: \( T\left(\widehat{L},\widehat{K}\right)=1.5\times \alpha F=0.15 \) in \( M\left({H}_1^{\ast}\right) \), \( T\left(\widehat{L},\widehat{K}\right)=\alpha F=0.1 \) in \( M\left({H}_2^{\ast}\right) \), \( T\left(\widehat{L},\widehat{K}\right)=0.5\times \alpha F=0.05 \) in \( M\left({H}_3^{\ast}\right) \), and\( T\left(\widehat{L},\widehat{K}\right)=0\times \alpha F=0 \) in \( M\left({H}_4^{\ast}\right) \).
The subset \( M\left({H}_4^{\ast}\right) \) excludes the scenarios when α is between 0.83 and 0.99 because of the negative social surplus (the transfer payment is out of its boundary). Such scenarios are not in the optimal contract set by definition.
The subset \( M\left({H}_3^{\ast}\right) \) excludes the scenarios when α is between 0.91 and 0.99 because of the negative social surplus.
Generally, in subsets M(H1*) and M(H3*), the relationships shown in Fig. 4 are not necessarily linear, and the share of social surplus received by the entrepreneur is usually (but not always) greater than the share of project output.
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Acknowledgements
Hui Fu thanks his supervisor, Professor Tian Cunzhi, for his guidance, support, and continuing encouragement throughout his Ph.D. studies at Jinan University.
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Appendix
Appendix
1.1 Proof of Proposition 2
According to the basic form for the financing contract in Proposition 1, the expected effort levels in contract are \( \left(\widehat{L},\widehat{K}\right) \) for the entrepreneur and the VC. At arbitrary effort levels L and K, the entrepreneur receives:
and the entrepreneur’s cost for effort is:
Thus, the social surplus received by the entrepreneur is:
Similarly, the social surplus received by the VC is:
\( {R}_{\mathrm{vc}}-F-{g}_{\mathrm{vc}}(K)=\left(1-\alpha \right)S\left[\left(L,K\right)|\left(\hat{L},\hat{K}\right)\right]+\frac{{\hat{K}}^2}{2\theta }-\frac{K^2}{2\theta}\cdotp \) Since both the entrepreneur and the VC are rational, they would choose the optimal effort levels \( \tilde{L} \) and \( \tilde{K} \) to maximize their respective social surplus:
According to the first-order conditions, the equilibrium solution is:
1.2 Proof of Proposition 3
As per the basic form of the financing contract as in Proposition 1 and the assumption of \( S\left(\tilde{L},\tilde{K}\right)>0 \), the transfer payment \( T\left(\hat{L},\hat{K}\right) \) must make both the entrepreneur and the VC receive a positive social surplus. According to Corollary 2, we have the following:
which gives:
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Fu, H., Yang, J. & An, Y. Contracts for venture capital financing with double-sided moral hazard. Small Bus Econ 53, 129–144 (2019). https://doi.org/10.1007/s11187-018-0028-2
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DOI: https://doi.org/10.1007/s11187-018-0028-2