Quantitatively assessing the incentive effect of tax incentives is of practical significance for playing the regulatory role of tax policy and promoting the development of enterprises. Taking the implementation of accelerated depreciation policy of fixed assets as a quasi-natural experiment, selecting the data of A-share listed companies in Shanghai and Shenzhen from 2010 to 2022 as samples, a multi-period double difference model was constructed to empirically test the incentive effect of tax preferential policies on enterprise growth. It is found that the policy of accelerated depreciation of fixed assets can significantly promote the growth of enterprises, and the incentive effect of this policy is heterogeneous, subject to the nature of the enterprise's equity, the nature of the industry and the size of the constraints, the growth incentive effect on non-state-owned enterprises, high-tech industry enterprises and large-scale enterprises is better. On the basis of empirical research, suggestions are proposed to further improve the tax preference policy and promote the growth of enterprises.

tax incentives  /  accelerated depreciation policy for fixed assets  /  enterprise growth  /  multi-period double-differentials(DID)