增值税加计抵减政策能否有效促进企业创新？
Can the Value-Added Tax Super Deduction Policy Effectively Promote Corporate Innovation?

本文运用双重差分模型检验了增值税加计抵减政策对于企业创新的影响，研究发现：(1) 增值税加计抵减政策显著提升了企业研发创新投入；(2) 政策效应具有明显的异质性。生产、生活性服务业中，大型企业和成长期企业对政策实施效果吸收较好，企业研发创新投入提升效果显著。本文的研究结果表明，增值税加计抵减政策作为一项税收优惠政策有效提高了企业的研发创新投入，提升企业的创新水平。为有效发挥增值税加计抵减政策对于企业创新的提升作用，建议延长增值税加计抵减政策的实施期限，降低增值税加计抵减政策的适用标准，以增加该政策的受惠面，促进企业的高质量发展。
This paper uses the difference-in-difference model to test the impact of the VAT super deduction policy on corporate innovation, and finds that: (1) The VAT super deduction policy significantly increases corporate R&D innovation investment; (2) The policy effect has obvious heterogeneity. In the production and life industries, large-scale enterprises and enterprises in the growth stage have better absorption of the policy implementation effect, and the increase in corporate R&D innovation investment is remarkable. The research results of this paper show that the VAT super deduction policy, as a tax preferential policy, effectively increases the company’s R&D innovation investment and the company’s innovation level. In order to effectively leverage the VAT super deduction policy to enhance corporate innovation, it is recommended to extend the implementation period of the VAT deduction policy and lower the applicability standards of the VAT super deduction policy to increase the coverage of the policy and promote the high-quality development of enterprises.