【摘要】 选取2015—2021年上证A股制造业上市公司为研究样本，基于DID双重差分和多元回归模型，探究2018年实施增值税留抵退税政策对12类400家制造业上市公司的业绩影响与影响机制。研究发现：增值税留抵退税政策通过降低公司财务费用与提高主营业务专注度，对公司业绩有积极正向支持作用。这为我国进一步推进增值税留抵退税政策的实施以及相关政策的制定提供了理论支撑，同时为现行复杂的经济形势下公司提升经营业绩提供决策依据。更多还原

【Abstract】 Shanghai A-share manufacturing listed companies from 2015 to 2021 are selected as research samples. Based on DID and multiple regression models, the study explores the performance influence and influence mechanism of the implementation of VAT credit refund policy in 2018 on the 400 manufacturing listed companies of 12 categories. It is found that the VAT credit refund policy has a positive supporting effect on corporate performance by reducing corporate financial costs and improving the focus of main business. This provides theoretical support for further promoting the implementation of VAT credit refund policy and the formulation of relevant policies,and provides decision-making basis for companies to improve their business performance under the current complex economic situation.更多还原