Tax Enforcement and Corporate Innovation: Evidence from the Tax Administration Information System Reform

We obtained data from the China Stock Market and Accounting Research and Wind databases. We compiled the data on the CTAIS-3 implementation project in each province manually from the official SAT website and news reports. Given that China implemented new accounting standards in 2007, we selected A-share private companies listed in both the Shanghai and Shenzhen stock exchanges from 2007 to 2022 as the initial sample. The sample excludes firms in the finance and insurance industry because their business content and accounting methods differ significantly from those of other industries. We filtered the sample by removing unusual companies, such as special treatment firms, and then deleted the observations with missing values. Finally, we winsorized the continuous variables at the 1st and 99th percentiles to eliminate potential outlier effects. The final sample includes 14,655 firm-year observations.

本研究数据源自中国股票市场与会计研究（China Stock Market and Accounting Research）数据库与万得（Wind）数据库。本研究通过国家税务总局（State Administration of Taxation, SAT）官方网站及新闻报道，手动整理了各省份的税收征管信息系统3.0（CTAIS-3）上线项目相关数据。鉴于我国于2007年实施新会计准则，本研究以2007至2022年间在上海证券交易所与深圳证券交易所上市的A股民营公司作为初始样本。由于金融与保险行业的业务内容与会计核算方法与其他行业存在显著差异，本研究剔除了该行业的上市公司。本研究进一步对初始样本进行筛选：剔除异常公司（如被实施特别处理的上市公司），并删除存在缺失值的观测样本。最后，本研究对连续变量在1%与99%分位处进行缩尾处理，以消除潜在的异常值影响。最终有效样本共包含14655个公司年度观测值。