Since structural tax cuts were first incorporated into active fiscal policy in 2008, various tax breaks have been introduced. Based on the detailed enumeration of tax reduction policy measures, this study constructs an evaluation index system for the level of digital development of enterprises in terms of strategy implementation, operation status, technology level, and quality management. Then DEMATEL hierarchical analysis method and big data analysis method are used to analyse and determine the comprehensive influence degree of each index. Finally, this paper analyses the benefits and convenience brought by tax reduction and fee reduction to the digital development of enterprises and puts forward countermeasures and suggestions for the development of digital transformation of enterprises in the context of tax reduction and fee reduction. This study aims to put forward relevant countermeasures for enterprises to enhance their digital transformation and development capabilities.