Our government has put great efforts in promoting e-tax filing so that citizens will not be restricted by time and space constraints, thereby enjoying a “More network, less walk,” barrier-free tax service environment. E-filing of taxes can correctly and quickly read report information and avoid human errors caused by the manual re-registration of the tax authorities, which greatly reduce the cost of data entry and shorten processing time. E-file is essentially an integration of an online service combined with filing taxes. Due to the strain in the operation of an online system along with the complexity of utilizing an online interface, in order to allow tax payers to overcome the difficulty in filing his/her individual income tax once a year, which affects his/her willingness to file tax online, this study uses an innovation resistance theory to explore the key factors contributing to the change in tax payment habits of taxpayers when filing their income tax.