2020 Federal Income Tax Brackets and Rates. In 2020, the income limits for all tax brackets and all filers will be adjusted for inflation and will be as follows (Table 1). The top marginal income tax rate of 37 percent will hit taxpayers with taxable income of $518,400 and higher for single filers and $622,050 and higher for married couples The Texas income tax has one tax bracket, with a maximum marginal income tax of 0.00% as of 2020. Detailed Texas state income tax rates and brackets are available on this page. The Texas Comptroller's office serves the state by collecting more than 60 separate taxes, fees and assessments, including local sales taxes collected on behalf of more than 1,400 cities, counties and other local governments around the state.. News and Announcements