Taxpayers can find the IRS tax tables in Publication 17 - Additional Material, which is accessible in the Forms & Publications section of IRS.gov. The site includes different tables for individuals who are filing as single, married filing jointly, married filing separately and head of a household.
As of 2015, Publication 17 also includes tax computation worksheets for individuals with income above $100,000, according to the IRS. Additionally, the site provides tax rate schedules for each filing status, which individuals may not use to calculate their tax liabilities, but rather to help them understand the tax on different components of their income. It also aids in identifying their marginal tax rates. The Forms & Publications section of IRS.gov also includes other key tax documents, including Form 1040 for individual taxpayers and the instruction booklet for Form 1040.