Intuit TurboTax Individual for Windows is tax preparation software designed for individual taxpayers in the United States. It guides users through the process of filing their federal and state income tax returns. Different versions exist offering varying levels of support and features, ranging from basic to more comprehensive options for those with complex tax situations (like self-employment income, rental properties, etc.). The software handles calculations, ensures accuracy, and helps users avoid common filing mistakes. It then allows users to electronically file (e-file) their taxes directly to the IRS and relevant state tax agencies.