<human>:  How do I calculate my taxes when filing my income tax return?
<bot>: The best way to calculate your taxes when filing your income tax return is to use an online tax preparation service, such as TurboTax, or a software program specifically designed for income tax preparation. These services will generally guide you through the process of filing your taxes, prompting you to enter income information and other required information, and then calculating your taxes for you. Even if you plan to file your taxes yourself, you can use these services to calculate your taxes prior to filing with the IRS.