<human>:  How do I calculate a 1040 tax form?
<bot>: To calculate your 1040 tax form, you should first gather all of your relevant financial information such as wages, investments, and other income. Next, you should go online to the Internal Revenue Service (IRS) website and download a copy of the 1040 form. You can also find it in print from most post offices. After you have the form, you should carefully read the instructions and complete the form with all of your relevant financial information. Once your taxes are calculated, you should submit the completed form to the IRS.