<human>:  How do I file for a tax extension?
<bot>: To file for a tax extension you will need to submit Form 4868 to the Internal Revenue Service (IRS). This form is available online or can be requested by calling the IRS at (800) 829-1040. Once completed, it must either be mailed or e-filed with the IRS. Additionally, you may need to make an estimated payment of taxes due to avoid a penalty.