When is the last day you can send in federal tax forms electronically?

The last day to electronically file federal tax forms for most individuals is typically April 15th. However, if that date falls on a weekend or holiday, the deadline may be extended to the next business day. Additionally, taxpayers can request an extension, which generally gives them until October 15th to file, but they must still pay any owed taxes by the original deadline. Always check the IRS website for the most current deadlines and any changes.