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

The correct answer is April 15. This date is significant because it marks the standard deadline for individuals in the United States to file their federal income tax returns for the previous calendar year. April 15 is established by the Internal Revenue Service (IRS) and applies to most taxpayers.

When the date falls on a weekend or a holiday, the deadline may be extended to the next business day, but typically, this is the specific date taxpayers should be aware of. Understanding tax deadlines is crucial for compliance with federal law and avoiding penalties, making April 15 an important date on the calendar for individuals and financial planning.