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

The last day to send in federal income tax forms is April 15. This date has been traditionally recognized as the deadline for individuals to file their federal income tax returns. If April 15 falls on a weekend or a legal holiday, the deadline may be extended to the next business day, which helps taxpayers avoid issues caused by calendar quirks. Knowing this deadline is crucial for citizens to ensure compliance with tax regulations and avoid late penalties. The other dates listed do not align with the established deadline, making April 15 the accurate choice for tax filing.