It is very crucial to grasp when the tax deadline is because failing to meet it may cause the issuance of penalty charges and interest on the unpaid amounts. The deadline for the federal income tax return is normally April 15 of each year. This date marks the last day for taxpayers to submit their tax returns and settle the tax amount with the Internal Revenue Service. When April 15 is a weekend or a public holiday, people are allowed to file their taxes on the next working day.