Tax Day, observed on April 15 in the United States, marks the deadline for individuals to file their federal income tax returns with the Internal Revenue Service (IRS). This day often brings stress for many Americans as they sift through receipts and paperwork to complete their tax filings. While the Form 1040 has become shorter over time, the process of filing taxes remains complex for most people. Tax Day is not typically associated with joy, especially for those who are not expecting a refund or do not work in accounting. For those who need more time, filing an extension is an option to alleviate some of the pressure. The IRS was established in 1862, when the federal government began to assess and collect taxes.