A tax form is a document used by individuals and businesses to report their income, expenses, and other financial information to the government. These forms help determine how much tax is owed or if a refund is due. Common types of tax forms include the 1040 for individual income tax and the W-2 for reporting wages. Filing tax forms is an essential part of the annual tax process, typically due by April 15 in the United States. Accurate completion of these forms is crucial, as errors can lead to penalties or delays in processing. Many people use tax preparation software or hire professionals to assist with this task.