Schedule SE is a form used by self-employed individuals to calculate their self-employment tax. This tax consists of Social Security and Medicare taxes, which are typically withheld from wages by employers. Self-employed individuals must report their earnings and pay these taxes directly to the IRS. To complete Schedule SE, taxpayers need to provide information about their net earnings from self-employment. The form helps determine the amount owed, which is then reported on the Form 1040. Filing this schedule ensures that self-employed individuals contribute to their future Social Security benefits and Medicare coverage.