A tax schedule is a form required by the Internal Revenue Service (IRS) to be prepared in addition to the tax return. It is a tool that reports and provides information about the additional calculations and other amounts stated in the tax return.[9] These generally include information on amounts such as mortgage interest, interest income or charitable contributions. Tax schedules are used by both taxpayers and taxation authorities such as IRS. The simple tax returns can be filed using the Form 1040 whereas the complex tax returns additionally requires a tax schedule to be completed with the tax returns. There are different types of schedules such as Schedule A, Schedule B, Schedule C, Schedule D , Schedule EIC and Schedule SE. Specific tax forms can be used by taxpayers or private entities that are required to report information on the tax liabilities, including income earners, businesses, and companies.