Schedule 1 (Form 1040) 2018 is used to report additional income and adjustments to income that can't be entered directly on Form 1040. It includes taxable refunds, credits, or offsets of state and local income taxes, alimony received, business income or loss, capital gain or loss, rental real estate, royalties, partnerships, S corporations, trusts, etc. and many more. The document type is a tax form and the type of assignment is a form filling task.