Line 9 of the 1040 form is the Qualified Business Income deduction. This is a new deduction for 2018 from the Tax Cut and Jobs Act of 2017. The Qualified Business Income deduction is applied to business income from the following scenarios:
Congress
enacted section 199A (the Qualified Business Income Deduction) to provide a
deduction to non-corporate taxpayers of up to 20 percent of the taxpayer’s
qualified business income from each of the taxpayer’s qualified trades or
businesses, including those operated through a partnership, S corporation, or
sole proprietorship, as well as a deduction of up to 20 percent of aggregate
real estate investment trust (REIT) dividends and qualified publicly traded
partnership income.
Therefore, if you do not have any business income, then check if you had any 1099 MISC income reported in box 7 of the form, or if you had any 1099 DIV forms with an amount in box 5, as those types of income would be included in the Qualified Business Income deduction.
Here is more information on the Qualified Business Income deduction:
https://ttlc.intuit.com/replies/7019998
