Why am i getting this "You have Schedule 1, Additional Income and Adjustments to Income, and that's just one of the reasons the IRS requires you to file Form 1040."

[JulieCo]

Schedule 1 is a new form for 2018.  The IRS completely revised the 1040 form in 2018.  The 1040 form is much shorter and there is no longer a 1040A or 1040EZ form.  The line items that used to be reported on the 1040 form have now been moved to six additional schedules (Schedules 1 - 6). 

Schedule 1 is where additional income such as capital gains, unemployment, gambling winnings or self-employed business income is reported.   Plus, Schedule 1 also includes adjustments to income of educator expenses, HSA contribution deductions, self-employment taxes, self-employed retirement plans or health plans, alimony paid, student loan interest deduction and IRA deductions. 

Therefore, to add any of these additional items to your return, an upgrade to TurboTax Deluxe is required.

See a sample of Schedule 1 here:  Schedule 1