My 2018 1040 has my Adjusted Gross Income just slightly less than my wages from my W-2. Is that correct?

[Carl]

Sure. That's why it's called "adjusted" gross income.

[mesquitebean]

We won't know if it's correct or not.  It will depend on what adjustments there were for the "adjusted" part and whether or not you had any other income other than W-2.   Here's how to preview your Form 1040 and Schedules 1-6.    The Schedule 1 should give you a clue as to what your adjustments are.

• With your return open, click in the left menu column on TAX TOOLS, then TOOLS.
• Then at the Tools screen click on "View Tax Summary."
• At the Tax Summary screen go back to the left menu column and click "Preview My 1040."
• That will open the Form 1040 Worksheet and Schedules 1-6.

See if you have any adjustments on Schedule 1.  Here's what a blank Schedule 1 looks like:

https://www.irs.gov/pub/irs-pdf/f1040s1.pdf

The Schedule 1 shown in TurboTax will look somewhat different since it is actually a worksheet.  But you should still be able to tell.