More often than not, you'll see your refund go down after
entering a second W-2 (or subsequent W-2’s). This is very common and nothing
to be concerned about.
When you first start your return in TurboTax, we've
already applied your standard deduction and personal exemption, which means
many people will see an artificially high refund after entering that first W-2.
The
more information you enter, the more accurate the refund meter will be, and
will be totally accurate once you have entered all of your personal information
including all income and deductions
Also see
Why Did My Refund Drop When I Entered a Second W-2?
