<prompt> Human: I was about to sit down and start this process. I dont have any deductions. I input my W-2 information and see where I land and go from there. This question popped up in my brain: The government knows exactly how much to take out of my paycheck but cant be counted on to return any amount theyve taken in excess?This doesnt make much allowance for the people with deductions, etc., but Im simply talking about the return. You can submit your deductions, etc., separately soon after you get your automatic refundbill from the IRS based on what you put in throughout the year. Or am I completely off here?  <response>: The government knows exactly how much to take out of my paycheckThe government sets formulas that are a best guess of how much you will owe at the end of the year based on your salary alone.cant be counted on to return any amount theyve taken in excess?Nope. How would they know if you itemize your deductions versus taking the standard deduction? How would they know if you paid student loan interest? Etcetera. 