Done properly, you should neither owe nor get money back from the Gov't.
If you owe, you haven't had enough deducted from your paycheck to cover taxes and/or you haven't donated enough to charity and/or you haven't contributed enough to an IRA/401K.
If you get a lot of money back, you're deducting too much in taxes. In other words, you've given the Fed. Gov't an interest free loan over the year.