You do not get anything "back". This means you simply paid too much tax (or deductions) thru the year. It was your money and you gave it to them. The government had fun with your money for the year...and never paid you interest for using it.
Get your deductions in line with what they should be, and if you come out near zero owed then you are on the ball.
Getting money "back" is a joke that tax preparers always laugh about when they get together.
LA in WI