Look at it this way, you got to keep and use that money during the year. I've never understood the idea of wanting a big "refund". Isn't that just the government paying the no interest loan they took from you throughout the year? If you waited a whole year to repay money you owed the goverment, would they simply thank you for the exact amount you kept? Not hardly!!! ;~D
I know $2300 is a lot of money to have to pay, personally, I shoot for a bottom line of $0.00 on my tax forms. I didn't give them a no interest loan, and the government isn't getting anymore! ;~D