Will you get a return if you owe the IRS?

You will file a return. You will not get a refund (which is a refund of your overpayment) if you owe more than you have paid in through withholding and such - which is waht your payment is for - to make up for what you should have pre-paid. Depending on the amount of the underpayment and other factors, it is possible you will also owe a penalty and interest on that underpayment.