1040 Tax Calculator Overview

Tax season is upon us, and most of us are scrambling to get our tax paperwork and receipts together for the tax man. It's always exciting when you know that a refund check will be arriving in the mail or will be electronically deposited into your bank account at any given moment. So wouldn't it be nice to know approximately how much your tax obligation is going to be or how much of a refund check you can start planning on spending?