Tax Day is coming. You haven’t filed yet. In truth, you haven’t even started. Preparing a tax return can trigger paroxysms of stress at the best of times. If you’re rushing to finish your taxes ahead of the April 15 deadline, you may be rushing things. Between stress and haste, you could wind up making costly errors. Here, then, is a list of common mistakes people make before filing their taxes, adapted from a March 25 list published by the Illinois CPA Society. To honor the Land of Lincoln, we’ll inclu ...