consumer correspondent elisabeth leamy joins us this morning. >> reporter: our tax system is so complicated confusing, that even financially sophisticated people can blow it. consider the case of a "washington post" financial reporter, who thought she owed thousands after doing her own taxes. elan's new year's resolution was to do her own taxes. >> as i search for each of the papers, i strewed them across the table. my cad hops up and starts using them as scratching posts. >> reporter: she thought she would be getting a refund. >> i was going to spend it on new blinds for my home, which my cats have also shredded. >> reporter: then, came the shocker. the. >> the machine was telling me, i owed uncle sam $5,000. if that's the case, i want to hear it from a person. >> reporter: so, elan met with an accountant, who figured she had entered her mortgage incorrectly because of a complicated refinance. >> as soon as she did that, i was getting a refund. >> reporter: ylan, business recorder, high school math club member, was so spooked by her close call, that she wrote about it in "the washington po