Tax software is an especially interactive way to dispense tax advice. Several years ago, the IRS enlisted a few tax-software companies, including TurboTax and CompleteTax, to offer free filing of federal returns for people with adjusted gross income below a certain amount. This year, the cutoff is $58,000, which would allow about 70 percent of all taxpayers to file for free. Taxpayers in that category can choose to file using one of 17 companies listed on the IRS鈥檚 website. In most cases, however, taxpayers cannot use the software to file state tax returns for free.

Photo illustration/Ingram Publishing/Newscom
If your adjusted gross income is below $58,000, you can opt to file for free with tax software from a long list of companies. But two-thirds of Americans who file electronically prefer to rely on a professional for tax advice and preparation rather than on a computer and do-it-yourself software.