ContentCatching up on taxesWhy and how to file back taxesWhat happens after I file back tax returns?What Are Back Taxes? You can apply for a short-term payment plan online, over the phone, through the mail or in person at no charge. The IRS may contact you about two-and-a-half years after you file, asking you to sign a form to extend the statute of limitations. It can be tempting to relish your power...