Maine 4.26.7203 Failure to File a Tax Return, 26 U.S.C. Sec. 7203, is a criminal offense under the United States federal law. The offense is defined as the willful failure to file a tax return required by law within the required time frame. This offense is punishable by a fine or imprisonment for up to one year. There are two types of Maine 4.26.7203 Failure to File a Tax Return, 26 U.S.C. Sec. 7203: 1. Willful Failure to File: This offense occurs when a taxpayer willfully fails to file a tax return or other required document within the required time frame. This offense is punishable by a fine or imprisonment for up to one year. 2. Negligent Failure to File: This offense occurs when a taxpayer negligently fails to file a tax return or other required document within the required time frame. This offense is punishable by a fine or imprisonment for up to six months.