Excerpt: "The tax bill from a Roth conversion can be voided by recharacterizing the conversion. However, the recharacterization must meet certain specific requirements to be considered valid. These are: The conversion must be completed by the individual's tax filing deadline, including any extension. Individuals who file their tax return or file for an extension by the due date receive an automatic six-month extension for completing the recharacterization. For individuals who file on a calendar year, this six-month extension ends October 15. This means that individuals who completed Roth conversions last year have until October 15 of this year to recharacterize that conversion. The recharacterization must be accompanied by any net income attributable (NIA) to the conversion. The end result is that the recharacterization amount is treated as if it was never converted for tax purposes, and therefore not included in the individual's income."