In response to recent action by the IRS, Virginia is providing relief from the estimated tax underpayment penalty for farmers, fishermen, and merchant seamen who are unable to file and pay their 2012 taxes by the March 1 deadline. In order to receive an automatic waiver of the estimated tax underpayment penalty, farmers, fishermen and merchant seamen must file their returns and pay the entire tax due by April 15, 2013.