country is USA

both for s Problem 63: Please provide the Statute of Limitations DATE for the following tax returns! 1) Tax Return for 2016 Filed 4/15/2017: 2) Tax Return for 2015 Filed 12/15/2017: Tax Return for 2013 Filed 6/30/2015-> Audited by IRS& Fraud Proposed: 3) & What is Unique about this Statute? 4) Tax Returns for 2010; 2011; 2012; 2013; 2014; 2015; and 2016- All NOT Filed: What is the last date to obtain a REFUND for the 2015 tax return due on 4/15/2016? If 5) the return is not filed yet