Taxpayers in Maine, Maryland, Massachusetts, New Hampshire, New York, Vermont and the District of Columbia will have until April 18, 2006 to file returns and pay any taxes due, according to formal guidance issued Monday as Notice 2006-23 by the Internal Revenue Service (IRS). The extension is being given because April 17 is Patriot’s Day, a state holiday, in Massachusetts and Maine. If the filing and payment deadlines fall on a Saturday, Sunday or legal holiday they are extended to the next business day, by law.