Plus Deutsch is German for German, henceforth the explaination on why the Pennsylvania Dutch are called that when they are really German and not Dutch. The Dutch from the Netherlands also got their ethnic name derived from the German term Deutsch as well believe it or not. If you're Dutch, then you are from Denmark.
1 Deadline for filing a 2015 personal, partnership, or calendar year estates/trusts tax returns or extension.  The return or extension must be postmarked or transmitted for e-filing by Monday, April 18, 2016 (April 19 for Maine and Massachusetts residents).
Federal Tax Deadlines. If your return is postmarked by April 15th, the IRS considers it filed on time. April 15, 2015 â Federal tax return filing deadline. October 15, 2015 â Federal tax return extension deadline.Use PO Locator to find locations that will be open late to postmark your tax return. Write clearly. 2  Print labels on your computer or neatly write both the destination and return addresses. 3  Avoid the rush at the Post Office. 4  Mail your return in a Collection BoxÂ® that has a pick up time before the deadline.