2nd quarter estimated tax payments due for the 2014 tax year. (The normal deadline is June 15th, which falls on a Sunday, so the deadline is pushed to the next business day.)
Deadline for US citizens living abroad to file individual tax returns and to pay any tax due. You can request an additional 4-month extension (Form 4868). (You can request an automatic extension by April 15th instead if you want to.) Two tax breaks important for Americans working abroad are the Foreign Earned Income Exclusion and the Foreign Tax Credit, .