Since we no longer own anything in the U.S. and we are now both permanent residents of the Philippines, our taxes have been simple to file every year.
I have multiple U.S. Government pensions, which are all earned entitlements, no freebies from the U.S. Government and I too am also still a U.S. tax payer even though retired and over 65 yrs of age and living in the Philippines permanently.
Today, I just got all of my three 1099s and a new IRS Form 1095B on-line and I can now start to prepare and e-file our 2015 income tax returns anytime before the April 15 deadline.
BTW, ever since 2006 I've been using the free on-line Turbo Tax software (nothing to download, except for copies of our completed tax forms) and have had no issues with my e-filing and whatever we owe to State and or Federal is automatically deducted from our U.S. bank account automatically before the April 15 deadline. We have no need for filing for an extension, since our taxes are simple as they can get, no itemized deductions and or any declaration for any other benefits via the IRS Form 1040A.