To file American tax for us residents living abroad, you will need a social security number (SSN) or individual taxpayer identification number (ITIN). Without it, you cannot file your tax return. To get a social security number, you need to use form SS-5, Application for a Social Security Card.
The tax year, which is also known as the ‘fiscal year’, runs from Jan 1 - December 31. Taxpayers are expected to file their taxes for the calendar year, by the following April 15. The deadline for filing taxes for 2018 would be by April 15, 2019.
It is hard to pinpoint an amount that American celebs have to pay under American Tax for US Residents Living Abroad.