The tax rules have changed significantly for 2018.  You no longer get a dependents deduction for yourself, your spouse or your children or other dependents. You do get a larger standard deduction though which may offset the loss of the dependents deduction.  The new standard deductions (which is in addition to any foreign earned income exclusion you claim on form 2555) is below. Due to these higher amounts the advantages of owning a home and the deduction of mortgage interest and state property taxes may be lost and well as loss of ability to deduct medical expenses and charitable expenses.  All of these deductions must exceed the standard deduction to achieve any benefit from these deductions.

2018 Standard Deduction Amount

Filing Status:	Deduction Amount:
Single	$12,000
Married Filing Separately	$12,000
Married Filing Jointly	$24,000
Head of Household	$18,000
Personal Exemption	$0