Why FEIE Carries Almost Your Entire Strategy
In countries with an income tax treaty and meaningful local tax rates, the Foreign Tax Credit often does the heavy lifting. In Saudi Arabia there's no local income tax to credit and no treaty to fall back on. That leaves the Foreign Earned Income Exclusion (FEIE) as the single most important tool for eliminating US tax on your Saudi salary.
The Two Qualifying Tests
Physical Presence Test: You must be physically outside the United States for 330 full days within any 12-month period. It's a pure day-count test; it doesn't matter which country you're in, only that you're not in the US. A single extended trip home for a family emergency can wreck an otherwise clean year.
Bona Fide Residence Test: You must establish genuine residency in Saudi Arabia for an entire, uninterrupted tax year. The IRS looks at a long-term lease, local ties, and whether you're a genuine resident rather than a transient contractor. This test is harder to satisfy for rotational oil and gas workers whose schedules involve regular blocks of time outside the Kingdom; most rely on the Physical Presence Test instead.