If you are self-employed you report your self-employment on Form 1040 Schedule C regardless of where you perform your self-employment work. Turbotax will calculate any self-employment tax you may owe based on your Schedule C entries.
Once you have completed Schedule C and know your net income you will report that income on Form 2555. If you qualify for the Foreign Earned Income Exclusion (FEIE) your self-employment will not be taxed. Your income may be excluded from income tax but you will still have to pay any self-employment tax to exclude the income if you qualify.
