Do self-employed Americans in Singapore pay US self-employment tax?
Generally yes, if the person has $400 or more of net self-employment earnings and no other exception applies. Singapore has no US totalization agreement. Self-employment tax is generally 15.3% of 92.35% of net earnings, with the 12.4% Social Security portion limited by the $176,100 wage base for 2025. The FEIE does not reduce net self-employment earnings.
Why the exclusion does not help
The FEIE and Foreign Tax Credit operate against income tax under their own rules. Self-employment tax is separate. A totalization agreement can assign coverage to one country's system when its requirements are met, but other statutory exceptions and entity-classification rules can also affect the result.
Where the line runs in Asia
Japan, South Korea, and Australia have US totalization agreements in force. Singapore, Hong Kong, China, Thailand, India, the Philippines, Vietnam, and Malaysia do not. The absence of an agreement does not establish the amount of local social contributions, and US self-employment tax still depends on federal classification and other applicable exceptions. A Schedule SE filing trigger generally applies at $400 or more of net self-employment earnings.
Employees are different: a Singapore employer's payroll does not trigger US self-employment tax.
Reference information, not legal or tax advice. Figures come from our verified fact base and are checked against superseded values on every site update.