In some cases, a U.S. individual will continue to earn U.S. Social Security credit if liable for Social Security and Medicare taxes on amounts earned while performing services as an employee in a foreign country. The IRS has issued guidance that provides that Social Security and Medicare taxes continue to apply to wages paid for services performed by a U.S. individual abroad if any of the following are true:
(1) The individual is working for a U.S. employer,
(2) The individual performs services in connection with a U.S. aircraft or vessel and the individual has (a) entered into an employment contract in the U.S. or (b) the vessel or aircraft touches down at a U.S. port while the individual is employed on it,
(3) The individual is working in a country with which the U.S. has entered a Social Security agreement providing that the foreign earned income is subject to U.S. Social Security and Medicare taxes, or