Under the agreement, individuals who are self-employed are generally subject only to the social security taxation and coverage laws of the country in which their work is performed. However, an exception is provided if a person transfers self-employment activity from one country to the other for five years or less. In that case, the self-employment remains subject to the social security laws of the country from which the activity was transferred, and is exempt from social security coverage and taxation requirements of the other country.

A self-employed U.S. citizen, who is subject only to Czech law under the agreement and is exempt from paying Social Security self-employment tax, must still file a U.S. tax return every year. When preparing the income tax return, the worker should show that the earnings are exempt under the agreement and attach a photocopy of the certificate of coverage issued by the Czech authorities as proof of the exemption.

RS 02002.190, Certificates of Coverage under the Agreement with the Czech Republic