TN 4 (07-96)
GN 01707.015 Voluntary Coverage Under the German System
Persons who are not subject to compulsory contributions and who meet certain qualifying conditions may make voluntary Social Security contributions to build future benefit rights. As a general rule, a person must be a German citizen or resident to be permitted to make voluntary contributions.
Rights of certain U.S. nationals and residents to make voluntary contributions under the agreement, GN 01707.135 - GN 01707.136.