@marburgert , are you not taking advantage of Foreign Earned Income Exclusion -- therefore no US income? Or you saying that your Schedule -C income is resulting in SECA taxes on Schedule-SE ?
Since there is a "Totalization Agreement" between the US-SSA and Germany , you need to pay SECA equivalent to only one country. See this from US-SSA --> Totalization Agreement with Germany | International Programs | SSA.
Is there more I can do for you ?
