United States - Contributions for government social insurance: Employee and self-employed contributions: Federal social insurance funds: Railroad retirement was 1.80400 Bil. of $ in January of 2022, according to the United States Federal Reserve. Historically, United States - Contributions for government social insurance: Employee and self-employed contributions: Federal social insurance funds: Railroad retirement reached a record high of 1.95700 in January of 2015 and a record low of 0.05400 in January of 1938. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Contributions for government social insurance: Employee and self-employed contributions: Federal social insurance funds: Railroad retirement - last updated from the United States Federal Reserve on April of 2024.