Thomas Piketty’s observation (r > g) identified the fundamental flaw in modern capitalism: capital outpaces the real economy, leading to the inevitable marginalization of labor. This paper proposes a structural remedy: the Excess Wealth Growth Tax (EWGT). Unlike traditional wealth taxes that penalize static capital, the EWGT is a dynamic synchronization tool. It targets only the growth differential between individual wealth and national GDP, protects the principal (W_0), and incorporates a Cumulative Offset Mechanism to prevent double taxation. By exempting the ultra-wealthy from traditional inheritance taxes in exchange for this growth-based synchronization, the model restores the value of labor and incentivizes productive investment over passive rent-seeking.