Interactive Sovereign Debt Compounding & Stabilization Workbench
r - g Spread: +0.3% (Snowball Active)
Fiscal Scenarios & Levers
3.2%
4.1%
3.8%
100.5%
30-Year Debt-to-GDP Trajectory & Burden
Year 30 Debt / GDP
168.4%
Stabilizing Primary Bal.
+0.3%
Net Interest Burden Y30
38.2% of Rev
r - g Differential
+0.30%
Macroeconomic Insight: When effective interest rates exceed growth (r > g), debt snowballs endogenously. As William A. Galston notes in the WSJ, short-term Treasury duration tinkering and growth optimism alone cannot arrest compounding without closing the structural primary deficit.