Historical Surge
4.35x
$223B (2015) → $970B (2025)
Annualized Growth Rate
15.52%
10-year compound trajectory
Projected 2030 Bill
$1,845.5B
Under current simulated levers
Revenue Absorption (2030)
23.4%
Portion of fed tax revenue to interest
Economic Levers
Avg Effective Interest Rate
3.8%
Weighted borrowing cost on marketable public debt.
Annual Primary Deficit
$1.80T
Excludes net interest payments before borrowing.
Baseline Fed Revenue Growth
3.5%
Projected annual federal tax receipts growth.
Historical grounding: FY2015 net interest was $223B (~1.2% GDP). By FY2025 it climbed to $970B (~3.3% GDP). Future obligations compound based on existing debt roll-over plus newly issued deficit financing.