Inspired by a post at mcoscillator.com:
The Blue Line the interest rate at which all US taxes would be required just to service the debt.
The Red Line is roughly the average interest rate the US has been paying on its debt.
The Green Line is the Consumer Price Index.
It would be "bad" if the Blue and Red Lines cross.
The Red Line wants to be above the Green Line. (positive real rates)
The Blue Line drops in recessions.
FRED Graph
Graph and download economic data for Federal government current tax receipts/(Federal Debt: Total Public Debt/1000) from Q1 1947 to Q4 2025 about r...