Fiscal Dominance Meter
Definition
A proprietary composite indicator measuring the degree to which government debt service obligations constrain monetary policy independence. Computed as Federal Interest Expense as a percentage of Tax Revenue, normalised by a 25-year rolling Z-score. Values above +1.5σ indicate the central bank is entering a fiscal dominance regime where raising rates materially worsens fiscal sustainability.
Formula / Calculation
FDM = (Interest Expense / Tax Revenue) × 100 Z-Score = (FDM − μ₂₅ᵧ) / σ₂₅ᵧ
Why It Matters
In Q4 2023, the US Fiscal Dominance Meter hit +1.8σ — the highest reading in 40 years, comparable only to the WWII-era Treasury-Fed Accord period. This is the primary structural reason why the Fed cannot sustain 5%+ rates for a prolonged period.
Related Metrics & Intelligence
This metric has a detailed methodology article covering its formula, data sources, and institutional use cases.
Read Full MethodologyRelated Concepts
Sovereign Rollover Risk
The risk that a government cannot refinance its maturing debt obligations at affordable interest rates. Risk peaks when a large portion of outstanding debt is short-duration (bills), forcing frequent refinancing at prevailing market rates. The US faces a structural rollover challenge: approximately $9.2 trillion of debt matures within 12 months (as of 2024), representing ~33% of the total $34T debt stock.Term Premium
The excess yield that investors demand to hold a long-duration bond instead of rolling a series of short-term instruments. It compensates for duration risk (price sensitivity to rate changes), inflation uncertainty, and fiscal supply risk. The ACM Term Premium Model (NY Fed) estimates this component separately from the expected short rate path over the bond's life.Fiscal Dominance
A regime in which a government's debt burden is so large that monetary policy becomes subservient to fiscal needs — effectively forcing the central bank to keep rates low or monetise debt to prevent insolvency. Named by economist Thomas Sargent in 1981. Unlike monetary dominance (where the central bank controls inflation independently), fiscal dominance constrains the central bank's ability to raise rates even when inflation is elevated, because higher rates worsen debt sustainability.Track Fiscal Dominance Meter live
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