Proof of Functional Equivalence: Central Bank Debt Currency vs. Sovereign Government Currency (Policy-Oriented Version)
Summary
- Executive Proposition
This paper demonstrates that:
A currency issued directly by the government can perform the same macroeconomic functions as central bank debt-based currency, provided that key institutional conditions are preserved.
This is not a proposal of monetary expansion, but a redefinition of issuance structure.
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- Operational Definition of Money (Policy Lens)
For policy purposes, money is not defined by its accounting classification but by its systemic role:
• Settlement finality
• Tax payment acceptability
• Unit of account
• Demand generation capacity
Any instrument fulfilling these conditions functions as base money.
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- Current Institutional Baseline
In prevailing systems, base money is issued as a central bank liability.
However, policy simulations and empirical outcomes consistently show:
• Inflation is driven by aggregate demand relative to supply
• Not by the legal issuer of the monetary base
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- Policy-Relevant Observation
Existing macro frameworks implicitly assume:
Macroeconomic outcomes = f(Money Supply, Expectations, Real Capacity)
Issuer identity is not a state variable in these models.
This implies:
The macroeconomic system is agnostic to whether money is issued by a central bank or a government, as long as operational conditions remain constant.
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- Equivalence Statement (Policy Formulation)
Define:
• System A: Central bank debt-based issuance
• System B: Direct sovereign issuance (government currency)
Under the following maintained conditions:
• Controlled issuance aligned with output capacity
• Credible commitment to price stability
• Legal tender status and tax backing
• Continuity of payment infrastructure
We obtain:
System A and System B are functionally equivalent in macroeconomic outcomes.
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- Policy Implications
6.1 Removal of Structural Constraint
The necessity of issuing money as interest-bearing public debt is not economically required.
This opens:
• Non-debt-based fiscal financing options
• Reduced reliance on bond markets for liquidity provision
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6.2 Separation of Functions
Current systems bundle:
• Money issuance
• Debt issuance
• Monetary policy
The proposed framework separates:
Money issuance ≠ Debt issuance
This increases policy flexibility without altering macro constraints.
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6.3 Continuity of Constraints
Crucially:
All existing macroeconomic constraints remain unchanged
• Inflation constraint → still binding
• Supply constraint → still binding
• Credibility constraint → still binding
This is not a relaxation of discipline, but a restructuring of the issuance mechanism.
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- Risk Assessment (Policy Perspective)
Risk 1: Inflation Mismanagement
→ Already present in current systems
→ Mitigation: rule-based issuance / institutional design
Risk 2: Credibility Loss
→ Addressed through legal frameworks and independent oversight
Risk 3: Fiscal Dominance
→ Requires separation of issuance rules from discretionary spending
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- Conclusion for Decision-Makers
This analysis establishes that:
The current reliance on central bank liabilities for money issuance is an institutional choice, not a macroeconomic necessity.
Therefore:
A transition to sovereign government-issued currency is theoretically valid, operationally feasible, and consistent with existing macroeconomic frameworks, provided that institutional discipline is preserved.
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