100 per cent gold backing is a monetary rule under which the issuer of currency holds gold reserves equal in value to the currency outstanding, at a fixed conversion price. Conceptually, it is the strictest form of a gold-backed system: every unit of base money is fully backed by gold.
How The Rule Works
Let:
G= quantity of gold reserves held by the issuerP_g= fixed currency price of gold (the conversion parity)C= currency (or base money) issued
A simple backing constraint is:
\[ C \le P_g \cdot G \]
If gold reserves fall (for example due to redemptions or external outflows), the issuer must either contract C or abandon/adjust the conversion parity.
Economic Implications
Limited monetary policy flexibility
Because the monetary base is tied to gold reserves, the system limits the ability to expand the money supply in response to banking panics, recessions, or rapid changes in money demand.
Deflation risk
If money supply cannot grow in line with real output and money demand, the price level can fall (deflation). Deflation raises the real burden of nominal debts and can worsen downturns.
Credibility and convertibility pressure
A promise of convertibility can anchor expectations, but it also creates vulnerability to runs on gold reserves if people doubt the peg.
Related Terms
- Gold Standard
- Fiat Money
- Fractional Reserve Banking
- Central Bank
- Monetary Base
- Money Supply
- Inflation
- Deflation