The Basics
- Simple definition: The amount of money the banking system creates from each unit of reserves through the process of lending and re-lending.
- Core idea: Banks create money not by printing but by lending.
- Think of it as: A ripple effect where one rupee deposited becomes many rupees in the economy.
What It Actually Means
The money multiplier equals 1 divided by the reserve requirement ratio. If banks must hold 10 percent of deposits as reserves, the multiplier is 10. A Rs. 100 deposit allows banks to lend Rs. 90, which gets deposited elsewhere, allowing further lending and ultimately creating Rs. 1,000 in total deposits. Higher reserve requirements reduce the multiplier, while lower requirements increase it. In reality, the multiplier is less than theoretical because banks hold excess reserves and the public holds cash.
Example
If the State Bank of Pakistan sets the reserve requirement at 5 percent, the multiplier is 20. A Rs. 1 billion injection of reserves could theoretically support Rs. 20 billion in new money. However, if banks hold extra reserves, the actual multiplier is smaller.
Why It Matters (2026)
Central banks monitor the multiplier to understand money supply growth. After the pandemic, excess reserves made the multiplier less relevant in some countries, but in Pakistan, it remains important for monetary policy transmission.
Don’t Confuse With
Fiscal Multiplier, because the fiscal multiplier measures the GDP impact of government spending, while the money multiplier measures deposit creation from reserves.
See also
Money Supply • Reserve Requirements • Monetary Policy • Fractional Reserve Banking • Credit Creation
Read more about this with MASEconomics:
Money Multiplier and Credit Creation: How Banks Fuel the Economy