The velocity of money is a measurement of the rate at which money changes hands within an economy (Mankiw, 2024). Instead of looking at how much money exists, it looks at how many times each individual dollar is "used" to purchase final goods and services during a specific period (usually a year).
The Basic Concept
- A small economy has only $50 in cash.
- A farmer uses the $50 to buy seeds from a supplier. The supplier then uses that same $50 to buy a meal at a local restaurant. The restaurant owner then uses the same $50 to pay a local mechanic.
- Even though only $50 exists, that same $50 was used for $150 worth of purchases.
- The money changed hands 3 times, so the velocity of money is 3.
In simple terms, the velocity of money measures how many times money is used to buy goods and services during a certain period.
In macroeconomics, velocity (V) is calculated using the Equation of Exchange:
Where:
- V: Velocity of money.
- P: The price level of goods and services.
- Q: The quantity of goods and services (together, P x Q represents the Nominal GDP).
- M: The total money supply (the amount of money in circulation).
Velocity is a key indicator of economic health and inflationary pressure:
- High Velocity: Usually indicates a bustling economy where consumers and businesses are spending money quickly. This often happens when confidence is high or, conversely, when inflation is so high that people want to get rid of cash before it loses value.
- Low Velocity: Suggests that people and businesses are "hoarding" cash or saving rather than spending. This often happens during a recession or a period of economic uncertainty. Even if a central bank prints a massive amount of money (M), the economy may still stagnate if the velocity (V) drops significantly.
Mankiw, N. G. (2024). Principles of Economics. Cengage Learning.
Need More Help?
Want additional support? Sign up for our group sessions. Take a look at the full workshop schedule. For help signing up and accessing the Academic Support Center, see the How to Book ASC Sessions Page.