Purchasing power is a pivotal concept when discussing deflation, and it refers to the amount of goods or services that can be purchased with a unit of currency. It's important because it tells you how much your income is really worth.
Here's how it works: if prices for goods and services decrease in an economy, the same amount of money can buy more than before. That's an increase in purchasing power. During deflation, even if your nominal earnings stay unchanged, your ability to buy more stuff with the same amount of money improves.
Think of it like this:
- If a basket of groceries costs $50 and then prices drop so that the same basket costs $40, with the same income, you can purchase more.
- This makes the money you have more valuable in practical terms.
In summary, purchasing power rises during deflation, contributing to an improvement in real income without a change in nominal earnings.