Purchase power can play an important role in national and local policymaking.

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Purchasing power refers to how much you can buy with a unit of currency, such as a dollar. If your purchasing power drops, your money may become less valuable or useful over time. Inflation impacts purchasing power, but changing wages can also impact your finances. Visit Insider's Investing Reference library for more stories.

If you find a $100 bill that was printed 20 years ago, it will...

Continue Reading Purchase power is a measure of what your money can buy - here's how it can impact your finances