What Inflation Is

The U.S. Securities and Exchange Commission’s Investor.gov site defines inflation in one plain sentence: it is a general upward movement of prices. That is a description of the price level as a whole, not of one store’s sandwich special or one week’s sale.

When the general level of prices rises, the same number of dollars buys less. Investor.gov calls that a loss of purchasing power. The comic’s $5 and $6 tags are teaching numbers, like the $10/$11 bid and ask, not a quote from a real menu.

Purchasing power is why inflation shows up in a risk chapter at all. Investor.gov says inflation risk matters especially for people who receive a fixed rate of interest. The dollar amount of the interest can stay the same while the grocery cart it used to fill shrinks.

The same page says the principal concern for people holding cash equivalents is that inflation will erode returns. Cash equivalents are things meant to stay near a stable dollar value. Stability in dollars is not the same as stability in what those dollars can buy.

Inflation is not the same as the other risks on that list. Business risk is about a company staying solvent. Volatility is about a price bouncing around. Liquidity is about finding a buyer or seller. Inflation can be present even when none of those other problems are.

A rise in one price is not automatically inflation. Investor.gov’s wording is “general” upward movement. One sandwich can get more expensive because of a local bakery. Inflation is the idea that prices across many goods and services are moving up together.

This strip is a definition, not a forecast and not advice. It does not say what inflation is doing this month, what to buy, or where to put cash. The wrapper does not guarantee a return.