Money Supply.
In plain English
The money supply is the total stock of money available in an economy, including physical cash and the balances in checking and savings accounts that people can spend quickly. Economists track it in measures called M1 and M2. M1 covers the most liquid money like cash and checking balances, while M2 adds small time deposits and other near-cash holdings. The Federal Reserve watches these measures because the amount of money in circulation influences inflation, interest rates, and spending.
01Why it matters
When the money supply grows much faster than the economy produces goods, it can fuel inflation, which erodes what your dollars buy.
02The math, step by step
If a central bank rapidly increases the money supply while the supply of goods stays flat, more dollars chase the same products, which can push prices up. This is one reason economists watch money-supply growth as a possible warning sign for inflation.
03What this is NOT
The money supply is not the same as national wealth. It measures spendable money in circulation, not the value of homes, stocks, businesses, and other assets people own.
04Receipts
Every figure on this page is sourced to a primary document. Tap to open the original.
Plain-English answers from our glossary. Receipts included. Never advice.
Educational tool. Answers come only from ClearMoneySchool's published glossary and are not advice. Why we never give advice