What is Modern Monetary Theory (MMT)?

Modern Monetary Theory (MMT) is a macroeconomic framework that describes how money actually works in countries that issue their own sovereign currencies, like the United States, Japan, the UK, and Australia.

MMT is not a policy proposal - it's a description of how the monetary system operates. Its key insights include: (1) A government that issues its own currency can never run out of money or be forced to default on debts in that currency. (2) The real constraints on government spending are not financial but are found in real resources - workers, materials, productive capacity. (3) Taxes don't fund federal spending; they serve other purposes like creating demand for the currency and managing inflation. (4) The national debt represents private sector savings, not a burden to be repaid.

MMT was developed by economists including Warren Mosler, L. Randall Wray, Stephanie Kelton, Bill Mitchell, and Pavlina Tcherneva, building on earlier work by Abba Lerner, Hyman Minsky, and Wynne Godley. It draws on the chartalist tradition, which emphasizes that money derives its value from the state's power to tax.

Understanding MMT can change how we think about what's possible - not 'can we afford it?' but 'do we have the real resources to do it?'