How does MMT apply to other countries besides the US?

MMT applies most directly to countries that issue their own sovereign currency with floating exchange rates and no significant foreign-currency debt. This includes the United States, Japan, UK, Canada, Australia, and others.

For these countries, the core MMT insights hold: they cannot run out of their own currency, the real constraints are resources and inflation, and taxes don't fund spending in an operational sense.

However, many countries face additional constraints:

- Countries using someone else's currency (like Eurozone members using the euro) are currency users, not issuers. Greece cannot create euros, so it faces real financial constraints like a household.

- Countries with significant foreign-currency debt must earn or borrow foreign currency to pay it back. Argentina borrowing in dollars faces constraints the US doesn't face.

- Countries highly dependent on imports may face exchange rate pressures if they spend heavily. If spending pulls in lots of imports, the currency may depreciate, making imports more expensive.

- Developing countries often face supply constraints - limited infrastructure, education, and productive capacity - that limit how much spending can translate into real output rather than inflation.

Fadhel Kaboub and others have extended MMT analysis to developing countries, emphasizing that these nations need to build productive capacity and reduce import dependency, not just spend more.