US debt tops $40T as Treasury doubles bond buybacks to calm markets

The world economy is based on the idea that America will always repay its debt. Them not paying it back will be the financial equivilent of a nuclear bomb, not just for them, but for literally everybody.

Others have spoken to why US treasuries were considered a risk free asset, what is important now is that the US Treasury's market participation has been to attempt to keep borrowing costs lower without paying down the debt (US-Japan currency bailout, treasury bond buyback). The bond market is rejecting the theatrics. Fiscal policy can change (spend less, stop issuing new debt, start paying down existing debt), or yields will continue to rise, causing a potential debt spiral (as the US will be forced to issue new debt and refinance existing debt at ever increasing interest rates). Imagine your credit card interest rate keeps increasing, while you carry a balance the size of your annual income, you keep charging on the card, and the limit is unknown.

This will flow into consumer debt markets, pushing up borrowing costs for everyone (auto loans, credit cards, mortgages, etc), as all consumer debt is priced off of "risk free" US treasury yields. This could slow the US economy further, and the economy is already at stall speed without AI investment.

https://think.ing.com/snaps/us-treasury-ups-its-buying-of-lo...

https://think.ing.com/articles/rates-spark-what-the-is-going...

https://www.axios.com/2026/08/20/bonds-fed-treasury-policy

https://www.axios.com/2026/08/20/bonds-treasury-foreign-hedg...

https://www.axios.com/2026/08/19/rates-treasury-borrowing-be...

https://www.axios.com/2026/08/17/treasury-yields-warsh-bonds

https://www.axios.com/2026/07/30/warsh-fed-inflation-bonds

https://www.youtube.com/watch?v=yh18YXKMk3g

For decades, the U.S government has been spending much more than it takes in from taxes. To make up for the shortfall, it uses debt in the form of U.S. treasury bonds. They currently pay about 5% a year.

They have long been considered risk free. Boring, safe, low return investments. Companies or people who need absolutely reliability in their investments buy them - the elderly, pensions, insurance companies, banks the world over.

The U.S. has issued so many of these bonds that the total amount outstanding right now is $40T. This amount is so staggering that to simply pay that 5% in interest payments costs us more than it takes to fund our very large, expensive military.

If they don't pay it back, and declare all those bonds worthless - well all of those people who were relying on what they thought was a rock solid, safe investment go bust. Banks fail worldwide, pensions run dry, retirement funds suddenly are empty, all kinds of businesses collapse. It would make the financial crisis of 08 look like a joke, and it would be a true catastrophe.

That is almost surely not going to happen.

What could happen is that we enter a debt spiral - investors get worried we won't be able to pay it back, and view bonds as less than perfectly safe. They now want 6%. The U.S. has to pay even more in interest every year, so they issue more debt to roll it over, which makes it worse and we get to 7%, etc.

Typically in this situation, a country either quickly gets its act together and commits to reducing spending and raises taxes, or they just turn on the money printers, and use inflation to make that debt smaller in real terms. I have little faith in the U.S. to commit to fiscal austerity and expect them to try to inflate the debt away.

> I guess they think they can hold out long enough to blame it on the other party?

Blaming the democrats for republican deficits has worked for the past 40 years, why stop now?

That would have been the fix a decade ago, the debt is too high now and the economy too weak.

Both of which can trigger recessions.

If you have to ask, you’re too poor or powerless to properly profit.

The best way to derisk would be to get out of the US and surrender your citizenship. But the alternatives may not be all that much better (France has marginally lower debt to gdp, japan has much higher, to give two examples).

Go ask a (capable, preferably open) LLM. If it doesn’t give you a direct answer it will give you enough of a starting point to start asking more questions.

(This is not financial advice)

GenX/Millennial retirement communities abroad. There won’t be any SS funds left for that generation so they won’t be able to retire in the US.

In all seriousness - this level of debt will probably require somewhat high rates of inflation to reduce. I'd expect the inflation baseline to be relatively high over the next few decades.

High inflation helps those who borrow with fixed terms. If you have a mortgage, don't pay it off. Don't pay off low interest rate debt. Consider acquiring a responsible amount of low-medium interest rate debt. Put your money into stocks and other assets that will appreciate with inflation.