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Can somebody explain what this means exactly? Why do they need to pay it back? If they pay it back, then what will happen? I'm from a developing country. My c

Can somebody explain what this means exactly? Why do they need to pay it back? If they pay it back, then what will happen? I'm from a developing country. My country is objectively much worse than US in every aspect. My country doesn't export anything significant. There's no innovation. insane level of corruption. Yet we don't have this issue. Nobody screams that the country will collapse. Is this kind of doomsday thinking an American-only culture?

matteoraso 29d ago
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.
- otterley 29d ago
  It's not just an idea; it's in our Constitution! Fourteenth Amendment, section 4: "The validity of the public debt of the United States...shall not be questioned."
  - milkytron 29d ago
    This seems to be in contradiction with the first amendment
    - otterley 29d ago
      That's not what "shall not be questioned" means. It's a term of art meaning that the Government cannot refuse to pay valid claims on its debt.
      - milkytron 29d ago
        Ah, that makes sense
      - nly 29d ago
        As long as the debt is in its own currency printing to repay is always an option.
    - OJFord 29d ago
      Read it not as 'may not be', but 'nothing shall be done that should give cause to'.
Camus134 29d ago
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.
- tadfisher 29d ago
  The question is, are we going to have another Volcker willing to raise the prime rate to 20% to counteract our useless legislative branch? Or is the idea of an independent central bank dead at this point?
  - rubyn00bie 29d ago
    I don’t think raising rates like “Tall Paul” (Volcker) did would help in this situation. We are in a bit of a pickle. Raising rates would cause the servicing costs to become enormous and would likely just result in even more debt. The alternative, lowering rates, would likely cause a massive spike in inflation. Inflation makes the debt easier to manage because it’s worth less, but then that wreaks havoc on everyone (especially folks on fixed income). I think the only way out is to reduce military spending, nationalize the health care system, and tax the hell outta the ultra wealthy. But I suspect that won’t happen at least based on the current oligarchy running the country. It’s really unfortunate too, because we could be taking on debt to invest in citizens like making college free, improving teacher salaries, and general infrastructure but… we ain’t.
toomuchtodo 29d ago
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-long-dated-treasuries/ https://think.ing.com/snaps/us-treasury-ups-its-buying-of-lo... https://think.ing.com/articles/rates-spark-what-the-is-going-on/ 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-fed-treasury-policy https://www.axios.com/2026/08/20/bonds-treasury-foreign-hedge-fund https://www.axios.com/2026/08/20/bonds-treasury-foreign-hedg... https://www.axios.com/2026/08/19/rates-treasury-borrowing-bessent 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/2026/08/17/treasury-yields-warsh-bonds https://www.axios.com/2026/07/30/warsh-fed-inflation-bonds https://www.axios.com/2026/07/30/warsh-fed-inflation-bonds https://www.youtube.com/watch?v=yh18YXKMk3g https://www.youtube.com/watch?v=yh18YXKMk3g
- toomuchtodo 28d ago
  Additional citation: Axios: Here's how America's $40 trillion debt can hit your wallet - https://www.axios.com/2026/08/20/us-40-trillion-dollars-national-debt-costs-interests https://www.axios.com/2026/08/20/us-40-trillion-dollars-nati... - August 20th, 2026 America Is About to Get More Expensive - https://news.ycombinator.com/item?id=49388369 https://news.ycombinator.com/item?id=49388369 - August 2026
freefolks 29d ago
US Debt is not the same as personal debt. US Treasuries are the same as cash so it is just a measure of how much USD are in the global economy. So long as the "debt" can be serviced there is no issue.
gonzalohm 29d ago
Probably your country doesn't get good deals on money loans and hence it doesn't borrow more than it can pay. The US on the other hand keeps borrowing and borrowing
- zshrdlu 28d ago
  Not at all true for most developing countries, they borrow despite the high interest. It just means that the burden of interest payments squeeze out welfare programs, development programs, etc. Usually the IMF/World Bank step in to influence austerity measures, fiscal and monetary policy for further loans to be disbursed.
NewJazz 29d ago
Have you ever considered that part of the reason your country is like that is because of the government's poor fiscal position? If the US stops spending on science because they have to service debt, innovation might evaporate.
- ergocoder 29d ago
  I am sure my country's economy sucks. But then nobody really screams apocalypse. But, in US, people are so alarmed about US' economy collapsing.
  - disgruntledphd2 29d ago
    > But, in US, people are so alarmed about US' economy collapsing. It's more than US Treasuries (debt) are the safe asset upon which all other assets are priced. If they go mental, then lots of assumptions break and the machines will create a financial crisis for us (humans too, but the machines will start it).

matteoraso 29d ago

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.

otterley 29d ago
It's not just an idea; it's in our Constitution! Fourteenth Amendment, section 4: "The validity of the public debt of the United States...shall not be questioned."
- milkytron 29d ago
  This seems to be in contradiction with the first amendment
  - otterley 29d ago
    That's not what "shall not be questioned" means. It's a term of art meaning that the Government cannot refuse to pay valid claims on its debt.
    - milkytron 29d ago
      Ah, that makes sense
    - nly 29d ago
      As long as the debt is in its own currency printing to repay is always an option.
  - OJFord 29d ago
    Read it not as 'may not be', but 'nothing shall be done that should give cause to'.

Camus134 29d ago

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.

tadfisher 29d ago
The question is, are we going to have another Volcker willing to raise the prime rate to 20% to counteract our useless legislative branch? Or is the idea of an independent central bank dead at this point?
- rubyn00bie 29d ago
  I don’t think raising rates like “Tall Paul” (Volcker) did would help in this situation. We are in a bit of a pickle. Raising rates would cause the servicing costs to become enormous and would likely just result in even more debt. The alternative, lowering rates, would likely cause a massive spike in inflation. Inflation makes the debt easier to manage because it’s worth less, but then that wreaks havoc on everyone (especially folks on fixed income). I think the only way out is to reduce military spending, nationalize the health care system, and tax the hell outta the ultra wealthy. But I suspect that won’t happen at least based on the current oligarchy running the country. It’s really unfortunate too, because we could be taking on debt to invest in citizens like making college free, improving teacher salaries, and general infrastructure but… we ain’t.

toomuchtodo 29d ago

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-long-dated-treasuries/ https://think.ing.com/snaps/us-treasury-ups-its-buying-of-lo... https://think.ing.com/articles/rates-spark-what-the-is-going-on/ 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-fed-treasury-policy https://www.axios.com/2026/08/20/bonds-treasury-foreign-hedge-fund https://www.axios.com/2026/08/20/bonds-treasury-foreign-hedg... https://www.axios.com/2026/08/19/rates-treasury-borrowing-bessent 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/2026/08/17/treasury-yields-warsh-bonds https://www.axios.com/2026/07/30/warsh-fed-inflation-bonds https://www.axios.com/2026/07/30/warsh-fed-inflation-bonds https://www.youtube.com/watch?v=yh18YXKMk3g https://www.youtube.com/watch?v=yh18YXKMk3g

toomuchtodo 28d ago
Additional citation: Axios: Here's how America's $40 trillion debt can hit your wallet - https://www.axios.com/2026/08/20/us-40-trillion-dollars-national-debt-costs-interests https://www.axios.com/2026/08/20/us-40-trillion-dollars-nati... - August 20th, 2026 America Is About to Get More Expensive - https://news.ycombinator.com/item?id=49388369 https://news.ycombinator.com/item?id=49388369 - August 2026

freefolks 29d ago

US Debt is not the same as personal debt. US Treasuries are the same as cash so it is just a measure of how much USD are in the global economy. So long as the "debt" can be serviced there is no issue.

gonzalohm 29d ago

Probably your country doesn't get good deals on money loans and hence it doesn't borrow more than it can pay. The US on the other hand keeps borrowing and borrowing

zshrdlu 28d ago
Not at all true for most developing countries, they borrow despite the high interest. It just means that the burden of interest payments squeeze out welfare programs, development programs, etc. Usually the IMF/World Bank step in to influence austerity measures, fiscal and monetary policy for further loans to be disbursed.

NewJazz 29d ago

Have you ever considered that part of the reason your country is like that is because of the government's poor fiscal position? If the US stops spending on science because they have to service debt, innovation might evaporate.

ergocoder 29d ago
I am sure my country's economy sucks. But then nobody really screams apocalypse. But, in US, people are so alarmed about US' economy collapsing.
- disgruntledphd2 29d ago
  > But, in US, people are so alarmed about US' economy collapsing. It's more than US Treasuries (debt) are the safe asset upon which all other assets are priced. If they go mental, then lots of assumptions break and the machines will create a financial crisis for us (humans too, but the machines will start it).