I knew student loans are a thing in the US, I was not aware there's the same structure in the UK!
How the student loan work then there? can people just leave the debt there as it is forever? I'm ignorant on this, so I'd like to know more.
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The important differences are that a) Student loan payments are only deducted after a certain salary threshold and b) The debt is written off after period of ~20-30 years (depending on when the loan was issued).
So, UK student loans behave much differently to conventional loans. They operate more like a "graduate tax". The terms of the loan mean that there's little incentive for paying them back early, and the vast majority of holders will not be paying the full amount back before they are written off completely. As of now, graduates in the UK owe around £220B of student debt.
While the US system is predatory, I believe it to be at least fairer than the UK's system where the general public will be left to pick up the tab.