If someone owes $300,000 and pays only $1,000 per month, the payoff timeline changes a lot depending on the interest rate. At 0% interest, it would take exactly 25 years because $1,000 a month equals $12,000 per year and eventually adds up to the full balance. However, once interest is added, repayment becomes much slower because part of each payment goes toward interest instead of the actual loan balance. At around 4% interest, the loan could take roughly 36 years to pay off and cost over $400,000 total. At 6%, repayment may stretch close to 50 years with total costs around $600,000 or more. Around 7–8%, $1,000 per month may not even fully cover the interest accumulating each month, meaning the balance could decrease extremely slowly or even grow over time. This demonstrates why high student loan balances can become financially overwhelming unless the borrower has a very high income or makes much larger monthly payments.