Student-loan borrowers thought they had 90 days to find a new repayment plan. That timeline is shifting.

President Donald Trump's administration is requiring student-loan borrowers to transition off the SAVE repayment plan.

Win McNamee/Getty Images Student-loan borrowers are receiving 30-day "final notices" to transition to a new repayment plan.

New research said that borrowers who do not switch to an income-based plan could face "much higher" payments.

The higher bills put borrowers at risk of default.

The deadline for student-loan borrowers to pick a new repayment plan keeps shifting — with higher payments looming .

September 29 was the initial deadline for the earliest wave of borrowers on the SAVE income-driven repayment plan to pick a new plan.

If they didn't, they would be automatically placed on a standard plan with the highest payments.

Now, borrowers have told Business Insider that as their deadline approached at the end of September, they received a 30-day "final notice" to select a new plan, which extended their deadline by one month.

Over the past couple of weeks, more borrowers reported receiving that notice ahead of their initial deadline.

Over 7 million borrowers were enrolled in the Biden-era SAVE plan, which allowed for cheaper payments and a shorter timeline to debt relief.

The Trump administration eliminated the plan and began sending notices to borrowers on July 1 informing them of their 90-day timeframe to switch.

New research from the JPMorgan Chase Institute showed what's at stake for borrowers if they do not select a new income-driven repayment plan.

According to the research, SAVE borrowers placed on a standard plan would face "much higher" payment burdens , rising from around 3% of their take-home income to roughly 12%.

The research also said that, given that SAVE borrowers have been in forbearance for over a year, transitioning them back into repayment will be challenging, and they might not be aware that payments are due.