There's a key deadline in April for borrowers hoping to get student loan forgiveness

The Biden administration has set a key deadline for student loan borrowers hoping to get forgiveness.

Those with multiple federal student loans who request a consolidation by April 30 — which will leave them with one, larger loan — could benefit from the U.S. Department of Education's overhaul of income-driven repayment plans.

Those changes have already led to debt cancelation for more than 930,000 people and $45 billion in relief.

"The opportunity to consolidate loans will help many more borrowers to qualify for student loan forgiveness," said higher education expert Mark Kantrowitz.

Here's what to know about the deadline.

Income-driven repayment plans, which date to 1994, set borrowers' monthly payments based on a share of their discretionary income. Those payments are typically lower than under standard repayment, and can be zero under some plans.

Borrowers typically get any remaining debt forgiven after 10, 20 or 25 years, depending on the plan.

One complicating factor for borrowers in these programs is that they often have multiple loans, taken out at different times, Kantrowitz said.

"They get at least one new loan each year in school, on average," he said.

That can mean a borrower has multiple timelines to forgiveness, one for each of those loans.

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Now, the Biden administration is temporarily offering borrowers the chance to combine their loans and to get credit going back as far as their first loan payment on the oldest of their original loans in that bundle.

For example, say a borrower graduated from college in 2004, took out more loans for a graduate degree in 2018 and is now in repayment under an income-driven plan with a 20-year timeline to forgiveness. Consolidating could lead them to immediately qualify for forgiveness on all of those loans, experts say.

In normal times, consolidating your student loans can be a terrible move for those hoping to get rid of their debt as your forgiveness timeline is restarted. But the Biden administration has changed that program detail through April 30.

All federal student loans are eligible for consolidation, including Federal Family Education Loans, Parent Plus loans and Perkins Loans, Kantrowitz said.

You can apply for a Direct Consolidation Loan at StudentAid.gov or with your loan servicer.

"So long as the application is submitted by April 30, they should be fine, even if the servicers takes longer to process it," Kantrowitz said.

Some borrowers who took out small amounts may even be eligible for cancelation after as few as 10 years' worth of payments, if they enroll in the new income-driven repayment option, known as the SAVE plan.

Consolidating your loans shouldn't increase your monthly payment, since your bill under an income-driven repayment plan is based on your earnings and not your total debt, Kantrowitz said.

Your new interest rate will be a weighted average of the rates across your loans.

Before consolidating, it may be a good idea to get a complete payment history of each loan, so that you can later make sure you're getting the full credit you're entitled to, said Elaine Rubin, director of corporate communications at Edvisors, which helps students navigate college costs and borrowing.

You should be able to get a history of your payments at StudentAid.gov by looking into your loan details. You can also ask your servicer for a complete record.

The payment history counts when your loans first entered repayment, not when the loan was borrowed, Rubin said.

If a borrower believes there is an issue with their payment count, they can talk to their loan servicer or submit a complaint with the Department of Education's Federal Student Aid unit, she added.