IBR (income based repayment) applications are now available from many major lenders, including the US Department of Education! The
IBRinfo.org FAQ is a great place to get an overview of the new payment plan. You will need to contact your lender directly to apply for IBR. If you have Direct Loans through the US Department of Education,
you can start here. If you're not sure who is servicing your federal loans these days, check the
National Student Loan Data Center.