Not all federal loans allow income-based repayment. For instance, parent PLUS loans aren't eligible, nor are other loans made to or through parents. Moreover, t

Not all federal loans allow income-based repayment. For instance, parent PLUS loans aren't eligible, nor are other loans made to or through parents. Moreover, there are tons & tons of private loans (often with high interest rates) pushed at these places, and none of those need to offer income-based repayment.