You have several options for repayment and each is designed with different needs in mind:
Standard Repayment Plan
Graduated Repayment Plan
Extended Repayment Plan
Revised Pay As You Earn Repayment Plan (REPAYE)
Pay As You Earn Repayment Plan (PAYE)
Income-Based Repayment Plan (IBR)
Income-Contingent Repayment Plan (ICR)
Income-Sensitive Repayment Plan
Get the Specifics for All Federal Repayment Plans