Please note that only Direct Loans in IBR are eligible for PSLF. So if you have old loans in IBR they are not eligible for PSLF. To get around this do direct loan consolidation and only from the date the new consolidated loan enters IBR do you qualify for PSLF. So those that have been in IBR but the loans were not Direct Loans your clock will have to restart. If you have a mix of Direct loans and old loans consolidate only the old loans. This is because if you consolidate your Direct loans and old loans into a single Direct Consolidation Loan then you resent your 120-payment clock. When you do consolidation application you can select which loans to consolidate.
This is from PSLF site:
http://studentaid.ed.gov/repay-loans/forgiveness-cancellation/charts/public-service
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Only loans you received under the William D. Ford Federal Direct Loan (
Direct Loan) Program
are eligible for PSLF. Loans you received under the Federal Family Education Loan (FFEL) Program, the Federal Perkins Loan (Perkins Loan) Program, or any other student loan program are not eligible for PSLF.
If you have FFEL Program or Perkins Loan Program loans, you may consolidate them into a Direct Consolidation Loan to take advantage of PSLF.
However, only payments you make on the new Direct Consolidation Loan will count toward the required 120 qualifying payments for PSLF. Payments made on your FFEL Program or Perkins Loan Program loans before you consolidated them,
even if they were made under a qualifying repayment plan,
do not count as qualifying PSLF payments. In addition, if you made qualifying payments on a Direct Loan and then consolidate it into a Direct Consolidation Loan, you must make 120 qualifying payments on the Direct Consolidation Loan.
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