2008

For 2008, the amount of the student loan interest deduction is phased out (gradually reduced) if your filing status is married filing jointly and your modified adjusted gross income (MAGI) is between $115,000 and $145,000. You cannot take the deduction if your MAGI is $145,000 or more.

For all other filing statuses, your student loan interest deduction is phased out if MAGI is between $55,000 and $70,000. You cannot take a deduction if your MAGI is $70,000 or more.

For more information, see chapter 4 in Publication 970, Tax Benefits for Education

2009

For 2009, the amount of the student loan interest deduction is phased out (gradually reduced) if your filing status is married filing jointly and your modified adjusted gross income (AGI) is between $120,000 and $150,000. You cannot take the deduction if your modified AGI is $150,000 or more.

For all other filing statuses, your student loan interest deduction is phased out if your modified AGI is between $60,000 and $75,000.  You cannot take a deduction if your modified AGI is $75,000 or more. For more information, see chapter 4 in Publication 970.