Can I claim the interest on my daughters student loan if I have made all the payments?

Yes, you can take the student loan deduction if you are the borrower or the co-signer of the loan and made the loan payments.

Please read this TurboTax article on the student loan interest deduction.

You can claim the interest deduction, if you meet these three requirements:

1. You paid the interest
2. You are legally obligated to pay it (co-signing counts)
3. The student was your dependent, at the time the loan was used to pay for qualified educational expenses