If your return has been submitted, you should wait to determine
if it has been rejected or accepted.
If rejected, you can go back and change or adjust your return to
include your student loan interest..
If accepted by the IRS,
you should wait until you receive your
refund or paid your balance due to amend the return.
When you amend, if the result does not make a difference, you
can disregard it.
If the result does change, print and mail the amendment and include your student loan
interest statement (it cannot be e-filed) and allow about 16 weeks for
processing.
See
How Do I
Amend a Return Already Filed?
