I forgot to add my 1098-e information for federal loan interest i paid

You will need to amend your return, if your return has already been submitted and accepted by the IRS.  If you have not submitted yet, then just add that information in and complete filing.  Hope this helps.......

The 1040X for amending 2015 returns will not be available until mid-February.  You should not try to amend your return until it has been fully processed and you have received your refund or your payment has cleared.

Amended returns do not “catch up” to your original return and replace them;  they are processed as two separate returns.  

Amended returns have to be printed and filed by mail.   It will guide you thru the process if you need to amend the form.  It can take the IRS up to 12 weeks or longer to process them.   If you are due a larger refund than on your original return, your amended return should only show the difference and you will receive a separate check for it.  If you owe money on your amended return, it will show only the new amount owed, you will have to mail a check with the return.

Let me know if you have further questions.