Can I enter an old 1098 form that was forgotten from last year?

[jerry2000 · Accepted solution]

You can not enter that on your 2019 tax return, no. It can only be claimed on an original or amended 2018 tax return.

[LinaJ2018]

No, you cannot add the old Form 1098 in this year's taxes. You would need to amend your 2015 tax return.