This is for partnerships with Line 13K excess business interest expense.  In past years I created Form 8990 - Schedule A on an Additional Information Form and plugged in the numbers.  You could make a pdf in Excel and attach it to the tax return.  This year one of the partnerships showed excess taxable income, but no excess business interest expense.  Last year this partnership had EBIE but no ETI. The ETI was greater than the carryover EBTE, so I deducted the carryover expense this year.  I put this on line 1 of the K-1 input sheet so it would transfer to Schedule E Page 2.   Example, this K-1 - Line 1 showed 4,000 ordinary business income and the EBIE was 1,500.  In the box on Line 1 I put Per K-1 Income 4,000 less excess business interest expense 1,500 - it netted to 2,500 on Line 1 and carried to Sch. E.  We'll see.