Can I use the 'Self-employment earnings (loss)' on Line 14 (A) of the 1065 K-1 as cashflow?
Wouldn't that be great!?! However, if you do, you are likely double-counting income/cashflow.
Find the 1065 K-1 in my Partnership/Corporation Tax Returns manual. If you do not have my manual, go to IRS.gov and download the PDF for Form 1065 K-1.
The taxpayer has to pay SE tax (Social Security) on the combination of his share of taxable (ordinary) income and the guaranteed payments he received.
The Self-employment figure is there so that the 1040 preparer can put the correct number on the 1040 SE and the taxpayer can pay the correct amount into Social Security. One way to double-check this is to look at the 1065 K-1 cheat sheet (page two of the K-1). It shows the figure on Line 14A is to be entered on the 1040 Schedule SE, Section A or B.
This calculation tells you what the LLC Member or Partner actually took in cash, not what s/he paid Social Security on. You'll show this calculation on the Partnership Tab of your Excel™ eWorksheet. (Order a current version of Linda's eWorksheet.) Link to store-eWorksheet
If you follow 1) or 2) above and also allow him credit for Line 14 Self-employment earnings you will be double-counting income.