How do I allocate personal expenses from multiple LLCs?

[Drew Whitson]

I hold various amounts of ownership in four LLC's each which hold multiple real estate assets. One is 100% ownership, then 50%, 1/3rd, and 1/8th - as each deal comes along it gets put into one of these LLCs depending on the investment group. My question is around what is the best way to allocate personal expenses which occur in the LLC's I do not own 100%.

For example, when I flew from MSP to SEA to look at several deals I closed on with my business partner in my 50% LLC, I incurred deductible airline expense. My business partner lives in SEA should not have to share this expense equally. Historically I have just pushed these types of expenses into my 100% LLC.

Is there a better/correct way to do this? I was considering the idea of keeping any expenses incurred (travel, miles driven, even a % of my home office deduction) out of all of the LLCs and reflecting these in my tax return under a real estate sole proprietorship business with no rent/income (the expenses for the 100% ownership LLC would of course still be reflected in that return).

Doing this would create a more profitable return for the 100% LLC which would provide a higher DSCR to comply with my lenders requirements; however, the net impact to the IRS would still be the same on the final 1040.