Impacts from filing taxes using a single Form 8824 WITHOUT including supporting detailed worksheet when performing a 1031 Exchange from 1 to 2+ properties

[jamie-m-todd]

I'd like to get input from multiple tax experts/CPAs as well as other community members.

When performing a 1031 Exchange from 1 relinquished property to 2 or more replacement properties you need to determine the proportioning out the Exchange Basis from the relinquished property across the replacement properties.  In TurboTax Premier, there is not a worksheet to perform this calculation.  Instead, I chose to use Excel.  Unfortunately, it does not seem like you can upload a document into the TurboTax Premier application.  Therefore, if I want to "show the math" in how I calculated the Exchange Basis and Excess Basis for each of the replacement properties, I have to file paper based (by mail) instead of Efile.  

Has anyone been successful providing a single Form 8824 the summarizes the numbers across the replacement properties WITHOUT attaching any type of support document that "shows the math"?  Does this present any type of red flag to the IRS?  I really don't want to have to file by paper/mail.

Thanks!

[RobertB4444]

The transfer of basis should be done proportionately.  You shouldn't have to 'show your work'.  

When you file the 8824 if the IRS has questions they would send you a letter.  But the total basis should transfer and their should be an increase in basis based on fair market value.  All of that should be fairly obvious from the totals.  You should save your worksheets in the unlikely event that you are audited but it should not be anything that requires you mail in worksheets to the IRS. They would be unlikely to pay attention to them anyway.

@jamie-m-todd